Kvm cpu steal. Add a comment | 3 Answers Sorted by: Reset to .
Kvm cpu steal "Steal time is the amount of CPU time needed by a guest virtual machine that is not provided by the host. When is CPU steal problematic? You’ll see small amounts of steal, and less than 10% is generally KVM VCPU features are CPU features that are specific to KVM, such as paravirt features or features that enable CPU virtualization extensions. 9-rc using KDAB Codebrowser which provides IDE like features for browsing C, C++, Rust & Dart code in your browser those configures are defined by target/i386/cpu. KVM源代码分析2:虚拟机的创建与运行; qemu tcg translation block机制; KVM源代码分析5:IO虚拟化之PIO; QEMU虚拟网络E1000源代码分析 文章浏览阅读518次。背景一般我们通过 kvm guest 中的%steal 指标来看 CPU 的争抢。但是目前在Host上并没有相关的手段或者指标来监控Guest 是否发生了争抢。本文主要介绍如何在Host 判断争抢的发生，及 steal time的产生的内核代码分析。CPU Steal TimeSar manual中对 %steal 的描述如下。 はじめに. CPU steal doesn't always mean oversold hypervisors, 5985. (The sve<N> CPU features are all optional SVE vector lengths (see “SVE CPU Properties”). 6g 64. Kvm-steal-time: 从v5. Closed mberner-ch opened this issue Jun 6, 2016 · 11 comments Closed Hardware Interrupts on KVM when CPU is being capped (steal) #1391. Over the past week I noticed the load average increase significantly, and then looking at the CPU 'steal' metric, it's gone from previous weeks of only being a few percent to now in the 15-17% range and staying there. org) 针对虚拟机 kvm虚拟化 steal time 机制详解. KVM CPU share / priority / overselling. Deleted articles cannot be recovered. KVM Guest Virtual Machine Compatibility. KVM怎么选CPU Model kvm cpu型号，目录1概述2VMX2. After a virsh save + restore from file, htop reports ~100% cpu steal time (st), while top reports ~100% idle time. 何为 “Steal” CPU时间？ “Steal 时间”（也称为“偷窃”时间）仅在云环境（如AWS）或 VMWare 环境中相关，在云环境中，多个虚拟机将在一个基础物理主机上运行。 If we applied a CPU steal time-like metric to the ticketing process, it would look like this: 0% Steal Time - it's a Wednesday matinee: the ticket booth is picking a moviegoer from line 1, then line 2, then line 1, then line 2, and so on. Commented Jan 9, 2014 at 3:48. KVM的虚拟机在宿主机上的表现为宿主机系统的一个qemu-kvm进程，虚拟机以线程的方式调度到宿主机的物理cpu，那么如何计算虚拟机使用的宿主机CPU的使用情况？如何判断虚拟机调度到宿主机CPU的等待情况？ /* Steal time from the VCPU. 1 IDT3. Why it is my VM's fault? 文章浏览阅读5k次，点赞40次，收藏39次。linux内核时钟源，qemu-kvm时钟源的各自原理说明。以及我们该如何选择和设置qemu-kvm的时钟源_kvm-clock CPU steal value. qemu-kvm stuck at 100% cpu after live migration with spice,then guest time goes very fast | Red Hat Bugzilla; 压测工具. Steal time is reported in the CPU time fields in /proc/stat as st. It is automatically In one of my KVM setups I am seeing high CPU stealing for Core 0 of both the guests. 虚拟机毕竟是被虚拟出来的，虚拟机要用到 CPU，最终还是要通过宿主机的 CPU 来完成，如果宿主机的 CPU 正在为其他虚拟机服务，那么当前虚拟机就会等待，这个等待的时间就是 steal time。 CPU 跟内存不一样，内存是可以做到硬限制的，如果云厂商超卖，CPU 抢占 Glauber Costa (8): KVM-HDR Add constant to represent KVM MSRs enabled bit KVM-HDR: KVM Steal time implementation KVM-HV: KVM Steal time implementation KVM-HV: use KVM Steal time accounting KVM-GST: adjust scheduler cpu power KVM-GST: KVM Steal time registration Gleb Natapov (1): Откуда берется steal внутри виртуальных машин и что с этим делать [исправить]CPU steal time - это время, в течение которого виртуальная машина не получает ресурсы процессора для своего выполнения. lookbusy - a synthetic load generator; CPU Steal time. Are you sure you want to delete this article? Has %st (CPU Steal Time Percentage) increased on every virtual server? This means your virtual machines are using more CPU. mberner-ch opened this issue Jun 6, 2016 · 11 comments Assignees. In order to accurately measure this you'll need to make sure that both instances are consuming enough CPU time to warrant stealing. Steal time occurs when the host allocates these resources elsewhere: for example, to another guest. Symptoms. It is the time that the CPU uses to run internal virtual machine tasks, with the hypervisor allocating CPU cycles to other “external tasks” that are probably caused by one of your noisy neighbors. c in variable x86_cpu_properties. 0. What causes this error: The guest is experiencing high CPU steal time due to resource contention or misconfiguration. Applies to: Oracle Exadata Storage Server Software - Version 19. 2开始，kvm-steal-time默认被使能当KVM使能时，特性被支持，guest为64位。 当kvm-steal-time使能时，一个64位guest可以解释由于host没有调度相关的VCPU线程CPU不能运行的时间。数据可能影响guest调度器的行为并导出到guest用户空间。 4 TCG VCPU特性 Платформа работает на KVM. If it is possible i want to give 1 vm 30 % and the other one 70% of the cpu. CPU Steal time high in KVM but we don't see high CPU wait event in dom0. Netflix 很关注CPU的Steal Time。他们的策略是：如果是当前虚拟机的Steal Time 超过了你们设置的 阈值，他们会关闭这台虚拟机并且在另外一台物理机上面重启。 如果你想要部署虚拟环境（例如：Amazon EC2）， steal time就是你想要关注的性能指标之一。 如果这个指 如果在云中心，不想让客户看见st的反映值，可以用如下办法. May this be a bug in htop? Are there any fixes available, or is this simply some . CPU steal time表示虚拟CPU等待物理CPU的时间百分比，这个时间就是hypervisor服务于其他虚拟CPU的时间。 Hello, I know that Hetzner uses KVM as virtualization technology, KVM is suppused to support notifying the guest OS that the CPU is busy outside of the VM (by other VM, or host workload), this field is scalled "steal", and is displayed in top command as "st" 7. Steal time occurs when the host allocates this CPU time elsewhere, for KVM guest high CPU steal time. 2拦截3中断虚拟化3. If your CPU steal time is lower than 10%, you have nothing to worry about. How you can fix it: Ensure Steal time occurs when the host allocates these resources elsewhere: for example, to another guest. If I take average it doesn't look that bad. sarコマンドやvmstatコマンドを使用すると、「%steal」という項目が表示されます。この項目は、仮想マシンのvCPUがホストの物理CPUに割り当てられない割合を表しています。 この記事では、意図的にvCPUが物理CPUに割り当てられない状況を作り出し、「%steal」がどのように変化するかを検証 However, this thread confirms the steal field is not supported in VmWare VMs (I tested it in VMware 5. CPU Steal Time Is Relatively High. If the OS knows it is running in an VM it can do some optimizations to improve the performance. vmstat also has the same field in IF you have CPU steal, THEN you should contact your provider. 4 51w+6d kvm 2891393 root 20 CPU steal time is (according to man proc): It's a KVM host running vanilla Debian 8 (as mentioned in the question). 2% max kvm-poll-control 是 KVM 中的一种 半虚拟化 (paravirtualization) 特性，简称为 PV Feature。 该 feature 在 2019 年引入 linux, patchset 可参考：[patch 0/5] cpuidle haltpoll driver and governor (v6) - Marcelo Tosatti (kernel. Troubleshooting Steps: 1. Large amounts of steal time indicate CPU contention, which can reduce guest performance. By default, there is no restriction of CPU scheduling to all available CPU cores on a KVM host: 在Host中，用run_delay计算出Guest的steal time，并通过kvm_write_guest_cached告诉Guest（前文中Guest向Host注册的地址，Host直接修改）。 这样，在Guest恢复执行的时候，就可以知道steal time的具体大小了。 6. If you have more than one Steal time is the amount of CPU time needed by a guest virtual machine that is not provided by the host. KVM Guest Virtual Machine Compatibility; 3. CPU steal is measured in percentage – 0% being no steal, 100% being all of your cores being 100% used. "It is possible to monitor steal time in guest, in case of linux using for example using "top" utility. No one is waiting. In the Linux kernel, the following vulnerability has been resolved: x86/kvm: Teardown PV features on boot CPU as well Various PV features (Async PF, PV EOI, steal time) work through memory shared with hypervisor and when we restore from hibernation we must properly teardown all these features to make sure hypervisor doesn't write to stale I’ve noticed that CPU steal time always shows as 0% on my Hetzner server. Contribute to torvalds/linux development by creating an account on GitHub. Xenの場合は普通に %steal にカウントされる。 KVM guest high CPU steal time. VirtualBox doesn't provide CPU steal time data also. 6g 10752 S 1471 7. 0 and later Information in this document applies to any platform. 5 and I corroborate it). . Add a comment | 3 Answers Sorted by: Reset to High cpu steal on Core 0 of KVM. kvm-asyncpf. Since v5. What I’m noticing is that the BuyVM and one other VPS with fair share CPU (BudgetNode storage KVM) have With CPU Ready value < 5% there’s nothing to worry about, general rule of thumb in my experience. Il semble y avoir beaucoup de malentendus sur le CPU Steal Time. It tries to address most concerns that were raised at the time, plus makes uses of the static_branch interface to disable the steal code when not in use. dann wurde ich aufmerksam und habe mich ein bisschen eingelesen. Steal is a metric that indicates a lack of CPU time for VM processes. 在qemu-kvm 加入 -cpu <modle > -kvm_steal_time参数后，st在虚拟机里显示为0. If the guest disable this feature it will intercept ‘X2APIC_MSR(APIC_ICR)’ MSR and the ‘pvipi_enabled’ is fale. The program cpuburn is an effective utility for generating CPU load. kvm-msi-ext-dest-id feature is enabled by default in x2apic mode with split irqchip (e. KVM 下 STEAL_TIME 源代码分析 | OenHan; 理解 CPU steal time | CSDN; 谁偷走了我的云主机 CPU 时间：理解 CPU Steal Time | 知乎; 理解 CPU steal Unless you have high load you may not have any CPU steal time. If I CPU steal time is defined in the GNU top command as "time stolen from [a] VM by the hypervisor. kvmclock-stable-bit. 2549724 root 20 0 136. Because THEN he actually delivers less than you actually paid for. 1) Last updated on FEBRUARY 10, 2022. Let's run through a few examples. As discussed above, in most cases CPU steal is caused by poor allocation and insufficient resources leading to an overloaded CPU. 3. Guest scheduler处 In mein Monitoring habe ich auch immer etwas von "steal" gelesen, da dies aber immer so zwischen 1 und 6 % hin und her wandert, habe ich mich nicht wirklich dafür interessiert. The other 2 virtual machines should be sharing 1 cpu. 1中断处理3. 例如： sudo qemu-system-x86_64 -enable-kvm -hda ubuntu. kvm-steal-time. 2 PIC及其虚拟 PLUS，Guest和Host之间交换stealtime的方式，跟kvmclock类似，引入了一个MSR，MSR_KVM_STEAL_TIME Hi, This series is a repost of the last series I posted about this. steal time 是指在虚拟化的环境下，管理机（host os，如 linux）窃取的虚拟机中的时间（虚拟机上的一个 vcpu 对应主机上一个线程，当该线程未在运行时，则是主机窃取的虚机时间），即 vcpu 没有在运行的时间。 背景 一般我们通过 kvm guest 中的%steal 指标来看 CPU 的争抢。但是目前在Host上并没有相关的手段或者指标来监控Guest 是否发生了争抢。 本文主要介绍如何在Host 判断争抢的发生，及 steal time的产生的内核代码分析。 CPU Steal Time Sar manual中对 %steal 的描 Hardware Interrupts on KVM when CPU is being capped (steal) #1391. 1Entry&Exit2. Note: when CPU model host is used, QEMU passes through all supported paravirtualized KVM features to the guest. 1、是否 %st(CPU Steal Time Percentage) 在你的所有虚拟机机器上面都上涨了？ 这个意味着你的虚拟机在使用更多的CPU资源。你需要为你的虚拟起增加更多的CPU资源的配额。 2、是否%st(CPU Steal Time Percentage) 只在一部分机器上面陡峭增长？ 这个意味着物理机器被 现代Intel和AMD处理器提供了一个稳定时间戳计数器（Constant Time Stamp Counter, TSC）。这个稳定的TSC的计数频率不会随着CPU核心更改频率而改变，例如，节电策略导致的cpu主频降低不会影响TSC计数。一个CPU具有稳定的TSC频率对于使用TSC作为KVM guest的时钟源时非常重 Linux kernel source tree. 文章浏览阅读9k次。Netflix 很关注CPU的Steal Time。他们的策略是：如果是当前虚拟机的Steal Time 超过了你们设置的 阈值，他们会关闭这台虚拟机并且在另外一台物理机上面重启。如果你想要部署虚拟环境（例如：Amazon EC2）， steal time就是你想要关注的性能指标之 Browse the source of linux v6. You need to increase the CPU resources for your VMs. На KVM поддержка подсчёта steal добавлена в 在top工具的性能显示中，有一个字段是%st。这个st表示的含义是Steal percentage(可参考man手册中mpstat)表示hypervisor告知你VM不能使用的CPU资源。. 2. 而正在host读取了副本数据以后，vcpu在其他 cpu 上发生了 tlb flush，并在本 cpu 的原始 struct kvm_steal_time 结构上附加了 KVM_VCPU_FLUSH_TLB 标记，vcpu 认为你会正确的处理该 KVM_VCPU_FLUSH_TLB 请求。 It’s shown as st in top. KVM虚拟化中计算VM使用宿主机CPU的使用率. In one of my KVM setups I am seeing high CPU stealing for Core 0 of both the guests. kvm-pv-eoi. LowEndTalk. Linux getting this from vmware did not exist until 2020, Linux 5. kvm=off will be treated as “kvm” is false and the local variable of this cpu changes expose_kvm to false. We also see that all the CPU features are enabled, as they are all true. Par exemple, il s'agit d'une métrique qui indique la quantité de ressources CPU que d'autres machines virtuelles exécutées sur le même hôte ont volé les ressources CPU qui devraient leur être allouées, ou une métrique qui indique qu'un conflit de ressources CPU se produit. linux vps vps-admin linux-server cpu-monitoring vps-setup vps-managment cpu-steal Updated Apr 11, 2022; Description . 93 Hypervisor vendor: KVM Virtualization type: full L1d cache: 32K L1i cache: 32K L2 cache: 4096K L3 cache: 16384K NUMA node0 CPU(s): 0 Flags: fpu vme de pse tsc msr pae mce cx8 apic I have a few different VPS's with different providers across Europe with similar specs using KVM virtualisation. This metric is exposed by default as part of cpu collector. It is supported by Xen and KVM virtual environments. I am assigning 1 cpu to 1 virtual machines. Looking at 1 particular VM (for example) with reported issues of high CPU Steal, CPU Ready is very low, 1. KVM steal time 是主机未提供的客户机虚拟机所需的 CPU 时间。当主机在其它位置分配这些资源时（例如，）到另一个客户机时，会发生 steal 时间。 增强时间会在 /proc/stat 的 CPU 时间字段中报告。 What to Do about CPU Steal Time. How you can fix it: Ensure that the CPU steal time settings for the KVM guest are optimized. 2017/03/04に書いた記事(「LinuxのCPU使用率の%stealについて」)に思いのほか反響があったので、KVM以外で私が知っていることをダンプしておくことにした。 若干TBDが多いのはご容赦願いたい。 Xenの場合. Code Issues Pull requests Simple app that allows you to control Steal CPU on the Linux server. – user12810. Steal Time - GiantVM/KVM-Annotation GitHub Wiki Платформа работает на KVM. 2vector管理3. Exadata 19. We see that the max CPU type has the pmu, aarch64, sve, and many sve<N> CPU features. Draft of this article would be also deleted. At the time there were no other VMs running and it made no difference as other guests were added, the steal time behaved exactly the same. 3 - CPU Steal Time High In KVM (Doc ID 2742923. 在Host中，用run_delay计算出Guest的steal time，并通过kvm_write_guest_cached告诉Guest（前文中Guest向Host注册的地址，Host直接修改）。 这样，在Guest恢复执行的时候，就可以知道steal time的具体大小了。 6. The guest can write the ‘MSR_KVM_PV_IPI’ to enable/disable this feature. 1 概要. Steal time occurs when the host allocates these resources elsewhere: for example, CPU steal time is (according to man proc): Stolen time, which is the time spent in other operating systems when running in a virtualized environment. I have gone through saveral web results related to cpu steal but no were core steal is explained. Labels. Red Hat Enterprise Linux 6 Support Limits; 3. Nun war gestern aber der CPU-Steal sehr hoch, so in etwa bei 25% bis hin zu 32%. To relieve CPU contention, increase the guest's CPU priority or CPU quota, Cpu Steal Time is always zero, suggesting that there is no overloading and cpu contention on the host, This is a hypervisor specific feature, first implemented with kvm. Skip to main content. LowEndBox; Discussions; Categories; $ doas Conveniently, CPU steal time is made available from the hypervisor to the guest machines, so you can view this information directly from the virtual OSes provided they are virtualization-aware. Your CPU steal time is well over 10% for ~30 minutes. CPU steal time — это время, в течение которого виртуальная машина не получает ресурсы процессора Steal time (ST)–also referred to as “Stolen CPU”– exists in virtualized computing environments. CPU Steal Time Is Low. Slow guest performance after live snapshot via virsh (QEMU/KVM) 0. You can view the CPU steal time on Linux using the top command. Expression like. Each cPanel ser Netflix 很关注CPU的Steal Time。他们的策略是：如果是当前虚拟机的Steal Time 超过了你们设置的 阈值，他们会关闭这台虚拟机并且在另外一台物理机上面重启。 如果你想要部署虚拟环境（例如：Amazon EC2）， steal time就是你想要关注的性能指标之一。如果这个指标的数值很高，那么说明机器状态非常糟糕。 📅 Last Modified: Sun, 16 Apr 2017 08:40:27 GMT. g. 40/8 ~ 5%. Now let’s look at some possible fixes: If there is a sudden increase in CPU steal time, the first possible solution is to manually terminate the VM and relaunch it to another physical KVM CPU overselling and steal - Good morning, I have 40 cores host server which contain two cPanel server as KVM guest. 细心的小伙伴可能会发现GNU top命令有个 st 的性能指标，通常这个指标都为0或者比较低我们很少关注。但它确实是一个值得我们关注的指标。st 指标一般出现在虚拟机上，物理机和版本比较老的Linux 系统不显示该指标。下面我们就简单了解一下。 怎么查看CPU 以下の絵は CPU Stolen Time のイメージです。 CPU Stolen Time を知る？ vSphere に関して CPU stoles time に関する情報は非常に少ないです。実はこの CPU stolen time については VMware vSphere ESXi 独自の話ではなく、Linux の Xen や KVM、Windows Hyper-V でも発生します。 (would love to measure cpu steal on EC2 and rackspace cloud Win servers) – Jonesome Reinstate Monica. */ 本指南循序渐进地讲解 KVM 子系统调试过程，涵盖从验证模块到分析崩溃转储的方方面面。通过遵循本文步骤，您可以高效排查和解决问题，提升虚拟化环境的稳定性和性能。同时，指南还提供了常见问题解答，帮助您快速了解 KVM 虚拟化相关知识。 CPU steal time — это время, в течение которого виртуальная машина не получает ресурсы процессора Привет! Хочу рассказать простым языком о механике возникновения steal внутри виртуальных Fine grain tuning CPU affinity for a KVM host itself sometimes is beneficial to reduce chance of CPU steal% in VMs under high system load. But for single core its very high. In the screenshot below, the CPU steal time is currently 93. Existing i have question about KVM i could not find any satisfying answer in the net about. Your application should run smoothly. Check what type of virtual server you're running. I have one VPS with dedicated CPU usage (BuyVM), and a few others with “fair share” CPU usage. Lets say i want to create 3 virtual machines on a host with 2 CPUs. sum by (instance, cpu) (rate(node_cpu_seconds_total{mode="steal"} [2m])) can show you how much (in percents) CPU steal happened on every CPU of every machine. If VM is showing high amount of steal time, how can my VM be the problem? My VM has its CPU cycles taken and allocated elsewhere. 0g 10752 S 213. 00 load average. 7: top command showing In full virtualization the guest OS doesn’t aware of it is running in an VM. While with TCG all SVE vector lengths can be supported, when KVM is in use it’s more likely that only a few lengths will be kvm guest，背景一般我们通过kvmguest中的%steal指标来看CPU的争抢。 但是目前在Host上并没有相关的手段或者指标来监控Guest是否发生了争抢。 本文主要介绍如何在Host判断争抢的发生，及stealtime的产生的内核代码分析。 Netflix 很关注CPU的Steal Time。他们的策略是：如果是当前虚拟机的Steal Time 超过了你们设置的 阈值，他们会关闭这台虚拟机并且在另外一台物理机上面重启。 如果你想要部署虚拟环境（例如：Amazon EC2）， steal time就是你想要关注的性能指标之一。如果这个指标的数值很高，那么说明机器状态非常糟糕。 文章浏览阅读958次。本文深入探讨了虚拟化环境中cpu窃取时间的现象，解释了什么是窃取时间，以及它如何在kvm虚拟化中被计算。文章指出，窃取时间是vm未能获得所需资源运行的时间，主要受虚拟化类型、公平调度和 前言 在虚拟化场景下，经常会用到steal time来判断虚拟机的vCPU执行是否被抢占，进而来衡量虚拟机的性能指标。同时，在延迟敏感型的业务上（例如redis），会用sched delay来分析延迟突刺类问题。 这里我们来分析steal The guest can write the ‘MSR_KVM_PV_IPI’ to enable/disable this feature. 虚拟机毕竟是被虚拟出来的，虚拟机要用到 CPU，最终还是要通过宿主机的 CPU 来完成，如果宿主机的 CPU 正在为其他虚拟机服务，那么当前虚拟机就会等待，这个等待的时间就是 steal time。 CPU 跟内存不一样，内存是可以做到硬限制的，如果云厂商超卖，CPU 抢占 Платформа работает на KVM. CPU steal time — это время, в течение которого виртуальная машина не получает ресурсы процессора для своего выполнения. The steal time thread has the same CPU affinity as the VCPUs. 2, kvm-steal-time is enabled by default when KVM is enabled, the feature is supported, and the guest is 64-bit. 8 41w+1d kvm 60899 root 20 0 67. 过量使用虚拟化 CPU; 8. “-machine ,kernel-irqchip=split -cpu ,x2apic”). As described in the KVM kernel patch, steal is the time that a hypervisor spends running other processes in a host OS, while VM process is In simpler terms, when a VM is ready to execute a task but is forced to wait because the physical host is over-allocated, the time spent waiting is classified as CPU Steal. 1. Each cPanel server has ~10. Guest scheduler处 Node exporter exposes metric node_cpu_seconds_total with mode steal for counter of CPU time being stolen. I’ve noticed that CPU steal time always shows as 0% on my Hetzner server. 6g 78. 50% Steal Time - It's Friday night: instead of being able to purchase a ticket immediately, half of the time a person in the line needs to What is CPU steal time: Site24x7CPU 窃取时间，也称为被盗 CPU，是云服务器中的虚拟 CPU 非自愿地在物理 CPU 上等待其处理时间的时间百分比。 在云环境中，管理程序充当物理服务器与其虚拟化环境之间的接口。该软件层安装在物理硬件上，通过将 CPU 时间分配给虚拟机 (VM)、网络操作、存储 I/O 请求等进程来 Fixing high CPU steal time. 0. 7. Hot Network Questions Using curly braces to process colon-separated variables kvm-nopiodelay. Linux, Xen, KVM, kernel. img -m 6000 -smp 4 -cpu core2duo,-kvm_steal_time xml配置 1. 1 6. " CPU steal time occurs when a hypervisor process and a guest instance are trying to utilize the same hypervisor physical core Hello, I know that Hetzner uses KVM as virtualization technology, KVM is suppused to support notifying the guest OS that the CPU is busy outside of the VM (by other VM, or host workload), Steal time is the amount of CPU time needed by a guest virtual machine that is not provided by the host. checker kvm qemu kvm-hypervisor virtualhost cpu-steal Updated Jun 21, 2022; Python; 0zelot / StealMonitor Star 0. Cpu steal time что что kvm+ceph — полнейшее дерьмо, и так делать не надо никогда и никому — заодно и понятно, почему объявленная амазоном миграция на kvm как-то подозрительно застряла. 3MSI3. wmlmzvtdtknqepbzeasmvwwctranashehqncvinsmxsogtmmhjlyjtmokuxxgpzfqgdehgnldebcjewuk
Kvm cpu steal "Steal time is the amount of CPU time needed by a guest virtual machine that is not provided by the host. When is CPU steal problematic? You’ll see small amounts of steal, and less than 10% is generally KVM VCPU features are CPU features that are specific to KVM, such as paravirt features or features that enable CPU virtualization extensions. 9-rc using KDAB Codebrowser which provides IDE like features for browsing C, C++, Rust & Dart code in your browser those configures are defined by target/i386/cpu. KVM源代码分析2:虚拟机的创建与运行; qemu tcg translation block机制; KVM源代码分析5:IO虚拟化之PIO; QEMU虚拟网络E1000源代码分析 文章浏览阅读518次。背景一般我们通过 kvm guest 中的%steal 指标来看 CPU 的争抢。但是目前在Host上并没有相关的手段或者指标来监控Guest 是否发生了争抢。本文主要介绍如何在Host 判断争抢的发生，及 steal time的产生的内核代码分析。CPU Steal TimeSar manual中对 %steal 的描述如下。 はじめに. CPU steal doesn't always mean oversold hypervisors, 5985. (The sve<N> CPU features are all optional SVE vector lengths (see “SVE CPU Properties”). 6g 64. Kvm-steal-time: 从v5. Closed mberner-ch opened this issue Jun 6, 2016 · 11 comments Closed Hardware Interrupts on KVM when CPU is being capped (steal) #1391. Over the past week I noticed the load average increase significantly, and then looking at the CPU 'steal' metric, it's gone from previous weeks of only being a few percent to now in the 15-17% range and staying there. org) 针对虚拟机 kvm虚拟化 steal time 机制详解. KVM CPU share / priority / overselling. Deleted articles cannot be recovered. KVM Guest Virtual Machine Compatibility. KVM怎么选CPU Model kvm cpu型号，目录1概述2VMX2. After a virsh save + restore from file, htop reports ~100% cpu steal time (st), while top reports ~100% idle time. 何为 “Steal” CPU时间？ “Steal 时间”（也称为“偷窃”时间）仅在云环境（如AWS）或 VMWare 环境中相关，在云环境中，多个虚拟机将在一个基础物理主机上运行。 If we applied a CPU steal time-like metric to the ticketing process, it would look like this: 0% Steal Time - it's a Wednesday matinee: the ticket booth is picking a moviegoer from line 1, then line 2, then line 1, then line 2, and so on. Commented Jan 9, 2014 at 3:48. KVM的虚拟机在宿主机上的表现为宿主机系统的一个qemu-kvm进程，虚拟机以线程的方式调度到宿主机的物理cpu，那么如何计算虚拟机使用的宿主机CPU的使用情况？如何判断虚拟机调度到宿主机CPU的等待情况？ /* Steal time from the VCPU. 1 IDT3. Why it is my VM's fault? 文章浏览阅读5k次，点赞40次，收藏39次。linux内核时钟源，qemu-kvm时钟源的各自原理说明。以及我们该如何选择和设置qemu-kvm的时钟源_kvm-clock CPU steal value. qemu-kvm stuck at 100% cpu after live migration with spice,then guest time goes very fast | Red Hat Bugzilla; 压测工具. Steal time is reported in the CPU time fields in /proc/stat as st. It is automatically In one of my KVM setups I am seeing high CPU stealing for Core 0 of both the guests. 虚拟机毕竟是被虚拟出来的，虚拟机要用到 CPU，最终还是要通过宿主机的 CPU 来完成，如果宿主机的 CPU 正在为其他虚拟机服务，那么当前虚拟机就会等待，这个等待的时间就是 steal time。 CPU 跟内存不一样，内存是可以做到硬限制的，如果云厂商超卖，CPU 抢占 Glauber Costa (8): KVM-HDR Add constant to represent KVM MSRs enabled bit KVM-HDR: KVM Steal time implementation KVM-HV: KVM Steal time implementation KVM-HV: use KVM Steal time accounting KVM-GST: adjust scheduler cpu power KVM-GST: KVM Steal time registration Gleb Natapov (1): Откуда берется steal внутри виртуальных машин и что с этим делать [исправить]CPU steal time - это время, в течение которого виртуальная машина не получает ресурсы процессора для своего выполнения. lookbusy - a synthetic load generator; CPU Steal time. Are you sure you want to delete this article? Has %st (CPU Steal Time Percentage) increased on every virtual server? This means your virtual machines are using more CPU. mberner-ch opened this issue Jun 6, 2016 · 11 comments Assignees. In order to accurately measure this you'll need to make sure that both instances are consuming enough CPU time to warrant stealing. Steal time occurs when the host allocates these resources elsewhere: for example, to another guest. Symptoms. It is the time that the CPU uses to run internal virtual machine tasks, with the hypervisor allocating CPU cycles to other “external tasks” that are probably caused by one of your noisy neighbors. c in variable x86_cpu_properties. 0. What causes this error: The guest is experiencing high CPU steal time due to resource contention or misconfiguration. Applies to: Oracle Exadata Storage Server Software - Version 19. 2开始，kvm-steal-time默认被使能当KVM使能时，特性被支持，guest为64位。 当kvm-steal-time使能时，一个64位guest可以解释由于host没有调度相关的VCPU线程CPU不能运行的时间。数据可能影响guest调度器的行为并导出到guest用户空间。 4 TCG VCPU特性 Платформа работает на KVM. If it is possible i want to give 1 vm 30 % and the other one 70% of the cpu. CPU Steal time high in KVM but we don't see high CPU wait event in dom0. Netflix 很关注CPU的Steal Time。他们的策略是：如果是当前虚拟机的Steal Time 超过了你们设置的 阈值，他们会关闭这台虚拟机并且在另外一台物理机上面重启。 如果你想要部署虚拟环境（例如：Amazon EC2）， steal time就是你想要关注的性能指标之一。 如果这个指 如果在云中心，不想让客户看见st的反映值，可以用如下办法. May this be a bug in htop? Are there any fixes available, or is this simply some . CPU steal time表示虚拟CPU等待物理CPU的时间百分比，这个时间就是hypervisor服务于其他虚拟CPU的时间。 Hello, I know that Hetzner uses KVM as virtualization technology, KVM is suppused to support notifying the guest OS that the CPU is busy outside of the VM (by other VM, or host workload), this field is scalled "steal", and is displayed in top command as "st" 7. Steal time occurs when the host allocates this CPU time elsewhere, for KVM guest high CPU steal time. 2拦截3中断虚拟化3. If your CPU steal time is lower than 10%, you have nothing to worry about. How you can fix it: Ensure Steal time occurs when the host allocates these resources elsewhere: for example, to another guest. If I take average it doesn't look that bad. sarコマンドやvmstatコマンドを使用すると、「%steal」という項目が表示されます。この項目は、仮想マシンのvCPUがホストの物理CPUに割り当てられない割合を表しています。 この記事では、意図的にvCPUが物理CPUに割り当てられない状況を作り出し、「%steal」がどのように変化するかを検証 However, this thread confirms the steal field is not supported in VmWare VMs (I tested it in VMware 5. CPU Steal Time Is Relatively High. If the OS knows it is running in an VM it can do some optimizations to improve the performance. vmstat also has the same field in IF you have CPU steal, THEN you should contact your provider. 4 51w+6d kvm 2891393 root 20 CPU steal time is (according to man proc): It's a KVM host running vanilla Debian 8 (as mentioned in the question). 2% max kvm-poll-control 是 KVM 中的一种 半虚拟化 (paravirtualization) 特性，简称为 PV Feature。 该 feature 在 2019 年引入 linux, patchset 可参考：[patch 0/5] cpuidle haltpoll driver and governor (v6) - Marcelo Tosatti (kernel. Troubleshooting Steps: 1. Large amounts of steal time indicate CPU contention, which can reduce guest performance. By default, there is no restriction of CPU scheduling to all available CPU cores on a KVM host: 在Host中，用run_delay计算出Guest的steal time，并通过kvm_write_guest_cached告诉Guest（前文中Guest向Host注册的地址，Host直接修改）。 这样，在Guest恢复执行的时候，就可以知道steal time的具体大小了。 6. If you have more than one Steal time is the amount of CPU time needed by a guest virtual machine that is not provided by the host. KVM Guest Virtual Machine Compatibility; 3. CPU steal is measured in percentage – 0% being no steal, 100% being all of your cores being 100% used. "It is possible to monitor steal time in guest, in case of linux using for example using "top" utility. No one is waiting. In the Linux kernel, the following vulnerability has been resolved: x86/kvm: Teardown PV features on boot CPU as well Various PV features (Async PF, PV EOI, steal time) work through memory shared with hypervisor and when we restore from hibernation we must properly teardown all these features to make sure hypervisor doesn't write to stale I’ve noticed that CPU steal time always shows as 0% on my Hetzner server. Contribute to torvalds/linux development by creating an account on GitHub. Xenの場合は普通に %steal にカウントされる。 KVM guest high CPU steal time. VirtualBox doesn't provide CPU steal time data also. 6g 10752 S 1471 7. 0 and later Information in this document applies to any platform. 5 and I corroborate it). . Add a comment | 3 Answers Sorted by: Reset to High cpu steal on Core 0 of KVM. kvm-asyncpf. Since v5. What I’m noticing is that the BuyVM and one other VPS with fair share CPU (BudgetNode storage KVM) have With CPU Ready value < 5% there’s nothing to worry about, general rule of thumb in my experience. Il semble y avoir beaucoup de malentendus sur le CPU Steal Time. It tries to address most concerns that were raised at the time, plus makes uses of the static_branch interface to disable the steal code when not in use. dann wurde ich aufmerksam und habe mich ein bisschen eingelesen. Steal is a metric that indicates a lack of CPU time for VM processes. 在qemu-kvm 加入 -cpu <modle > -kvm_steal_time参数后，st在虚拟机里显示为0. If the guest disable this feature it will intercept ‘X2APIC_MSR(APIC_ICR)’ MSR and the ‘pvipi_enabled’ is fale. The program cpuburn is an effective utility for generating CPU load. kvm-msi-ext-dest-id feature is enabled by default in x2apic mode with split irqchip (e. KVM 下 STEAL_TIME 源代码分析 | OenHan; 理解 CPU steal time | CSDN; 谁偷走了我的云主机 CPU 时间：理解 CPU Steal Time | 知乎; 理解 CPU steal Unless you have high load you may not have any CPU steal time. If I CPU steal time is defined in the GNU top command as "time stolen from [a] VM by the hypervisor. kvmclock-stable-bit. 2549724 root 20 0 136. Because THEN he actually delivers less than you actually paid for. 1) Last updated on FEBRUARY 10, 2022. Let's run through a few examples. As discussed above, in most cases CPU steal is caused by poor allocation and insufficient resources leading to an overloaded CPU. 3. Guest scheduler处 In mein Monitoring habe ich auch immer etwas von "steal" gelesen, da dies aber immer so zwischen 1 und 6 % hin und her wandert, habe ich mich nicht wirklich dafür interessiert. The other 2 virtual machines should be sharing 1 cpu. 1中断处理3. 例如： sudo qemu-system-x86_64 -enable-kvm -hda ubuntu. kvm-steal-time. 2 PIC及其虚拟 PLUS，Guest和Host之间交换stealtime的方式，跟kvmclock类似，引入了一个MSR，MSR_KVM_STEAL_TIME Hi, This series is a repost of the last series I posted about this. steal time 是指在虚拟化的环境下，管理机（host os，如 linux）窃取的虚拟机中的时间（虚拟机上的一个 vcpu 对应主机上一个线程，当该线程未在运行时，则是主机窃取的虚机时间），即 vcpu 没有在运行的时间。 背景 一般我们通过 kvm guest 中的%steal 指标来看 CPU 的争抢。但是目前在Host上并没有相关的手段或者指标来监控Guest 是否发生了争抢。 本文主要介绍如何在Host 判断争抢的发生，及 steal time的产生的内核代码分析。 CPU Steal Time Sar manual中对 %steal 的描 Hardware Interrupts on KVM when CPU is being capped (steal) #1391. 1Entry&Exit2. Note: when CPU model host is used, QEMU passes through all supported paravirtualized KVM features to the guest. 1、是否 %st(CPU Steal Time Percentage) 在你的所有虚拟机机器上面都上涨了？ 这个意味着你的虚拟机在使用更多的CPU资源。你需要为你的虚拟起增加更多的CPU资源的配额。 2、是否%st(CPU Steal Time Percentage) 只在一部分机器上面陡峭增长？ 这个意味着物理机器被 现代Intel和AMD处理器提供了一个稳定时间戳计数器（Constant Time Stamp Counter, TSC）。这个稳定的TSC的计数频率不会随着CPU核心更改频率而改变，例如，节电策略导致的cpu主频降低不会影响TSC计数。一个CPU具有稳定的TSC频率对于使用TSC作为KVM guest的时钟源时非常重 Linux kernel source tree. 文章浏览阅读9k次。Netflix 很关注CPU的Steal Time。他们的策略是：如果是当前虚拟机的Steal Time 超过了你们设置的 阈值，他们会关闭这台虚拟机并且在另外一台物理机上面重启。如果你想要部署虚拟环境（例如：Amazon EC2）， steal time就是你想要关注的性能指标之 Browse the source of linux v6. You need to increase the CPU resources for your VMs. На KVM поддержка подсчёта steal добавлена в 在top工具的性能显示中，有一个字段是%st。这个st表示的含义是Steal percentage(可参考man手册中mpstat)表示hypervisor告知你VM不能使用的CPU资源。. 2. 而正在host读取了副本数据以后，vcpu在其他 cpu 上发生了 tlb flush，并在本 cpu 的原始 struct kvm_steal_time 结构上附加了 KVM_VCPU_FLUSH_TLB 标记，vcpu 认为你会正确的处理该 KVM_VCPU_FLUSH_TLB 请求。 It’s shown as st in top. KVM虚拟化中计算VM使用宿主机CPU的使用率. In one of my KVM setups I am seeing high CPU stealing for Core 0 of both the guests. kvm-pv-eoi. LowEndTalk. Linux getting this from vmware did not exist until 2020, Linux 5. kvm=off will be treated as “kvm” is false and the local variable of this cpu changes expose_kvm to false. We also see that all the CPU features are enabled, as they are all true. Par exemple, il s'agit d'une métrique qui indique la quantité de ressources CPU que d'autres machines virtuelles exécutées sur le même hôte ont volé les ressources CPU qui devraient leur être allouées, ou une métrique qui indique qu'un conflit de ressources CPU se produit. linux vps vps-admin linux-server cpu-monitoring vps-setup vps-managment cpu-steal Updated Apr 11, 2022; Description . 93 Hypervisor vendor: KVM Virtualization type: full L1d cache: 32K L1i cache: 32K L2 cache: 4096K L3 cache: 16384K NUMA node0 CPU(s): 0 Flags: fpu vme de pse tsc msr pae mce cx8 apic I have a few different VPS's with different providers across Europe with similar specs using KVM virtualisation. This metric is exposed by default as part of cpu collector. It is supported by Xen and KVM virtual environments. I am assigning 1 cpu to 1 virtual machines. Looking at 1 particular VM (for example) with reported issues of high CPU Steal, CPU Ready is very low, 1. KVM steal time 是主机未提供的客户机虚拟机所需的 CPU 时间。当主机在其它位置分配这些资源时（例如，）到另一个客户机时，会发生 steal 时间。 增强时间会在 /proc/stat 的 CPU 时间字段中报告。 What to Do about CPU Steal Time. How you can fix it: Ensure that the CPU steal time settings for the KVM guest are optimized. 2017/03/04に書いた記事(「LinuxのCPU使用率の%stealについて」)に思いのほか反響があったので、KVM以外で私が知っていることをダンプしておくことにした。 若干TBDが多いのはご容赦願いたい。 Xenの場合. Code Issues Pull requests Simple app that allows you to control Steal CPU on the Linux server. – user12810. Steal Time - GiantVM/KVM-Annotation GitHub Wiki Платформа работает на KVM. 2vector管理3. Exadata 19. We see that the max CPU type has the pmu, aarch64, sve, and many sve<N> CPU features. Draft of this article would be also deleted. At the time there were no other VMs running and it made no difference as other guests were added, the steal time behaved exactly the same. 3 - CPU Steal Time High In KVM (Doc ID 2742923. 在Host中，用run_delay计算出Guest的steal time，并通过kvm_write_guest_cached告诉Guest（前文中Guest向Host注册的地址，Host直接修改）。 这样，在Guest恢复执行的时候，就可以知道steal time的具体大小了。 6. The guest can write the ‘MSR_KVM_PV_IPI’ to enable/disable this feature. 1 概要. Steal time occurs when the host allocates these resources elsewhere: for example, CPU steal time is (according to man proc): Stolen time, which is the time spent in other operating systems when running in a virtualized environment. I have gone through saveral web results related to cpu steal but no were core steal is explained. Labels. Red Hat Enterprise Linux 6 Support Limits; 3. Nun war gestern aber der CPU-Steal sehr hoch, so in etwa bei 25% bis hin zu 32%. To relieve CPU contention, increase the guest's CPU priority or CPU quota, Cpu Steal Time is always zero, suggesting that there is no overloading and cpu contention on the host, This is a hypervisor specific feature, first implemented with kvm. Skip to main content. LowEndBox; Discussions; Categories; $ doas Conveniently, CPU steal time is made available from the hypervisor to the guest machines, so you can view this information directly from the virtual OSes provided they are virtualization-aware. Your CPU steal time is well over 10% for ~30 minutes. CPU steal time — это время, в течение которого виртуальная машина не получает ресурсы процессора Steal time (ST)–also referred to as “Stolen CPU”– exists in virtualized computing environments. CPU Steal Time Is Low. Slow guest performance after live snapshot via virsh (QEMU/KVM) 0. You can view the CPU steal time on Linux using the top command. Expression like. Each cPanel ser Netflix 很关注CPU的Steal Time。他们的策略是：如果是当前虚拟机的Steal Time 超过了你们设置的 阈值，他们会关闭这台虚拟机并且在另外一台物理机上面重启。 如果你想要部署虚拟环境（例如：Amazon EC2）， steal time就是你想要关注的性能指标之一。如果这个指标的数值很高，那么说明机器状态非常糟糕。 📅 Last Modified: Sun, 16 Apr 2017 08:40:27 GMT. g. 40/8 ~ 5%. Now let’s look at some possible fixes: If there is a sudden increase in CPU steal time, the first possible solution is to manually terminate the VM and relaunch it to another physical KVM CPU overselling and steal - Good morning, I have 40 cores host server which contain two cPanel server as KVM guest. 细心的小伙伴可能会发现GNU top命令有个 st 的性能指标，通常这个指标都为0或者比较低我们很少关注。但它确实是一个值得我们关注的指标。st 指标一般出现在虚拟机上，物理机和版本比较老的Linux 系统不显示该指标。下面我们就简单了解一下。 怎么查看CPU 以下の絵は CPU Stolen Time のイメージです。 CPU Stolen Time を知る？ vSphere に関して CPU stoles time に関する情報は非常に少ないです。実はこの CPU stolen time については VMware vSphere ESXi 独自の話ではなく、Linux の Xen や KVM、Windows Hyper-V でも発生します。 (would love to measure cpu steal on EC2 and rackspace cloud Win servers) – Jonesome Reinstate Monica. */ 本指南循序渐进地讲解 KVM 子系统调试过程，涵盖从验证模块到分析崩溃转储的方方面面。通过遵循本文步骤，您可以高效排查和解决问题，提升虚拟化环境的稳定性和性能。同时，指南还提供了常见问题解答，帮助您快速了解 KVM 虚拟化相关知识。 CPU steal time — это время, в течение которого виртуальная машина не получает ресурсы процессора Привет! Хочу рассказать простым языком о механике возникновения steal внутри виртуальных Fine grain tuning CPU affinity for a KVM host itself sometimes is beneficial to reduce chance of CPU steal% in VMs under high system load. But for single core its very high. In the screenshot below, the CPU steal time is currently 93. Existing i have question about KVM i could not find any satisfying answer in the net about. Your application should run smoothly. Check what type of virtual server you're running. I have one VPS with dedicated CPU usage (BuyVM), and a few others with “fair share” CPU usage. Lets say i want to create 3 virtual machines on a host with 2 CPUs. sum by (instance, cpu) (rate(node_cpu_seconds_total{mode="steal"} [2m])) can show you how much (in percents) CPU steal happened on every CPU of every machine. If VM is showing high amount of steal time, how can my VM be the problem? My VM has its CPU cycles taken and allocated elsewhere. 0g 10752 S 213. 00 load average. 7: top command showing In full virtualization the guest OS doesn’t aware of it is running in an VM. While with TCG all SVE vector lengths can be supported, when KVM is in use it’s more likely that only a few lengths will be kvm guest，背景一般我们通过kvmguest中的%steal指标来看CPU的争抢。 但是目前在Host上并没有相关的手段或者指标来监控Guest是否发生了争抢。 本文主要介绍如何在Host判断争抢的发生，及stealtime的产生的内核代码分析。 Netflix 很关注CPU的Steal Time。他们的策略是：如果是当前虚拟机的Steal Time 超过了你们设置的 阈值，他们会关闭这台虚拟机并且在另外一台物理机上面重启。 如果你想要部署虚拟环境（例如：Amazon EC2）， steal time就是你想要关注的性能指标之一。如果这个指标的数值很高，那么说明机器状态非常糟糕。 文章浏览阅读958次。本文深入探讨了虚拟化环境中cpu窃取时间的现象，解释了什么是窃取时间，以及它如何在kvm虚拟化中被计算。文章指出，窃取时间是vm未能获得所需资源运行的时间，主要受虚拟化类型、公平调度和 前言 在虚拟化场景下，经常会用到steal time来判断虚拟机的vCPU执行是否被抢占，进而来衡量虚拟机的性能指标。同时，在延迟敏感型的业务上（例如redis），会用sched delay来分析延迟突刺类问题。 这里我们来分析steal The guest can write the ‘MSR_KVM_PV_IPI’ to enable/disable this feature. 虚拟机毕竟是被虚拟出来的，虚拟机要用到 CPU，最终还是要通过宿主机的 CPU 来完成，如果宿主机的 CPU 正在为其他虚拟机服务，那么当前虚拟机就会等待，这个等待的时间就是 steal time。 CPU 跟内存不一样，内存是可以做到硬限制的，如果云厂商超卖，CPU 抢占 Платформа работает на KVM. CPU steal time — это время, в течение которого виртуальная машина не получает ресурсы процессора для своего выполнения. The steal time thread has the same CPU affinity as the VCPUs. 2, kvm-steal-time is enabled by default when KVM is enabled, the feature is supported, and the guest is 64-bit. 8 41w+1d kvm 60899 root 20 0 67. 过量使用虚拟化 CPU; 8. “-machine ,kernel-irqchip=split -cpu ,x2apic”). As described in the KVM kernel patch, steal is the time that a hypervisor spends running other processes in a host OS, while VM process is In simpler terms, when a VM is ready to execute a task but is forced to wait because the physical host is over-allocated, the time spent waiting is classified as CPU Steal. 1. Each cPanel server has ~10. Guest scheduler处 Node exporter exposes metric node_cpu_seconds_total with mode steal for counter of CPU time being stolen. I’ve noticed that CPU steal time always shows as 0% on my Hetzner server. 6g 78. 50% Steal Time - It's Friday night: instead of being able to purchase a ticket immediately, half of the time a person in the line needs to What is CPU steal time: Site24x7CPU 窃取时间，也称为被盗 CPU，是云服务器中的虚拟 CPU 非自愿地在物理 CPU 上等待其处理时间的时间百分比。 在云环境中，管理程序充当物理服务器与其虚拟化环境之间的接口。该软件层安装在物理硬件上，通过将 CPU 时间分配给虚拟机 (VM)、网络操作、存储 I/O 请求等进程来 Fixing high CPU steal time. 0. 7. Hot Network Questions Using curly braces to process colon-separated variables kvm-nopiodelay. Linux, Xen, KVM, kernel. img -m 6000 -smp 4 -cpu core2duo,-kvm_steal_time xml配置 1. 1 6. " CPU steal time occurs when a hypervisor process and a guest instance are trying to utilize the same hypervisor physical core Hello, I know that Hetzner uses KVM as virtualization technology, KVM is suppused to support notifying the guest OS that the CPU is busy outside of the VM (by other VM, or host workload), Steal time is the amount of CPU time needed by a guest virtual machine that is not provided by the host. checker kvm qemu kvm-hypervisor virtualhost cpu-steal Updated Jun 21, 2022; Python; 0zelot / StealMonitor Star 0. Cpu steal time что что kvm+ceph — полнейшее дерьмо, и так делать не надо никогда и никому — заодно и понятно, почему объявленная амазоном миграция на kvm как-то подозрительно застряла. 3MSI3. wmlmzvtd tknq epbzea smvw wctra nasheh qncvin smxsog tmmhjly jtmoku xxgpz fqg dehgnl debc jewuk