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docs: update virt/vm

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lukas 2025-06-05 04:40:20 +00:00
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virt/vm.md
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@ -2,7 +2,7 @@
title: Machine definition
description: Virtual machine hardware
published: true
date: 2025-06-04T16:07:13.413Z
date: 2025-06-05T04:40:18.851Z
tags:
editor: markdown
dateCreated: 2025-06-01T17:37:29.262Z
@ -214,7 +214,7 @@ For Windows NT guests, more features are enabled:
In most case, the guest clock derives from the host clock.
In the following example, the hardware clock uses [UTC](https://en.wikipedia.org/wiki/Coordinated_Universal_Time) and has several timers
In the following example, the hardware clock uses [UTC](https://en.wikipedia.org/wiki/Coordinated_Universal_Time), the *KVM clock* timer has a catchup policy, which means that a paused guest whose clock will is frozen will eventually catch up with the host clock when the guest is resumed:
```
<domain type='kvm'>
@ -226,8 +226,6 @@ In the following example, the hardware clock uses [UTC](https://en.wikipedia.org
</domain>
```
The *KVM clock* timer has a catchup policy, which means that a paused guest whose clock will is frozen will eventually catch up with the host clock when the guest is resumed.
> On non realtime kernel, the KVM clock is updated every 5 minutes for all vCPUs, which may not be enough for accurate timekeeping. For that reason, "[Red Hat recommends running NTP in the virtual machine if accurate timekeeping is required](https://access.redhat.com/solutions/27865)"
{.is-info}