Comment 13 for bug 1346917
Revision history for this message
| Thiago Martins (martinx) wrote Re: [Bug 1346917] Re: Using KSM on NUMA capable machines can cause KVM guest performance and stability issues | #13 |
Why not go with Linux 3.19 ?
You can just install it by running:
sudo apt-get install linux-generic-
It is by far, much more stable than Linux 3.13 (specially the network
stack)... ;-)
On 6 October 2015 at 11:36, Jim <email address hidden> wrote:
> This is NOT fixed by 3.13.0-33.58. It continues to persist even with
> 3.13.0-65.106 (and 3.13.0-63.103).
>
> I have around 10 VMs running but ONE in particular disconnects from the
> network every hour or so.
>
> I had this issue previously but it was initially gone on Ubuntu 14.04
> LTS but had come back recently - perhaps some kernel regression ?
>
> dmesg shows
>
> [42524.196629] kvm: zapping shadow pages for mmio generation wraparound
> [42538.140013] br0: port 2(vnet0) entered learning state
> [42538.268017] br1: port 2(vnet1) entered learning state
> [42553.180008] br0: topology change detected, propagating
> [42553.180015] br0: port 2(vnet0) entered forwarding state
> [42553.308008] br1: topology change detected, propagating
> [42553.308014] br1: port 2(vnet1) entered forwarding state
>
> (and NIC connection is gone)
>
> It's not clear if this is just co-incidence or if this is a pointer to
> the issue.
>
> This VM is unusual in my VMs becuase it is the only one with 2 NIC
> connections to br1 and br0. All the others connect to just br0. Those
> others work OK.
>
> Happy to try suggestions to track this down.
>
> --
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> duplicate bug report (1341195).
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>
> Title:
> Using KSM on NUMA capable machines can cause KVM guest performance and
> stability issues
>
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