>>What is the suggestion - disbale the pstate driver? I think that would
yes, this is increase power consumption. But increase stability & latencies.
my old xeons (previous sandybridge) and amd, always are at maximum cpu
Redhat have a special daemon "tuned", which have some tunables profiles for
this (latency,bandwith, ...)
>>Really? You observed retransmits because of different CPU frequency. I think
>>much larger speed differences, for example caused by high load (as opposed to
I'm seeing a lot less retransmit since I have disable pstate.
(but maybe this is because of bug where frequency was stuck low, and I have
also a big cluster with a lot of vms)
----- Mail original -----
De: "dietmar" <diet...@proxmox.com>
À: "aderumier" <aderum...@odiso.com>, "pve-devel" <email@example.com>
Envoyé: Mardi 20 Septembre 2016 09:52:51
Objet: Re: [pve-devel] intel pstate: wrong cpu frequency with performance
> I think this is the normal behavior of pstate, as they are a lower limit.
> But for virtualisation, I think it's really bad to have changing frequency.
> (clock problem for example).
What is the suggestion - disbale the pstate driver? I think that would increase
> Also for corosync, that mean that a loaded node will have faster frequency,
> and non-loaded node low frequency.
> This can give us reload corosync.conf after removing a node., because low
> frequency take more time to get the corosync message than the fastest node
Really? You observed retransmits because of different CPU frequency. I think
much larger speed differences, for example caused by high load (as opposed to
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