From: "DERUMIER, Alexandre" <Alexandre.DERUMIER@groupe-cyllene.com>
To: "pve-devel@lists.proxmox.com" <pve-devel@lists.proxmox.com>,
"dietmar@proxmox.com" <dietmar@proxmox.com>
Subject: Re: [pve-devel] auto ballooning && ksm thresholds both at 80%
Date: Mon, 3 Jan 2022 08:20:21 +0000 [thread overview]
Message-ID: <cf76b90ee67864df7586ccbddf0537046620a009.camel@groupe-cyllene.com> (raw)
In-Reply-To: <1568079353.1966.1640961060895@webmail.proxmox.com>
Le vendredi 31 décembre 2021 à 15:31 +0100, Dietmar Maurer a écrit :
Currently both are at 80%,
that mean that ballooning is vm reducing memory fast, and ksm don't
have time to run.
as ballooning is a lot more intrusive than ksm, I wonder if it couldn't
be set to something like 90%.
That sounds reasonable to me, but can you see that theoretical effect when you run your test?
Hi Dietmar,
Happy new year ! (I'm currently in holiday this week, so, I check that next week)
I'll do more tests to be sure. (I don't use ballooning in production, but I'm a big user of ksm, I have some big nodes with something like 200GB ksm on 700GB servers).
My Idea behind this is to implement auto-balancing, vm migration, when memory threshold is between ksm && autoballoonig).
1) 80%: ksm
2) ~= 85-89% : auto balancing/migration
3) ~= 90% : auto ballonning
4) ~= 100% : swap
next prev parent reply other threads:[~2022-01-03 8:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-31 14:31 Dietmar Maurer
2022-01-03 8:20 ` DERUMIER, Alexandre [this message]
-- strict thread matches above, loose matches on Subject: below --
2021-12-30 10:47 DERUMIER, Alexandre
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