From: "DERUMIER, Alexandre" <alexandre.derumier@groupe-cyllene.com>
To: "pve-devel@lists.proxmox.com" <pve-devel@lists.proxmox.com>,
"f.ebner@proxmox.com" <f.ebner@proxmox.com>,
"k.chai@proxmox.com" <k.chai@proxmox.com>
Subject: Re: [PATCH pve-qemu 0/2] Re-enable tcmalloc as the memory allocator
Date: Fri, 10 Apr 2026 10:45:33 +0000 [thread overview]
Message-ID: <4628fcc1c283bc4ae80f19e6fe8ae922c0968af9.camel@groupe-cyllene.com> (raw)
In-Reply-To: <b1db5ad4-b3aa-4980-afd6-56cce2120fad@proxmox.com>
>>How does the performance change when doing IO within a QEMU guest?
>>
>>How does this affect the performance for other storage types, like
>>ZFS,
>>qcow2 on top of directory-based storages, qcow2 on top of LVM, LVM-
>>thin,
>>etc. and other workloads like saving VM state during snapshot,
>>transfer
>>during migration, maybe memory hotplug/ballooning, network
>>performance
>>for vNICs?
Hi Fiona,
I'm stil running in production (I have keeped tcmalloc after the
removal some year ago from the pve build), and I didn't notice problem.
(but I still don't use pbs).
But I never have done bench with/without it since 5/6 year.
Maybe vm memory should be checked too, I'm thinking about RSS memory
with balloon free_page_reporting, to see if it's correcting freeing
memory.
prev parent reply other threads:[~2026-04-10 10:45 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-10 4:30 Kefu Chai
2026-04-10 4:30 ` [PATCH pve-qemu 1/2] PVE: use " Kefu Chai
2026-04-10 4:30 ` [PATCH pve-qemu 2/2] d/rules: enable " Kefu Chai
2026-04-10 8:12 ` [PATCH pve-qemu 0/2] Re-enable " Fiona Ebner
2026-04-10 10:45 ` DERUMIER, Alexandre [this message]
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