Re: [pve-devel] [pbs-devel] Chunk verification speedup discussion, similar speedup opportunities elsewhere

[Adam Kalisz via pve-devel <pve-devel@lists.proxmox.com>]

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From: Adam Kalisz <adam.kalisz@notnullmakers.com>
To: Proxmox Backup Server development discussion <pbs-devel@lists.proxmox.com>
Cc: Proxmox VE development discussion <pve-devel@lists.proxmox.com>,  Dominik Csapak <d.csapak@proxmox.com>, Thomas Lamprecht <t.lamprecht@proxmox.com>
Subject: Re: [pbs-devel] Chunk verification speedup discussion, similar speedup opportunities elsewhere
Date: Thu, 11 Sep 2025 10:09:41 +0200
Message-ID: <8c7b0af096f4ae6d333908c9fcd3369c649c189b.camel@notnullmakers.com>

Hi,

is there any progress with the chunk verification speedup with the
adjustment as suggested by Thomas?

On Fri, 2025-07-25 at 17:03 +0200, Thomas Lamprecht wrote:
> Am 25.07.25 um 13:24 schrieb Adam Kalisz:
> > I missed whether the chunk verification speedup when loading chunks
> > got applied or whether it was somehow included in the S3-like
> > storage option change set.
> 
> btw. had a quick talk with Dominik about this topic, while having the
> possibility for this would be nice, server side parallelism is a
> different thing than client-side, as being able to starve the rest of
> the system of all available IO is much easier possible in the server-
> side case, as there is currently no knob to enforce some kind of
> pacing or maximum bandwidth like the bandwidth limits that client can
> be enforced too.
> 
> So the mentioned series should IMO only be applied if it can be opted
> out, or, better in the long term, a pacing/IO bandwidth limit can be
> enforced. That is naturally a big amount of work, mostly in
> evaluating different options and deciding for what can make sense,
> that's why I mentioned that being able to opt-out could be enough,
> then admins could at least keep the status quo.

Thanks

Adam


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