linux-kernel - Re: [GIT PULL v2] Networking for 6.7

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Date:   Thu, 9 Nov 2023 18:49:34 +0300
From:   "Kirill A. Shutemov" <kirill@...temov.name>
To:     Jakub Kicinski <kuba@...nel.org>,
        Yonghong Song <yonghong.song@...ux.dev>,
        Alexei Starovoitov <ast@...nel.org>
Cc:     torvalds@...ux-foundation.org, davem@...emloft.net,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        pabeni@...hat.com
Subject: Re: [GIT PULL v2] Networking for 6.7

On Tue, Oct 31, 2023 at 02:09:48PM -0700, Jakub Kicinski wrote:
>       bpf: Add support for non-fix-size percpu mem allocation

Recent changes in BPF increased per-CPU memory consumption a lot.

On virtual machine with 288 CPUs, per-CPU consumtion increased from 111 MB
to 969 MB, or 8.7x.

I've bisected it to the commit 41a5db8d8161 ("bpf: Add support for
non-fix-size percpu mem allocation"), which part of the pull request.

-- 
  Kiryl Shutsemau / Kirill A. Shutemov