netdev - Re: [PATCH net-next] Documentation: add a description for net.core.high_order_alloc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20220706141839.469986f5@kernel.org>
Date:   Wed, 6 Jul 2022 14:18:39 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Antoine Tenart <atenart@...nel.org>
Cc:     Eric Dumazet <edumazet@...gle.com>,
        David Miller <davem@...emloft.net>,
        Paolo Abeni <pabeni@...hat.com>,
        netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next] Documentation: add a description for
 net.core.high_order_alloc_disable

On Wed, 6 Jul 2022 15:24:58 +0200 Eric Dumazet wrote:
> linux-5.14 allowed high-order pages to be stored on the per-cpu lists.
> 
> I ran again the benchmark cited in commit ce27ec60648d to confirm that
> the slowdown we had before 5.14 for
> high number of alloc/frees per second is no more.

Sounds useful to know - Antoine, do you reckon we can include a mention
of this knob being mostly of historical importance?