linux-kernel - Re: [PATCH 1/2] perf ftrace latency: variable histogram buckets

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] [day] [month] [year] [list]

Message-Id: <174067502605.1401960.295346748722727301.b4-ty@kernel.org>
Date: Thu, 27 Feb 2025 08:50:26 -0800
From: Namhyung Kim <namhyung@...nel.org>
To: linux-kernel@...r.kernel.org, 
 Arnaldo Carvalho de Melo <acme@...nel.org>, 
 linux-perf-users@...r.kernel.org, bpf@...r.kernel.org, 
 Gabriele Monaco <gmonaco@...hat.com>
Subject: Re: [PATCH 1/2] perf ftrace latency: variable histogram buckets

On Fri, 07 Feb 2025 09:04:44 +0100, Gabriele Monaco wrote:
> The max-latency value can make the histogram smaller, but not larger, we
> have a maximum of 22 buckets and specifying a max-latency that would
> require more buckets has no effect.
> 
> Dynamically allocate the buckets and compute the bucket number from the
> max latency as (max-min) / range + 2
> 
> [...]
Applied to perf-tools-next, thanks!

Best regards,
Namhyung