linux-kernel - Re: [PATCH 11/13] proc: readdir /proc/*/task

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Message-ID: <20180830132004.GB31422@avx2>
Date:   Thu, 30 Aug 2018 16:20:04 +0300
From:   Alexey Dobriyan <adobriyan@...il.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     "Ahmed S. Darwish" <darwish.07@...il.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 11/13] proc: readdir /proc/*/task

On Wed, Aug 29, 2018 at 04:43:30PM -0700, Andrew Morton wrote:
> On Tue, 28 Aug 2018 22:35:02 +0300 Alexey Dobriyan <adobriyan@...il.com> wrote:
> 
> > > Are we really in a super hot path to justify all that?
> > 
> > /proc is very slow, try profiling just about anything involving /proc.
> 
> So how much does this patchset help?  Some timing measurements would
> really help things along, if they show goodness.

Benchmarking results are in individual patches. They are ~1-7-20%
better overall. However those are microbenchmarks.