From: Rik van Riel <riel@surriel.com>
To: Gargi Sharma <gs051095@gmail.com>,
"Eric W. Biederman" <ebiederm@xmission.com>
Cc: linux-kernel@vger.kernel.org, Julia Lawall <julia.lawall@lip6.fr>,
akpm@linux-foundation.org, mingo@kernel.org,
pasha.tatashin@oracle.com, ktkhai@virtuozzo.com,
Oleg Nesterov <oleg@redhat.com>
Subject: Re: [PATCH v2 0/2] Replace PID bitmap allocation with IDR API
Date: Thu, 28 Sep 2017 15:46:53 -0400 [thread overview]
Message-ID: <1506628013.21121.104.camel@surriel.com> (raw)
In-Reply-To: <CAOCi2DESqWV2YPcRTe6NYjx6m6N19ewXbAyfLfeBa23kJiEO9Q@mail.gmail.com>
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On Fri, 2017-09-29 at 01:09 +0530, Gargi Sharma wrote:
> 1000 processes that just sleep and sit around without doing
> anything(100 second sleep and then exit).
>
> pstree with 10,000 processes
> real 0m0.859s
> user 0m0.536s
> sys 0m0.172s
>
> ps with 10,000 processes
> real 0m0.918s
> user 0m0.100s
> sys 0m0.172s
>
> Stats for calling readdir on /proc with 10,000 processes
> real 0m0.092s
> user 0m0.000s
> sys 0m0.020s
Is that with or without your patches?
How does it compare to a kernel with(out) your patches?
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next prev parent reply other threads:[~2017-09-28 19:47 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-27 5:06 [PATCH v2 0/2] Replace PID bitmap allocation with IDR API Gargi Sharma
2017-09-27 5:06 ` [PATCH v2 1/2] pid: Replace pid bitmap implementation " Gargi Sharma
2017-09-27 13:09 ` Rik van Riel
2017-09-27 14:06 ` Oleg Nesterov
2017-09-27 15:06 ` Gargi Sharma
2017-09-27 15:15 ` Oleg Nesterov
2017-09-27 15:05 ` Gargi Sharma
2017-09-27 15:05 ` Oleg Nesterov
2017-10-01 9:15 ` Christoph Hellwig
2017-10-01 10:35 ` Gargi Sharma
2017-10-02 13:14 ` Rik van Riel
2017-10-02 13:05 ` Rik van Riel
2017-09-27 5:06 ` [PATCH v2 2/2] pid: Remove pidhash Gargi Sharma
2017-09-27 15:45 ` Oleg Nesterov
2017-09-27 16:28 ` Oleg Nesterov
2017-09-30 15:41 ` Gargi Sharma
2017-10-02 15:03 ` Oleg Nesterov
2017-10-02 13:35 ` Rik van Riel
2017-10-02 13:45 ` Rik van Riel
2017-10-02 15:21 ` Oleg Nesterov
2017-10-02 15:22 ` Rik van Riel
2017-10-02 16:27 ` Gargi Sharma
2017-09-27 17:18 ` [PATCH v2 0/2] Replace PID bitmap allocation with IDR API Eric W. Biederman
[not found] ` <CAOCi2DESqWV2YPcRTe6NYjx6m6N19ewXbAyfLfeBa23kJiEO9Q@mail.gmail.com>
2017-09-28 19:46 ` Rik van Riel [this message]
2017-09-28 20:05 ` Gargi Sharma
2017-09-29 0:35 ` Rik van Riel
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