From: William Lee Irwin III <wli@holomorphy.com>
To: David Lang <dlang@diginsite.com>
Cc: Till Immanuel Patzschke <tip@inw.de>,
lse-tech <lse-tech@lists.sourceforge.net>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: 15000+ processes -- poor performance ?!
Date: Wed, 18 Dec 2002 17:25:49 -0800 [thread overview]
Message-ID: <20021219012549.GK31800@holomorphy.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0212181711200.7848-100000@dlang.diginsite.com>
On Wed, Dec 18, 2002 at 05:12:41PM -0800, David Lang wrote:
> also top is very inefficant with large numbers of processes. use vmstat
> or cat out the files in /proc to get the info more efficiantly (it won't
> get you per process info, but it son't cause the interferance with your
> desired load that top gives you.)
It's mostly just the fact top(1) doesn't scan /proc/ incrementally and
that proc_pid_readdir() is quadratic in the number of tasks.
Bill
next prev parent reply other threads:[~2002-12-19 1:19 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-19 0:46 15000+ processes -- poor performance ?! Till Immanuel Patzschke
2002-12-19 0:47 ` [Lse-tech] " Martin J. Bligh
2002-12-19 0:53 ` Till Immanuel Patzschke
2002-12-19 1:15 ` William Lee Irwin III
2002-12-19 1:12 ` David Lang
2002-12-19 1:25 ` William Lee Irwin III [this message]
2002-12-19 1:20 ` David Lang
2002-12-19 1:36 ` William Lee Irwin III
2002-12-19 1:42 ` Robert Love
2002-12-19 1:44 ` David Lang
2002-12-19 2:05 ` [Lse-tech] " William Lee Irwin III
2002-12-19 15:05 ` Denis Vlasenko
2002-12-19 10:27 ` William Lee Irwin III
2002-12-19 10:37 ` Alex Tomas
2002-12-19 10:55 ` William Lee Irwin III
2002-12-19 15:24 ` Martin J. Bligh
2002-12-19 15:15 ` Denis Vlasenko
2002-12-19 1:24 ` William Lee Irwin III
2002-12-19 0:59 ` Jeff Garzik
2002-12-19 1:11 ` William Lee Irwin III
2002-12-19 14:59 ` Denis Vlasenko
-- strict thread matches above, loose matches on Subject: below --
2002-12-19 1:04 Perez-Gonzalez, Inaky
2002-12-19 1:13 ` Robert Love
2002-12-19 2:31 ` Alan Cox
2002-12-19 1:58 ` Rik van Riel
2002-12-19 2:01 ` William Lee Irwin III
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20021219012549.GK31800@holomorphy.com \
--to=wli@holomorphy.com \
--cc=dlang@diginsite.com \
--cc=linux-kernel@vger.kernel.org \
--cc=lse-tech@lists.sourceforge.net \
--cc=tip@inw.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.