From: William Lee Irwin III <wli@holomorphy.com>
To: David Lang <david.lang@digitalinsight.com>
Cc: Robert Love <rml@tech9.net>, Till Immanuel Patzschke <tip@inw.de>,
lse-tech <lse-tech@lists.sourceforge.net>,
linux-kernel@vger.kernel.org
Subject: Re: [Lse-tech] Re: 15000+ processes -- poor performance ?!
Date: Wed, 18 Dec 2002 18:05:52 -0800 [thread overview]
Message-ID: <20021219020552.GO31800@holomorphy.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0212181743350.7848-100000@dlang.diginsite.com>
On Wed, Dec 18, 2002 at 05:44:46PM -0800, David Lang wrote:
> In my case I will still be running thousands of processes, so I have to
> just teach everyone not to use top instead.
> David Lang
Well, a better solution would be a userspace free of /proc/ dependency.
Or actually fixing the kernel. proc_pid_readdir() wants an efficiently
indexable linear list, e.g. TAOCP's 6.2.3 "Linear List Representation".
At that point its expense is proportional to the buffer size and
"seeking" about the list as it is wont to do is O(lg(processes)).
Bill
next prev parent reply other threads:[~2002-12-19 1:59 UTC|newest]
Thread overview: 21+ 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
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 ` William Lee Irwin III [this message]
2002-12-19 15:05 ` [Lse-tech] " 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
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