From: Doug McNaught <doug@wireboard.com>
To: Aaron Sethman <androsyn@ratbox.org>
Cc: Darren Smith <data@barrysworld.com>,
"'Andrew Morton'" <akpm@zip.com.au>,
"'Dan Kegel'" <dank@kegel.com>,
"'Vincent Sweeney'" <v.sweeney@barrysworld.com>,
<linux-kernel@vger.kernel.org>, <coder-com@undernet.org>,
"'Kevin L. Mitchell'" <klmitch@mit.edu>
Subject: Re: [Coder-Com] Re: PROBLEM: high system usage / poor SMP network performance
Date: 04 Feb 2002 13:53:20 -0500 [thread overview]
Message-ID: <m3r8o16pun.fsf@varsoon.denali.to> (raw)
In-Reply-To: <Pine.LNX.4.44.0202041327420.4584-100000@simon.ratbox.org>
In-Reply-To: Aaron Sethman's message of "Mon, 4 Feb 2002 13:30:40 -0500 (EST)"
Aaron Sethman <androsyn@ratbox.org> writes:
> On Mon, 4 Feb 2002, Darren Smith wrote:
>
> > I mean I added a usleep() before the poll in s_bsd.c for the undernet
> > 2.10.10 code.
> Why not just add the additional delay into the poll() timeout? It just
> seems like you were not doing enough of a delay in poll().
No, because the poll() delay only has an effect if there are no
readable fd's. What the usleep() does is allow time for more fd's to
become readable/writeable before poll() is called, spreading the
poll() overhead over more actual work.
-Doug
--
Let us cross over the river, and rest under the shade of the trees.
--T. J. Jackson, 1863
next prev parent reply other threads:[~2002-02-04 18:54 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-29 18:00 Dan Kegel
2002-01-29 20:09 ` Vincent Sweeney
2002-01-31 5:24 ` Dan Kegel
[not found] ` <001d01c1aa8e$2e067e60$0201010a@frodo>
2002-02-03 8:03 ` Dan Kegel
2002-02-03 8:36 ` Andrew Morton
2002-02-04 14:57 ` [Coder-Com] " Darren Smith
2002-02-04 17:41 ` Aaron Sethman
2002-02-04 18:11 ` Darren Smith
2002-02-04 18:30 ` Aaron Sethman
2002-02-04 18:48 ` Kev
2002-02-04 18:59 ` Aaron Sethman
2002-02-04 18:53 ` Doug McNaught [this message]
2002-02-08 22:11 ` James Antill
2002-02-12 18:48 ` Vincent Sweeney
2002-02-03 19:22 ` Kev
[not found] ` <5.1.0.14.2.20020203173247.02c946e8@pop.euronet.nl>
2002-02-03 19:16 ` [Coder-Com] Re: PROBLEM: high system usage / poor SMPnetwork performance Dan Kegel
2002-02-04 0:07 ` Kev
2002-02-04 0:37 ` Dan Kegel
2002-02-04 0:59 ` Aaron Sethman
2002-02-04 1:16 ` Dan Kegel
2002-02-04 1:30 ` Aaron Sethman
2002-02-04 1:38 ` Dan Kegel
2002-02-04 4:38 ` Aaron Sethman
2002-02-04 5:35 ` Dan Kegel
2002-02-04 5:43 ` Aaron Sethman
2002-02-04 6:11 ` Daniel Phillips
2002-02-04 6:26 ` Aaron Sethman
2002-02-04 6:29 ` Daniel Phillips
2002-02-04 6:39 ` Aaron Sethman
2002-02-04 2:55 ` Kev
2002-02-04 3:25 ` Dan Kegel
2002-02-04 4:47 ` Aaron Sethman
2002-02-04 5:10 ` Kev
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