From: Kev <klmitch@MIT.EDU>
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: Mon, 04 Feb 2002 13:48:21 -0500 [thread overview]
Message-ID: <200202041848.NAA04094@coleco-sidewinder.mit.edu> (raw)
In-Reply-To: Your message of "Mon, 04 Feb 2002 13:30:40 EST." <Pine.LNX.4.44.0202041327420.4584-100000@simon.ratbox.org>
> > I mean I added a usleep() before the poll in s_bsd.c for the undernet
> > 2.10.10 code.
> >
> > timeout = (IRCD_MIN(delay2, delay)) * 1000;
> > + usleep(100000); <- New Line
> > nfds = poll(poll_fds, pfd_count, timeout);
> 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().
Wouldn't have the effect. The original point was that adding the usleep()
gives some time for some more file descriptors to become ready before calling
poll(), thus increasing the number of file descriptors poll() can return
per system call. Adding the time to timeout would have no effect.
--
Kevin L. Mitchell <klmitch@mit.edu>
next prev parent reply other threads:[~2002-02-04 18:49 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 [this message]
2002-02-04 18:59 ` Aaron Sethman
2002-02-04 18:53 ` Doug McNaught
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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