From: storm@cua.dk (Kim F. Storm)
Cc: Eric Hanchrow <offby1@blarg.net>, emacs-devel@gnu.org
Subject: Re: Fix for slow process output processing (please test).
Date: 06 Jan 2004 01:09:34 +0100 [thread overview]
Message-ID: <m3d69y7xa9.fsf@kfs-l.imdomain.dk> (raw)
In-Reply-To: <x5n09257sz.fsf@lola.goethe.zz>
David Kastrup <dak@gnu.org> writes:
> storm@cua.dk (Kim F. Storm) writes:
>
> > David Kastrup <dak@gnu.org> writes:
> >
> > > storm@cua.dk (Kim F. Storm) writes:
> > >
> > > > I suppose that process-adaptive-read-buffering isn't really needed
> > > > on Windows,
> > >
> > > Since Windows is slow, anyway?
> >
> > Because the purpose of my patch was to fix a problem reported to be
> > specific for recent Linux kernels.
>
> Not just recent ones. They may have parameters acerbating the
> problem, but it has always been there. IIRC, the same effect was
> reported from FreeBSD; and I think it likely that almost all operating
> systems that proud themselves on high throughput and good
> interactivity and fast context switches will suffer from the same
> phenomenon when running on single processor machines, as long as they
> are able to reschedule the moment input arrives in a pipe. You need
> pretty wild scheduler strategies (like "anticipative scheduling") in
> order to avoid this effect.
I see -- and agree.
BTW, did you try to increase the buffer size?
--
Kim F. Storm <storm@cua.dk> http://www.cua.dk
prev parent reply other threads:[~2004-01-06 0:09 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-16 1:21 Fix for slow process output processing (please test) Kim F. Storm
2003-12-16 2:14 ` David Kastrup
2003-12-16 3:34 ` David Kastrup
2003-12-16 10:23 ` Kim F. Storm
2003-12-16 11:51 ` David Kastrup
2003-12-16 13:24 ` Kim F. Storm
2004-01-03 15:12 ` David Kastrup
2004-01-04 23:00 ` Kim F. Storm
2004-01-03 22:07 ` Eric Hanchrow
2004-01-04 22:42 ` Kim F. Storm
2004-01-05 15:57 ` David Kastrup
2004-01-05 19:09 ` Eli Zaretskii
2004-01-05 19:39 ` David Kastrup
2004-01-05 19:52 ` Jason Rumney
2004-01-05 23:28 ` Kim F. Storm
2004-01-05 23:16 ` Jason Rumney
2004-01-05 23:44 ` David Kastrup
2004-01-06 0:23 ` Jason Rumney
2004-01-07 0:40 ` Kim F. Storm
2004-01-05 23:35 ` Kim F. Storm
2004-01-05 22:50 ` David Kastrup
2004-01-06 0:09 ` Kim F. Storm [this message]
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