From: Andrea Arcangeli <andrea@suse.de>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Andrew Morton <akpm@zip.com.au>, Paul Faure <paul@engsoc.org>,
linux-kernel@vger.kernel.org
Subject: Re: Process priority in 2.4.18 (RedHat 7.3)
Date: Fri, 17 May 2002 16:35:38 +0200 [thread overview]
Message-ID: <20020517143537.GG11512@dualathlon.random> (raw)
In-Reply-To: <20020517125529.GC11512@dualathlon.random> <E178j4i-0006eT-00@the-village.bc.nu>
On Fri, May 17, 2002 at 03:51:20PM +0100, Alan Cox wrote:
> > > For a 10Mbit ne2k it ought to be if its done with sched fifo. For serious
> > > devices its not. The ksoftirqd bounce blows everything out of cache and is
> > > easily measured
> >
> > if you're under a flood of irq ksoftirqd or not won't make differences
>
> I didnt mention a flood of irqs. If stuff falls back to softirqd it
> materially harms throughput
You did implicitly becuse if there's not a flood of irq or recursive
softirqs it cannot fall to sofitrqd.
Andrea
next prev parent reply other threads:[~2002-05-17 14:37 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <3CE414BF.15A0C74B@zip.com.au>
2002-05-16 20:51 ` Process priority in 2.4.18 (RedHat 7.3) Paul Faure
2002-05-16 21:06 ` Andrew Morton
2002-05-16 21:57 ` Andrea Arcangeli
2002-05-17 0:40 ` Paul Faure
2002-05-17 2:21 ` Andrew Morton
2002-05-17 12:49 ` Alan Cox
2002-05-17 12:39 ` Andrea Arcangeli
2002-05-17 13:01 ` Alan Cox
2002-05-17 12:55 ` Andrea Arcangeli
2002-05-17 14:51 ` Alan Cox
2002-05-17 14:35 ` Andrea Arcangeli [this message]
2002-05-17 14:57 ` Alan Cox
2002-05-17 15:17 ` Andrea Arcangeli
2002-05-17 17:17 ` Alan Cox
2002-05-18 16:19 ` Paul Faure
2002-05-18 16:21 ` Paul Faure
2002-05-17 16:21 ` Paul Faure
2002-05-16 20:08 Paul Faure
2002-05-16 20:13 ` Nerijus Baliunas
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