From: Jamie Lokier <lk@tantalophile.demon.co.uk>
To: Ingo Molnar <mingo@elte.hu>
Cc: Andi Kleen <ak@muc.de>, Richard Zidlicky <rz@linux-m68k.org>,
Jeff Dike <jdike@karaya.com>, Alan Cox <alan@redhat.com>,
linux-kernel@vger.kernel.org
Subject: Re: context switch vs. signal delivery [was: Re: Accelerating user mode linux]
Date: Mon, 5 Aug 2002 16:41:26 +0100 [thread overview]
Message-ID: <20020805164126.D7130@kushida.apsleyroad.org> (raw)
In-Reply-To: <Pine.LNX.4.44.0208051223430.8173-100000@localhost.localdomain>; from mingo@elte.hu on Mon, Aug 05, 2002 at 12:40:54PM +0200
Ingo Molnar wrote:
> And threads can do queued events that amortizes context switch
> overhead, while queued signals generate per-event signal delivery, so
> signal delivery costs are not amortized.
>
> (Not that i advocate SIGIO or helper threads for highperformance IO -
> Ben's aio interface is the fastest and most correct approach.)
Isn't the per-event queued signal cost amortised when using sigwaitinfo()?
-- Jamie
next prev parent reply other threads:[~2002-08-05 15:39 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-01 20:16 Accelerating user mode linux Alan Cox
2002-08-02 4:40 ` Jeff Dike
2002-08-02 9:50 ` Alan Cox
2002-08-02 18:28 ` Jeff Dike
2002-08-02 17:48 ` Alan Cox
2002-08-02 22:33 ` Jeff Dike
2002-08-02 21:57 ` Alan Cox
2002-08-03 0:54 ` Jeff Dike
2002-08-02 11:34 ` Richard Zidlicky
2002-08-02 13:28 ` Alan Cox
2002-08-03 11:38 ` context switch vs. signal delivery [was: Re: Accelerating user mode linux] Ingo Molnar
2002-08-03 12:33 ` context switch vs. signal delivery [was: Re: Accelerating user mode Alan Cox
2002-08-03 15:29 ` Jeff Dike
2002-08-05 13:46 ` Udo A. Steinberg
2002-08-05 20:44 ` Richard Zidlicky
2002-08-05 22:34 ` Udo A. Steinberg
2002-08-06 0:42 ` Jeff Dike
2002-08-06 0:16 ` Udo A. Steinberg
2002-08-06 2:55 ` Jeff Dike
2002-08-06 8:10 ` Udo A. Steinberg
2002-08-06 11:20 ` Jeff Dike
2002-08-06 11:13 ` Udo A. Steinberg
2002-08-06 12:53 ` Jeff Dike
2002-08-06 13:04 ` Udo A. Steinberg
2002-08-06 14:12 ` Jeff Dike
2002-08-06 16:02 ` Udo A. Steinberg
2002-08-06 17:42 ` Jeff Dike
2002-08-06 18:01 ` Udo A. Steinberg
2002-08-08 1:27 ` Udo A. Steinberg
2002-08-08 3:14 ` Jeff Dike
2002-08-08 2:21 ` Benjamin LaHaise
2002-08-08 9:03 ` Udo A. Steinberg
2002-08-08 17:19 ` Jeff Dike
2002-08-05 22:06 ` Martin Waitz
2002-08-06 0:49 ` Jeff Dike
2002-08-04 6:46 ` context switch vs. signal delivery [was: Re: Accelerating user mode linux] Andi Kleen
2002-08-05 5:35 ` Linus Torvalds
2002-08-05 5:42 ` Arnaldo Carvalho de Melo
2002-08-05 6:37 ` Lincoln Dale
2002-08-05 15:39 ` Jamie Lokier
2002-08-05 16:38 ` Linus Torvalds
2002-08-05 20:01 ` context switch vs. signal delivery [was: Re: Accelerating usermode linux] Oliver Neukum
2002-08-05 20:23 ` Linus Torvalds
2002-08-06 5:31 ` context switch vs. signal delivery [was: Re: Accelerating user mode linux] Mark Mielke
2002-08-05 10:40 ` Ingo Molnar
2002-08-05 14:59 ` Larry McVoy
2002-08-05 15:41 ` Jamie Lokier [this message]
2002-08-05 15:44 ` Jamie Lokier
[not found] <1028294887.18635.71.camel@irongate.swansea.linux.org.uk.suse.lists.linux.kernel>
[not found] ` <Pine.LNX.4.44.0208031332120.7531-100000@localhost.localdomain.suse.lists.linux.kernel>
[not found] ` <m3u1mb5df3.fsf@averell.firstfloor.org.suse.lists.linux.kernel>
[not found] ` <ail2qh$bf0$1@penguin.transmeta.com.suse.lists.linux.kernel>
2002-08-05 8:38 ` Andi Kleen
2002-08-05 14:24 ` Jeff Dike
2002-08-05 16:19 ` Linus Torvalds
[not found] <20020805163910.C7130@kushida.apsleyroad.org.suse.lists.linux.kernel>
[not found] ` <Pine.LNX.4.44.0208050922570.1753-100000@home.transmeta.com.suse.lists.linux.kernel>
2002-08-05 16:46 ` Andi Kleen
2002-08-05 21:30 ` Jamie Lokier
2002-08-05 21:35 ` Andi Kleen
2002-08-05 22:09 ` Jamie Lokier
2002-08-05 22:16 ` Andi Kleen
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