Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750803AbVL3Hmm (ORCPT ); Fri, 30 Dec 2005 02:42:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751204AbVL3Hmm (ORCPT ); Fri, 30 Dec 2005 02:42:42 -0500 Received: from webmail-outgoing2.us4.outblaze.com ([205.158.62.67]:39333 "EHLO webmail-outgoing.us4.outblaze.com") by vger.kernel.org with ESMTP id S1750803AbVL3Hml convert rfc822-to-8bit (ORCPT ); Fri, 30 Dec 2005 02:42:41 -0500 X-OB-Received: from unknown (205.158.62.232) by wfilter.us4.outblaze.com; 30 Dec 2005 07:42:41 -0000 Content-Disposition: inline Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII MIME-Version: 1.0 From: "Kai Geek" To: linux-kernel@vger.kernel.org Date: Fri, 30 Dec 2005 15:42:41 +0800 Subject: Re: Latency traces I cannot interpret (sa1100, 2.6.15-rc7-rt1) X-Originating-Ip: 194.125.232.2 X-Originating-Server: ws5-11.us4.outblaze.com Message-Id: <20051230074241.41333CA0A3@ws5-11.us4.outblaze.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2251 Lines: 53 Hello, i am inframed trace for irq14 bugging points. > * Lee Revell wrote: > > It seems that either some code path really is forgetting to > > re-enable interrupts, or there's a bug in the latency tracer. > one question is, what do the kernel addresses visible in the first > argument of asm_do_IRQ() correspond to: > trace1:MyThread-153 0D..1 5977us+: asm_do_IRQ (c030c170 1a 0) > trace1:MyThread-153 0D..1 15191us+: asm_do_IRQ (c030c1bc 1a 0) > trace2: -0 0D..2 8822us+: asm_do_IRQ (c021da24 1a 0) > trace2: -0 0Dn.2 8920us+: asm_do_IRQ (c021da24 b 0) > trace3: top-169 0D..1 8802us+: asm_do_IRQ (c024e5fc 1a 0) > trace4: insmod-185 0D..1 8794us+: asm_do_IRQ (c030c174 1a 0) > trace5: dd-197 0D..1 8812us+: asm_do_IRQ (c02e4938 1a 0) > trace6: kthread-11 0d..3 2670us+: asm_do_IRQ (c02fe2d0 1a 0) > trace7:MyThread-95 0D..1 542us+: asm_do_IRQ (c02fe2d0 1a 0) > trace7:MyThread-95 0D..1 9755us+: asm_do_IRQ (c02fe2d0 1a 0) > i.e. what is c02fe2d0, c021da24, c02e4938, etc.? > but it seems most of the latencies are printk related: one possibility > is that something is doing a costly printk with preemption disabled. > Ingo > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ +-+-+-+ BEGIN PGP SIGNATURE +-+-+-+ Version: GnuPG v1.4.2 (GNU/Linux) .-. .-. _ : : : : :_; .-' : .--. : `-. .-. .--. ,-.,-. ' .; :' '_.'' .; :: :' .; ; : ,. : `.__.'`.__.'`.__.':_;`.__,_;:_;:_; Kai "Ozgur" Geek Network Engineer PGP ID: B1B63B6E +-+-+-+ END PGP SIGNATURE +-+-+-+ -- _______________________________________________ Check out the latest SMS services @ http://www.linuxmail.org This allows you to send and receive SMS through your mailbox. Powered by Outblaze - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/