Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262183AbUKKHdv (ORCPT ); Thu, 11 Nov 2004 02:33:51 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262184AbUKKHdv (ORCPT ); Thu, 11 Nov 2004 02:33:51 -0500 Received: from smtp209.mail.sc5.yahoo.com ([216.136.130.117]:50366 "HELO smtp209.mail.sc5.yahoo.com") by vger.kernel.org with SMTP id S262183AbUKKHdr (ORCPT ); Thu, 11 Nov 2004 02:33:47 -0500 Message-ID: <419315D7.9070308@yahoo.com.au> Date: Thu, 11 Nov 2004 18:33:43 +1100 From: Nick Piggin User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.2) Gecko/20040820 Debian/1.7.2-4 X-Accept-Language: en MIME-Version: 1.0 To: "Prakash K. Cheemplavam" CC: Bill Davidsen , linux-kernel@vger.kernel.org Subject: Re: [2.6.10-rc1 and prev] System unuseable while writing to disk References: <418FE968.4030300@gmx.de> <41927019.9050508@tmr.com> <41930F9C.8010308@gmx.de> In-Reply-To: <41930F9C.8010308@gmx.de> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2984 Lines: 75 Prakash K. Cheemplavam wrote: > 100 0 > 0 0 0 774876 14532 136460 0 0 0 0 1180 436 1 0 > 99 0 > 1 1 0 571740 14732 333736 0 0 32 42628 1325 633 3 43 > 52 2 > 2 2 0 217812 15072 676648 0 0 0 45184 1523 1771 14 > 78 0 8 > 1 2 0 220436 15072 676648 0 0 0 49664 1582 1365 9 6 > 0 85 > 0 2 0 85460 15984 808012 0 0 164 73984 1487 1143 18 > 32 0 49 > 0 1 0 85716 15984 808140 0 0 0 29056 1493 1381 4 6 > 0 90 > 0 1 0 86100 15984 808140 0 0 0 40320 1420 1367 3 2 > 0 95 > 0 1 0 86100 15984 808140 0 0 0 44416 1386 693 0 2 > 0 98 > 0 1 0 86100 15984 808140 0 0 0 50304 1518 1413 5 6 > 0 89 > 0 1 0 86164 15984 808140 0 0 0 28544 1452 827 1 2 > 0 97 > 0 1 0 86292 15984 808140 0 0 0 35840 1386 809 1 2 > 0 97 > 0 1 0 86356 15984 808140 0 0 0 37376 1450 1373 3 3 > 0 94 > procs -----------memory---------- ---swap-- -----io---- --system-- > ----cpu---- > r b swpd free buff cache si so bi bo in cs us sy > id wa > 1 1 0 86484 15984 808140 0 0 0 42880 1752 2494 7 6 > 0 87 > 0 1 0 86484 15984 808140 0 0 0 31872 1608 2098 7 4 > 0 89 > 0 1 0 86484 15984 808140 0 0 0 45952 1530 795 1 2 > 0 97 > 0 1 0 86484 15984 808140 0 0 0 44288 1515 814 0 3 > 0 97 > 0 1 0 90580 15984 808140 0 0 0 29052 1471 1365 5 5 > 0 90 > 1 0 0 90148 16108 809356 0 0 976 2088 1383 1319 22 > 11 0 67 > 0 0 0 90148 16108 809360 0 0 4 16 1444 833 10 5 > 84 1 > 0 0 0 90148 16108 809360 0 0 0 0 1256 473 0 0 > 100 0 > 0 0 0 90148 16108 809360 0 0 0 0 1379 611 3 1 > 96 0 > 0 0 0 90148 16108 809360 0 0 0 0 1526 2439 16 5 > 79 0 > 0 0 0 90148 16164 809360 0 0 0 120 1563 1824 16 4 > 80 0 > > > Beginning and end the system is idle and then I start writing down the > file. During that time thunderbird gets unusable. > It looks like it may be a CPU scheduler issue: Nothing needs to be read, no swap activity, enough free memory. However, it also does look like there is a lot of CPU power free, which makes the cpu scheduler less likely... Maybe interrupts are using a lot of CPU time or latency, and that is being hidden from CPU time accounting. I think Ingo did notice quite large latencies in disk interrupts, although whether that would be enough to make thunderbird "unusable", I'm not sure. - 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/