Date: Fri, 8 Feb 2002 05:50:01 -0800 (PST) From: "Craig Stratton" <craig@avnet.co.uk> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/34711: frequent system stall under moderate scsi load Message-ID: <200202081350.g18Do1j47969@freefall.freebsd.org>
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The following reply was made to PR kern/34711; it has been noted by GNATS. From: "Craig Stratton" <craig@avnet.co.uk> To: "David Malone" <dwmalone@maths.tcd.ie> Cc: <freebsd-gnats-submit@freebsd.org> Subject: Re: kern/34711: frequent system stall under moderate scsi load Date: Fri, 8 Feb 2002 13:40:41 -0000 David had top running and it froze up with this:- last pid: 28865; load averages: 29.69, 45.35, 74.62325 up 0+23:26:24 13:27:02 150 processes: 59 running, 86 sleeping, 5 zombie CPU states: 49.3% user, 0.0% nice, 31.2% system, 1.3% interrupt, 18.3% idle Mem: 35M Active, 5752K Inact, 18M Wired, 116K Cache, 14M Buf, 404K Free Swap: 256M Total, 86M Used, 170M Free, 33% Inuse, 12M In, 25M Out PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND 28782 nobody -14 0 5172K 1432K inode 0:03 1.91% 1.90% perl 28757 nobody -2 0 5248K 1224K getblk 0:07 1.56% 1.56% perl 28780 nobody -14 0 5216K 1300K inode 0:04 1.56% 1.56% perl 28733 nobody -6 0 5296K 1240K biord 0:09 1.51% 1.51% perl 28761 nobody -2 0 5244K 1260K getblk 0:06 1.46% 1.46% perl 28793 nobody -14 0 5208K 1292K inode 0:04 1.47% 1.46% perl 28731 nobody -14 0 5296K 1232K inode 0:09 1.37% 1.37% perl 28743 nobody -6 0 5248K 1240K biord 0:08 1.32% 1.32% perl 28758 nobody -6 0 7248K 1316K biord 0:07 1.32% 1.32% perl 28773 nobody -6 0 5244K 1324K biord 0:05 1.27% 1.27% perl 28788 nobody -6 0 5172K 1328K biord 0:04 1.22% 1.22% perl and then started and stopped again with this last pid: 28911; load averages: 42.13, 44.43, 70.22325 up 0+23:28:56 13:29:34 185 processes: 94 running, 84 sleeping, 7 zombie CPU states: 42.2% user, 0.0% nice, 33.8% system, 1.5% interrupt, 22.5% idle Mem: 35M Active, 5556K Inact, 19M Wired, 72K Cache, 14M Buf, 404K Free Swap: 256M Total, 107M Used, 148M Free, 41% Inuse, 36M In, 51M Out PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND 28780 nobody -18 0 5296K 1368K RUN 0:09 4.83% 4.83% perl 28782 nobody -18 0 5244K 1280K RUN 0:08 4.35% 4.35% perl 28793 nobody -18 0 5292K 1360K RUN 0:09 4.30% 4.30% perl 28794 nobody -18 0 5292K 1356K RUN 0:09 4.30% 4.30% perl 28764 nobody -18 0 5292K 1272K RUN 0:11 4.05% 4.05% perl 28788 nobody -18 0 5244K 1280K RUN 0:08 3.81% 3.81% perl 28773 nobody -18 0 5292K 1368K RUN 0:10 3.47% 3.47% perl 17390 root -18 0 2092K 404K RUN 8:41 1.29% 0.88% top 28903 nobody -18 0 2808K 1856K RUN 0:01 0.79% 0.78% perl 28892 nobody -18 0 2884K 2100K RUN 0:01 0.59% 0.59% perl 28881 nobody -18 0 2756K 1728K RUN 0:01 0.44% 0.44% perl 28907 nobody -18 0 1924K 1260K RUN 0:00 0.51% 0.44% perl 28908 nobody -18 0 1776K 1108K RUN 0:00 0.17% 0.15% perl 28898 nobody -18 0 2856K 1756K RUN 0:01 0.10% 0.10% perl 28899 nobody -18 0 2644K 1656K RUN 0:01 0.10% 0.10% perl 28904 nobody -18 0 2368K 1680K RUN 0:01 0.10% 0.10% perl 28800 nobody -18 0 3972K 1924K RUN 0:02 0.88% 0.88% perl data centre guys dont have console to put onto it.!? :( Regards Craig ----- Original Message ----- From: "David Malone" <dwmalone@maths.tcd.ie> To: "Craig Stratton" <craig@avnet.co.uk> Sent: Friday, February 08, 2002 10:47 AM Subject: Re: kern/34711: frequent system stall under moderate scsi load > > Is there anything in particular i should look out for or check ? > > If you watch the "state" field in top it will tell you where in the > kernel processes are waiting - this can be a good clue. You can > some times get the same information about the current process by > pressing control-T. > > If you need to get the data center guys to press the reset button > you could ask them if there are any messages on the console. > > If you follow up with any info you get and cc > freebsd-gnats-submit@freebsd.org then you'll have a reasonable chance > of someone spotting something useful. > > David. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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