Date: Thu, 07 Feb 2008 19:10:13 +0100 From: Frank Staals <frankstaals@gmx.net> To: doug@fledge.watson.org Cc: Jerry McAllister <jerrymc@msu.edu>, FreeBSD <freebsd-questions@freebsd.org> Subject: Re: buildworld releng7 exterme performance loss Message-ID: <47AB4985.7040607@gmx.net> In-Reply-To: <20080206144920.G12870@fledge.watson.org> References: <47A3720D.1080702@gmx.net> <47AA08E8.1020502@gmx.net> <20080206193916.GA20244@gizmo.acns.msu.edu> <20080206144920.G12870@fledge.watson.org>
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doug@safeport.com wrote: > On Wed, 6 Feb 2008, Jerry McAllister wrote: >> Sounds like the system is spending a lot of time waiting for some >> resource - I don't know which one[s]. >> >> Have you perused the system logs? Can you be running out of memory >> or swap space? Is the system built with debugging turned on? >> >> I'm not sure what else to suggest. >> ////jerry >> > if you have not already done so turn on all.log (see etc/syslog.conf) > <message snipped> As suggested I turned on all.log and also captured the output from vmstat -i and top -S as 2 others suggested. From the all.log output I don't seem to see anything out of the ordinary if I compare it to a snapshot of all.log on my working environment but maybe I am looking for the wrong thing ? The same applies for the output of top -S. vmstat's output may be more interesting though. In both cases I the information was taken just after boot with a login on tty0 and 1 remote session. vmstat shows the amount of interrupts for my network interfaces are a lot higher with todays build compared to my working env from 3 weeks ago. There is one difference though: I did a rm -rf /usr/obj/* through ssh on the todays build. Could that be the reason for the difference or did I find the source of the problem ? info : all.log todays build : http://fstaals.net/junk/rena/all.log.2008.07.02.1140 working env: http://fstaals.net/junk/rena/all.log.stable top -S output (links so the output is still properly formatted ) todays build: http://fstaals.net/junk/rena/top working env: http://fstaals.net/junk/rena/top_stable vmstat -i on todays build: frank@Rena# cat /root/vmstat interrupt total rate irq1: atkbd0 610 2 irq9: acpi0 1 0 irq12: psm0 6 0 irq14: ata0 58 0 irq17: wpi0 bge0+ 151862 706 irq19: cbb0+ 2 0 irq20: uhci0 uhci+ 1 0 irq21: pcm0 uhci1+ 8 0 irq22: ehci0 uhci4 5 0 cpu0: timer 179565 835 cpu1: timer 169770 789 Total 501888 2334 frank@Rena# cat /root/vmstat_stable interrupt total rate irq1: atkbd0 130 1 irq9: acpi0 1 0 irq14: ata0 58 0 irq17: wpi0 bge0+ 3544 44 irq19: cbb0+ 2 0 irq20: uhci0 uhci+ 1 0 irq21: pcm0 uhci1+ 7 0 irq22: ehci0 uhci4 5 0 cpu0: timer 155701 1946 cpu1: timer 145928 1824 Total 305377 3817 -- -Frank Staals
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