Date: Mon, 15 Dec 2008 15:35:54 -0500 From: Mike Tancsa <mike@sentex.net> To: Paul MacKenzie <bsdlist@cogeco.ca>, freebsd-stable@freebsd.org Subject: Re: 7.1-PRERELEASE: arcmsr write performance problem Message-ID: <200812152035.mBFKZkj4084689@lava.sentex.ca> In-Reply-To: <4946BDB1.8060208@cogeco.ca> References: <2515BCEE3A2F4CBA8FFB9F1C052924AA@jmlaptop> <4934CB77.30906@transactionware.com> <494698E4.2070406@cogeco.ca> <200812151900.mBFJ0Jom084267@lava.sentex.ca> <4946B6EF.5080806@cogeco.ca> <200812152010.mBFKAlZf084580@lava.sentex.ca> <4946BDB1.8060208@cogeco.ca>
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At 03:27 PM 12/15/2008, Paul MacKenzie wrote: > > What does top -S show ? Most of the load is in system. Does the > > machine in question have a rather large master.passwd file by chance ? > > (http://www.freebsd.org/cgi/query-pr.cgi?pr=75855) > > ---Mike > > >Thanks for your quick reply: > >master.passwd is only 9467 (with a ls-l) I would try the change to /etc/nsswitch.conf so that group and passwd read group: files passwd: files At that file size, it sounds like you only have about 200 entries ? I doubt its the issue, but its worth a try. I know at around 9,000 files anything to do with UID lookups (e.g. ls -l) takes forever. > PID USERNAME VCSW IVCSW READ WRITE FAULT TOTAL PERCENT >COMMAND > 54 root 2 0 0 7 0 7 100.00% syncer Do you have any other special tuning other than polling ? Any in /boot/loader.conf or /etc/sysctl.conf ? Does gstat show the disks busy ? ---Mike
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