Date: Fri, 07 Dec 2007 12:40:42 +0700 From: Eugene Grosbein <eugen@kuzbass.ru> To: Jeremy Chadwick <koitsu@FreeBSD.org> Cc: Patrick van Iersel <pviersel@office.caiw.nl>, freebsd-stable@FreeBSD.org Subject: Re: Extreme load with local password db lookups Message-ID: <4758DCDA.ED9F0C56@kuzbass.ru> References: <C37D8F8E.39687%pviersel@office.caiw.nl> <20071206112207.GA74486@svzserv.kemerovo.su> <20071206114046.GA78813@eos.sc1.parodius.com>
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Jeremy Chadwick wrote: > > > Here's the situation. We have an web/ftp server with around 74000 users > > > defined in the local unix password database. On 4.9-stable which it is > > > running now, there is no noticable load when lookups are done (logins via > > > ftp, ~user lookups from apache etc.). We want to migrate this system to > > > 6-stable. > > > However on 6-STABLE (FreeBSD 6.3-PRERELEASE #0: Wed Dec 5 13:35:05 CET > > > 2007) these same lookups cause very high load and things slow down to a > > > crawl. > > > > > > Does anybody have an idea what causes this behavior? > > > > > > Thanx in advance for any insights. > > > > Take a look to your /etc/nsswitch.conf. If you do not use NIS, > > try to change lines for 'group' and 'passwd' to look like this: > > > > group: files > > passwd: files > > The default value is "compat" on both RELENG_6 and RELENG_7. I don't > think switching to "files" will fix his problem (I'll be very surprised > if it does). See http://www.freebsd.org/cgi/query-pr.cgi?pr=75855 It seems the regression from RELENG_4 is still here. There are so many regressions in performance that I still prefer to invest time to patch bsd.ports.mk to support 4.x (and have a success, I use fresh ports with 4.x these days) then upgrade my UP boxes to 6.x and suffer from loss of performaince. Eugene Grosbeinhome | help
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