Date: Tue, 10 Apr 2007 19:24:53 -0500 From: Scott Lambert <lambert@lambertfam.org> To: freebsd-stable@freebsd.org Subject: Re: uid/gid lookups slower on 6.2 than 4.x? Message-ID: <20070411002453.GC13500@sysmon.tcworks.net> In-Reply-To: <200704110206.08099.max@love2party.net> References: <20070410231942.GB13500@sysmon.tcworks.net> <200704110206.08099.max@love2party.net>
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On Wed, Apr 11, 2007 at 02:05:59AM +0200, Max Laier wrote: > On Wednesday 11 April 2007 01:19, Scott Lambert wrote: > > I've run into an interesting performance "issue" with ls on a > > 6.2-STABLE box, web1. This box is going to replace my current 4.11 > > box, ns, and is not currently active. It's running all the daemons it > > will be in production, but traffic is not pointed at it yet. > > > > root@web1 /home > > 17:58:57 Tue Apr 10 # time ls -l | wc -l > > 3135 > > > > real 0m35.224s > > user 0m6.748s > > sys 0m28.482s > ... > > root@web1 /home > > 18:01:13 Tue Apr 10 # uname -a > > FreeBSD web1.hosting.tcworks.net 6.2-STABLE-200702 FreeBSD > > 6.2-STABLE-200702 #0: Sun Feb 4 13:35:09 UTC 2007 > > root@dessler.cse.buffalo.edu:/usr/obj/usr/src/sys/SMP i386 > > > > root@web1 /home > > 18:03:38 Tue Apr 10 # time ls -ln | wc -l > > 3135 > > > > real 0m0.054s > > user 0m0.030s > > sys 0m0.031s > > Well, with nsswitch things are a bit more difficult. If you don't need > it, you can just use nsswitch.conf to turn it off for passwd/group. > Otherwise, you'll have to look at MFCing cached(8) from current. Aha! PEBKAC error! Changing group and passwd from compat to files has "fixed" the problem. Thank you for the education... -- Scott Lambert KC5MLE Unix SysAdmin lambert@lambertfam.org
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