Date: Sat, 4 Sep 2004 13:32:50 -0300 (ADT) From: "Marc G. Fournier" <scrappy@hub.org> To: Don Lewis <truckman@FreeBSD.org> Cc: freebsd-current@FreeBSD.org Subject: Re: what is fsck's "slowdown"? Message-ID: <20040904133128.I812@ganymede.hub.org> In-Reply-To: <200409040659.i846x4nM031021@gw.catspoiler.org> References: <200409040659.i846x4nM031021@gw.catspoiler.org>
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On Fri, 3 Sep 2004, Don Lewis wrote: > On 4 Sep, Marc G. Fournier wrote: >> On Fri, 3 Sep 2004, Don Lewis wrote: > >>> Would the file system in question happen to be full of UNREF files that >>> fsck is deleting? >> >> mostly 'ZERO LENGTH DIRECTORY' ... > > Hmn, this may be something else then, possibly the buffer lookup in > getdatablk(). It would be very interesting to compile/link a profiled > version of fsck and see what shows up as the hot spot. Are you using > the default value for MAXBUFSPACE (defined in fsck.h). Everything *should* be default ... I've never modified fsck.h myself, but do have a -D flag set in /etc/make.conf to increase KMEM_SIZE so that we're able to increase our # of vnodes, so unless it somehow uses that to change teh default value ... ? ---- Marc G. Fournier Hub.Org Networking Services (http://www.hub.org) Email: scrappy@hub.org Yahoo!: yscrappy ICQ: 7615664
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