Date: Fri, 16 Jan 2009 09:28:52 -0500 From: John Baldwin <jhb@freebsd.org> To: "Kip Macy" <kmacy@freebsd.org> Cc: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: Re: svn commit: r186710 - user/kmacy/HEAD_fast_net/sys/kern Message-ID: <200901160928.52636.jhb@freebsd.org> In-Reply-To: <3c1674c90901152120o6c1be5dal785c76eae536b757@mail.gmail.com> References: <200901030200.n0320Arr013245@svn.freebsd.org> <200901151003.27545.jhb@freebsd.org> <3c1674c90901152120o6c1be5dal785c76eae536b757@mail.gmail.com>
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On Friday 16 January 2009 12:20:37 am Kip Macy wrote: > 404 > > On Thu, Jan 15, 2009 at 7:03 AM, John Baldwin <jhb@freebsd.org> wrote: > > On Friday 02 January 2009 9:00:10 pm Kip Macy wrote: > >> Author: kmacy > >> Date: Sat Jan 3 02:00:10 2009 > >> New Revision: 186710 > >> URL: http://svn.freebsd.org/changeset/base/186710 > >> > >> Log: > >> convert name cache lock to rwlock for lookups > > > > I think you need to restart the lookup if you fail an upgrade. I've had a > > patch to do that for years (literally) but it didn't help performance in > > earlier tests by kris@. You can find one that does the restarts at > > www.freebsd.org/~jhb/namei_rwlock.patch. Sorry, add patches/ like so: www.freebsd.org/~jhb/namei_rwlock.patch You can always find the latest version of it in //depot/user/jhb/lock/kern/vfs_cache.c -- John Baldwin
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