Date: Thu, 11 Jan 2007 09:59:56 -0800 From: "Jeff Mohler" <speedtoys.racing@gmail.com> To: Freminlins <freminlins@gmail.com> Cc: Chris <chrcoluk@gmail.com>, FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: is THIS why the 6.2 release seems stalled ? Message-ID: <a969fbd10701110959h2e2a50afv37a7f31662c48e3b@mail.gmail.com> In-Reply-To: <eeef1a4c0701110131k6e1372f3j92d17e264e2571d@mail.gmail.com> References: <45A2805E.7060000@ccstores.com> <ef10de9a0701091508k7f1775f7h4c2cdc8c7498e7fc@mail.gmail.com> <20070110003730.GA94711@gizmo.acns.msu.edu> <ef10de9a0701092201x22bc17f2p4434eab0dda58c63@mail.gmail.com> <20070110154436.GA97702@gizmo.acns.msu.edu> <20070110161721.GA68022@mooseriver.com> <3aaaa3a0701100901j119e2566yf1718f140027f7d1@mail.gmail.com> <eeef1a4c0701101300o612aacfbxe0eca0bcc442ba69@mail.gmail.com> <a969fbd10701101700p283cfa8bj2386f9b42c41255a@mail.gmail.com> <eeef1a4c0701110131k6e1372f3j92d17e264e2571d@mail.gmail.com>
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Yes, they dont solve this whatsoever. Its a severely broken code issue in the attr caching mechanism. Honest..give it a shot. Even with very very slow ATA, local builds of the kernel or world are faster than over 1G NFS to an F6000 series filer, and the filer will still thrash on WAFL metadata requests for the client, cuz everytime ../.. walks somewhere the client knows nothing and it's all sent over the wire again. Over and over and over. Thats as much as I understand about it, freebsd-fs has great detail on this "bug". On 1/11/07, Freminlins <freminlins@gmail.com> wrote: > On 11/01/07, Jeff Mohler <speedtoys.racing@gmail.com> wrote: > > > > The basic reason is that a ../.. walk invalidates cached metadata, and > > you end up with a pipe full of getattr's all of the time. Freebsd-fs > > has discussed this a bit, but no fixing is coming soon. We use linux > > to compile builds, we'd like to use Freebsd, but linux on Filers via > > NFS is about 3x faster than the same builds on Fbsd to the same filer. > > ../.. baby. > > > > > Did you try different mount options on the FreeBSD clients. I have no idea, > but Linux may have different defaults. > > Frem. >
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