Date: Fri, 7 Jul 2000 08:34:39 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Marius Bendiksen <mbendiks@eunet.no> Cc: Alfred Perlstein <bright@wintelcom.net>, freebsd-arch@FreeBSD.ORG Subject: Re: Alterations to vops Message-ID: <200007071534.IAA00560@apollo.backplane.com> References: <Pine.BSF.4.05.10007071504350.72231-100000@login-1.eunet.no>
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:
:> What may be happening here is stalling in namei(). find and cvsup
:> are very heavy on path lookups and that combined with seek latency
:> on the drive could result in filesystem locks on directories being
:> held for much longer periods of time then normal. Any other process
:> trying to 'open' a file (verses reading or writing an already-open file)
:> would start to stall.
:
:Wouldn't this problem be alleviated by making the operations incremental,
:rather than performing the whole thing in one go in kernelspace?
:
:Marius
No. The operations in kernel space are already incremental... the
kernel is being entered once per path lookup by find/cvsup.
-Matt
Matthew Dillon
<dillon@backplane.com>
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