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From: Jamie Heilman <jamie@audible.transient.net>
To: "J. Bruce Fields" <bfields@fieldses.org>
Cc: linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: v3.5 nfsd4 regression; utime sometimes takes 40+ seconds to return
Date: Wed, 15 Aug 2012 13:58:54 +0000	[thread overview]
Message-ID: <20120815135854.GI32347@cucamonga.audible.transient.net> (raw)
In-Reply-To: <20120815061115.GC32347@cucamonga.audible.transient.net>

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Jamie Heilman wrote:
> I'll try to get full rcpdebug traces on client and server as the delay
> is occuring in the hopes that helps pin things down, and post them
> separately.

OK, here are the logs from client and server, where a run of my test program
under strace -T resulted in:

utime("utime-test.c", [2012/08/15-13:35:20, 2012/08/15-13:22:04]) = 0 <0.150815>
open("utime-test.c", O_RDONLY)          = 3 <0.242635>
close(3)                                = 0 <0.147768>
stat("utime-test.c", {st_mode=S_IFREG|0644, st_size=696, ...}) = 0 <0.002772>
utime("utime-test.c", [2012/08/15-13:35:20, 2012/08/15-13:22:04]) = 0 <71.878058>

The client is a 64-bit v3.4.8 kernel, the server is 32-bit, v3.5.1 +
the two sunprc patches that will be in v3.5.2.

(The client's system clock is a touch faster than the server's, but
these logs start at the same instant.)


-- 
Jamie Heilman                     http://audible.transient.net/~jamie/

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  reply	other threads:[~2012-08-15 13:59 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-15  6:11 Jamie Heilman
2012-08-15 13:58 ` Jamie Heilman [this message]
2012-08-15 15:02   ` J. Bruce Fields
2012-08-16 20:18     ` Jamie Heilman
2012-08-16 20:42       ` J. Bruce Fields
2012-08-16 21:09         ` J. Bruce Fields
2012-08-16 21:34           ` Jamie Heilman
2012-08-17 13:08             ` J. Bruce Fields

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