From: Frank van Maarseveen <frankvm@frankvm.com>
To: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Linux NFS mailing list <linux-nfs@vger.kernel.org>
Subject: Re: 3.1.4: NFSv3 RPC scheduling issue?
Date: Sun, 11 Dec 2011 13:40:08 +0100 [thread overview]
Message-ID: <20111211124008.GA10460@janus> (raw)
In-Reply-To: <1323486601.32695.2.camel@lade.trondhjem.org>
On Fri, Dec 09, 2011 at 10:10:01PM -0500, Trond Myklebust wrote:
> [...]
> I'm still mystified as to what is going on here...
>
> Would it be possible to upgrade some of your clients to 3.1.5 (which
> contains a fix for a sunrpc socket buffer problem) and then to add the
> following patch?
Did so, the mount locked up and still is, ready for some more
experimentation. I don't see any difference however. Did a
echo 0 >/proc/sys/sunrpc/rpc_debug afterwards (see below).
A recipe which seems to trigger the issue (at least occasionally) is
cd /mount-point
ssh server echo 3 \>/proc/sys/vm/drop_caches
echo 3 >/proc/sys/vm/drop_caches
for i in `seq 100`
do
du >/dev/null 2>&1 &
done
I'll try it on a pristine kernel to rule out some kernel patches (unlikely to
be the cause or trigger but just to be sure).
-pid- flgs status -client- --rqstp- -timeout ---ops--
29785 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:none
29902 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29903 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29907 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29920 0080 -11 f519b6b0 f2606980 0 c191c4ac nfsv3 GETATTR a:call_status q:xprt_sending
29921 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29922 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29923 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29924 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29925 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29926 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29927 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29928 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29929 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29930 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29931 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29932 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29933 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29934 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29935 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29936 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29937 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29938 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29939 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29940 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29941 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29942 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29943 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29944 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29945 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29946 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29947 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29948 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29949 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29950 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29951 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29952 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29953 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29954 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29955 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29956 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29957 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29958 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29959 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29960 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29961 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29962 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29963 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29964 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29965 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29966 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29967 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29968 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29969 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29970 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29971 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29972 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29973 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29974 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29975 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29976 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29977 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29978 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29979 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29980 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29981 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29982 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29983 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29984 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29985 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29986 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29987 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29988 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29989 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29990 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29991 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29992 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29993 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29994 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29995 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29996 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29997 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29998 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
29999 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
30000 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
30001 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
30002 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
30003 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
30004 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
30005 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
30006 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
30007 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
30008 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
30009 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
30010 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
30011 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
30012 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
30013 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
30014 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
30015 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 GETATTR a:call_reserveresult q:xprt_sending
30025 0080 -11 f519b6b0 (null) 0 c191c4ac nfsv3 ACCESS a:call_reserveresult q:xprt_sending
--
Frank
next prev parent reply other threads:[~2011-12-11 12:40 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-05 16:50 3.1.4: NFSv3 RPC scheduling issue? Frank van Maarseveen
2011-12-05 23:39 ` Trond Myklebust
2011-12-06 8:11 ` Frank van Maarseveen
2011-12-06 19:57 ` Trond Myklebust
2011-12-07 13:43 ` Frank van Maarseveen
2011-12-10 3:10 ` Trond Myklebust
2011-12-11 12:40 ` Frank van Maarseveen [this message]
2011-12-11 18:10 ` Frank van Maarseveen
2011-12-11 14:09 ` Frank van Maarseveen
2011-12-06 9:04 ` Frank van Maarseveen
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