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timingout

daemon@ATHENA.MIT.EDU (Takehiko Nagakura)
Tue Dec 2 11:21:31 1997

To: hotline@MIT.EDU
Cc: smyser@MIT.EDU, tfitz@MIT.EDU, takehiko@MIT.EDU
Date: Tue, 02 Dec 1997 11:21:02 EST
From: Takehiko Nagakura <takehiko@MIT.EDU>

Hello.

 I recently have frequent timeout problem on lockers hooked up with
 a server named cat2.mit.edu.

 It does time out as below very oftern in the past month and
 it seems to be getting worse.

>CAT1:/mit/arch1/people % attach arch1
>attach: Filesystem "arch1" is already attached (mapping)
>
>CAT1:/mit/arch1/people % ls
>NFS getattr failed for server CAT2.MIT.EDU: error 5 (RPC: Timed out)
>.: Connection timed out
>
>CAT1:/mit/arch1/people % ls
>4.204  lsass


 The problem is, you can attach the locker OK, but when you try to
 do something (just listing the files or cd'ing), with a pretty
 good probability, it times out. Time out does not happen 100%, 
 but during the daytime, it happesn at a good possibiliby, maybe
 50-60% of the time.

 My amateur guess is some network problem slowing down the communication
 or actual timeout threshold too small.
 Timeout is not likely usually in the morning and late night.

 Would you be able to investigate ? There might be other servers nearby
 which has similar problems.

 Thanks.  Takehiko




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