[OpenAFS] fileserver runs constantly; stops answering

[Brent Johnson]

Edward,

How did you create the call stack?

-Brent

emoy@apple.com wrote:

> I've been pushing thousands of files to the file server (copying the  
> Mac OS X boot drive to AFS).  All of a sudden, /afs goes away, and 
> the  fileserver process is in constant run:
>
>   535  ??  R<     8:37.80 /usr/afs/bin/fileserver
>
> bos can't stop it, so I have to kill -INT it.  This has happened  
> several times.
>
> Sampling the process, I get the following, though it complains that 
> the  stack is in an inconsistent state, so it truncates the trace:
>
> Analysis of sampling pid 535 every 10 milliseconds
> Call graph:
>     300 Thread_0e03
>       300 Create_Process_Part2
>         300 rx_ListenerProc
>           298 rxi_ListenerProc
>             153 select
>               153 select [STACK TOP]
>             80 rxevent_RaiseEvents
>               79 clock_UpdateTime
>                 77 getitimer
>                   77 getitimer [STACK TOP]
>                 2 clock_UpdateTime [STACK TOP]
>               1 rxevent_RaiseEvents [STACK TOP]
>             56 rxi_ReadPacket
>               49 recvmsg
>                 49 recvmsg [STACK TOP]
>               3 rxi_ReadPacket [STACK TOP]
>               2 bzero
>                 2 bzero [STACK TOP]
>               1 __error
>                 1 __error [STACK TOP]
>               1 rxi_ReadPacket
>                 1 cerror
>                   1 cthread_set_errno_self
>                     1 cthread_set_errno_self [STACK TOP]
>             3 __eprintf
>               3 __eprintf [STACK TOP]
>             3 rxi_RestoreDataBufs
>               3 rxi_RestoreDataBufs [STACK TOP]
>             2 rxi_ListenerProc [STACK TOP]
>             1 recvmsg
>               1 recvmsg
>                 1 recvmsg [STACK TOP]
>           2 rxevent_RaiseEvents
>             2 rxevent_RaiseEvents [STACK TOP]
>
> Total number in stack (recursive counted multiple, when >=5):
>
> Sort by top of stack, same collapsed (when >= 5):
>         select [STACK TOP]        153
>         getitimer [STACK TOP]        77
>         recvmsg [STACK TOP]        50
>
> Anyone seen this and/or know what it is about?  The server is Mac OS 
> X  running OpenAFS 1.2.8, with various patches, though nothing in the 
> lwp  area, where the sample is indicating.
> ------------------------------------------------------------------------ 
> -- 
> Edward Moy
> Apple Computer, Inc.
> emoy@apple.com
>
> (This message is from me as a reader of this list, and not a statement
> from Apple.)
>
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-- 
Brent A. Johnson
JPL File Services Engineer
Jet Propulsion Laboratory 
Telephone: 4-2138 or 818-354-2138	Pager: 1-800-759-8888 PIN=1256866