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We have a problem of jserv running away (using 100% CPU) and finally
stop communicating with the network. I have found using lsof that the
socket is in a CLOSE_WAIT state:

: # lsof -i:8010
: COMMAND     PID     USER   FD   TYPE       DEVICE   SIZE/OFF      INODE NAME
: java       9327  gopherm   10u  inet   0x603dc3b8        0t0        TCP 
:       localhost:ajpv12 (LISTEN)
: java       9327  gopherm   13u  inet   0x60f3b780      0t769        TCP
:       localhost:ajpv12->localhost:50255 (CLOSE_WAIT)

I see it talking to port 50255 which I do the same for:

: # lsof -i:50255
: COMMAND     PID     USER   FD   TYPE       DEVICE   SIZE/OFF      INODE NAME
: java       9327  gopherm   13u  inet   0x60f3b780      0t769        TCP
:       localhost:ajpv12->localhost:50255 (CLOSE_WAIT)

Since the PIDs are the same it looks like jserv (or perhaps java) is talking
to itself through sockets.

Questions:

        Why would it be talking to itself through sockets?
        Is it some kind of self test/monitoring? Can it be shutoff if so?
        What would cause it to fail just before closing the socket?

PS

Are there any search facilities available for searching this lists 
archives?

Thanks
Jon Hickmott - Web Admin - The University of Western Ontario.


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