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Entry  11 Feb 2013, Wes Gohn, Forum, send_tcp error 
    Reply  11 Feb 2013, Stefan Ritt, Forum, send_tcp error 
       Reply  11 Feb 2013, Wes Gohn, Forum, send_tcp error 
          Reply  12 Feb 2013, Stefan Ritt, Forum, send_tcp error 
             Reply  19 Feb 2013, Wes Gohn, Forum, send_tcp error 
Message ID: 859     Entry time: 11 Feb 2013     Reply to this: 860
Author: Wes Gohn 
Topic: Forum 
Subject: send_tcp error 
I am getting a series of errors from MIDAS that I do not understand, so I hope
someone can help me figure this out.

I am attempting to run many frontends on one machine. I can run 8 with no
problem, but if I try to add a 9th I get errors relating to send_tcp. 

I have tried adjusting the max event sizes and buffer sizes, but it has not
resolved the problem. I also tried adjusting the data rates and the total data
volume going through each frontend, but there was no change. And as far as I can
tell I am not up against any hardware limits.

The errors are repeated continuously while a run is going. The three errors I
get are:

16:45:22 [FakeData09,ERROR] [midas.c:9958:rpc_client_call,ERROR] send_tcp() failed
16:45:22 [FakeData09,ERROR] [frontend_rpc.c:191:rpc_call,ERROR] No RPC to master
16:45:22 [FakeData09,ERROR] [system.c:4166:send_tcp,ERROR]
send(socket=9,size=16) returned -1, errno: 32 (Broken pipe)

If you have any suggestions of how I can debug this, please let me know. Thanks!
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