Re: random collector hangs

On Sun, Apr 29, 2007 at 02:01:18PM -0400, Mike Fisher wrote:
> The intervals can range from hours to days, but when a given collector 
> process hangs, it's hung for good until manually killed.  I've seen 
> hangs in three of the six collectors that run from cron.  They occur 
> most often in one subtree, but never yet at the same target.  Running 
> with loglevel=debug revealed nothing unusual.  The log simply stops 
> where the process hangs.  Running strace against the hung process always 
> gives
> 
> 	recvfrom(4,

What's socket 4?  It'll be earlier in the strace, or much easier,
do an "lsof -p PID" against the hung process to see what sockets
it has open.

> ...  Given the strace output, I'm thinking the 
> issue may be down in the SNMP module somewhere, but I won't know for 
> sure without more work.

Dumb ass idea but it might work - switch from the default SNMP library
to Net-SNMP's library.  The Net-SNMP code has been tested against
modern platforms, and is less likely to have 64-bit porting bugs.


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