OT: Leaks in Net-SNMP snmptrapd ??

[Stanley Hopcroft]

Dear Ladies and Gentlemen,

<OT content=anecdote about snmptrapd>

I am a happy user of Net-SNMP (5.0.9 on FreeBSD 4.8-RELEASE) to accept 
traps for input to Nagios as passive service checks. 

However, snmptrapd appears to have a gynormous memory leak.

After running for some days the process size grows from about 4 MB to 
o(100MB) !

Even after 4 hours running the process size is ~ 16 MB.

  PID USERNAME       PRI NICE  SIZE    RES STATE    TIME   WCPU    CPU 
COMMAND
66657 root             2   0 16332K 15100K select   0:36  0.05%  0.05% 
snmptrap

(
after a restart

tsitc# killall snmptrapd
tsitc# /usr/local/sbin/snmptrapd -S 6 -a

tsitc# ps -auxw | grep snmp
root   38146  0.0  1.3  4488 3232  ??  Ss    3:45PM   0:00.00 
/usr/local/sbin/snmptrapd -S 6 -a
tsitc# 
)

There don't appear to be any complaints in its log file or on the system 
log files.

Unfortunately, there are too many dependencies on Net-SNMP 5 for 
downgrade to Net-SNMP 4 to be reasonable (ethereal notably).

Has anyone else seen this behaviour  ?

(Letting me know will help decide if its a FreeBSD problem or an 
Net-SNMP problem and submitting a PR accordingly)

The only workaround I can imagine is restarting snmptrapd each few hours 
or so.

Back to normal programming
</OT>

Yours sincerely.
 
-- 
------------------------------------------------------------------------
Stanley Hopcroft
------------------------------------------------------------------------

'...No man is an island, entire of itself; every man is a piece of the
continent, a part of the main. If a clod be washed away by the sea,
Europe is the less, as well as if a promontory were, as well as if a
manor of thy friend's or of thine own were. Any man's death diminishes
me, because I am involved in mankind; and therefore never send to know
for whom the bell tolls; it tolls for thee...'

from Meditation 17, J Donne.


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