Inform socket overflow issue

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Hi,
I am seeing an issue with net-SNMP-5.9.1 configured to send informs where I
get an error that maximum sockets 1024 are opened and no more files can be
opened.
I even tried  net-SNMP-5.9.5.2 as well.

This issue surfaces after a time frame of about 240 days with 4 Informs
every day. To accelerate the issue, I configured it to send informs every
10 sec with a retry of 1 min. I see an error after about 2 hours of run
time.
I did run a tcpdump command during the testing to confirm I receive
acknowledgements from the trap receiver. There are occasional missed
acknowledgements and I see a retry with a successful acknowledgement. watch
-n 1 "ls /proc/<PID>/fd | wc -l" gives output as 1024 which is the default
socket limit in our Linux.

I tried SNMP GET for every 5 sec with no issue in the number of sockets. So
GETs are not a problem.

Errors I see are:
/proc/stat: Too many open files
interface_linux: cannot open /proc/net/dev: Too many open files
interface_linux: cannot open /proc/net/dev: Too many open files
/proc/stat: Too many open files
interface_linux: cannot open /proc/net/dev: Too many open files

Agent configuration:
compiled for V2C agent
Agent is generating Informs from a posix thread that is actively waiting
for the events.
send_v2trap() is used to generate Informs.

snmpd.conf file: (retry count is 72, interval is 1 min)
rwcommunity private
trapsess -v 2c -Ci -c tech -r 72 -t 60 192.168.1.100:162

Any inputs in this regard are greatly appreciated.

Regards,
Raj.

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<div dir=3D"ltr">Hi,<div>I am seeing an issue with net-SNMP-5.9.1 configure=
d to send informs where I get an error that maximum sockets 1024 are opened=
 and no more files can be opened.</div><div>I even tried=C2=A0

net-SNMP-5.9.5.2 as well.</div><div><br></div><div>This issue surfaces afte=
r a time frame of about 240 days with=C2=A04 Informs every day. To accelera=
te the issue, I configured it to send informs every 10 sec with a retry of =
1 min. I see an error after about 2 hours of run time.</div><div>I did run =
a tcpdump command during the testing to confirm I receive acknowledgements =
from the trap receiver. There are occasional missed acknowledgements and I =
see a retry with a successful acknowledgement.=C2=A0watch -n 1 &quot;ls /pr=
oc/&lt;PID&gt;/fd | wc -l&quot; gives output as 1024 which is the default s=
ocket limit in our Linux.</div><div><br></div><div>I tried SNMP GET for eve=
ry 5 sec with no issue in the number of sockets. So GETs are not a problem.=
</div><div><br></div><div>Errors I see are:<br>/proc/stat: Too many open fi=
les<br>interface_linux: cannot open /proc/net/dev: Too many open files<br>i=
nterface_linux: cannot open /proc/net/dev: Too many open files<br>/proc/sta=
t: Too many open files<br>interface_linux: cannot open /proc/net/dev: Too m=
any open files</div><div><br></div><div>Agent configuration:</div><div>comp=
iled for V2C agent</div><div>Agent is generating Informs from a posix threa=
d that is actively waiting for the events.</div><div>send_v2trap() is used =
to generate Informs.</div><div><br></div><div>snmpd.conf file: (retry count=
 is 72, interval is 1 min)</div><div>rwcommunity private</div><div>trapsess=
 -v 2c -Ci -c tech -r 72 -t 60 <a href=3D"http://192.168.1.100:162">192.168=
.1.100:162</a></div><div><br></div><div>Any inputs in this regard are great=
ly appreciated.</div><div><br></div><div>Regards,</div><div>Raj.</div><div>=
<br></div><div><br></div></div>

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