too many sockets in use

L

Lem0nHead

hello
I started to get some ENOBUFS errors.

Code: 
# vmstat -z | grep socket
socket:                   356,    12331,    12292,       39, 274334042,   112064

# netstat -n | wc -l
     621

any ideas on how to find out which process is using so many sockets?

thanks
 
You wanted to find out which process is using a lot of sockets? Then read the output, not pipe it through wc.
The difference in numbers is because sockstat also shows file sockets.
 
but, I mean, "socket" count is up to 12000+

from the look I gave on sockstat output, it's pretty ordinary (a few services using around 50~200 sockets), but nothing close to 1000+
 
Oh wait. Vmstat doesn't show the number of sockets in use. It shows the amount of socket memory (buffers) in use.
 
SirDice said:
Oh wait. Vmstat doesn't show the number of sockets in use. It shows the amount of socket memory (buffers) in use.
Click to expand...

oh, that makes some sense
the problem stopped after I raised maxsockets

but what I don't get is, on another server:

Code: 
# sockstat | wc -l
     486

# vmstat -z | grep socket
socket:                   416,    25605,      613,     3032, 201205440,        0

so, almost the same number of sockets on sockstat (486), but WAY less buffers in use (613 vs 12000)

any ideas on what may cause that?
maybe multiple quick connections/disconnections in a time less than enough to clean the buffers?
 
I'm definitely not versed enough in socket programming but I think those buffers are used for all sorts of socket data.
 
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