Socket leak (Was: Re: What triggers "No Buffer Space) Available"?

[Marc G. Fournier]

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I'm trying to probe this as well as I can, but network stacks and sockets have 
never been my strong suit ...

Robert had mentioned in one of his emails about a "Sockets can also exist 
without any referencing process (if the application closes, but there is still 
data draining on an open socket)."

Now, that makes sense to me, I can understand that ... but, how would that look 
as far as netstat -nA shows?  Or, would it?  For example, I have:

mars# netstat -nA | grep c9655a20
c9655a20 stream      0      0        0 c95d63f0        0        0
c95d63f0 stream      0      0        0 c9655a20        0        0
mars# netstat -nA | grep c95d63f0
c9655a20 stream      0      0        0 c95d63f0        0        0
c95d63f0 stream      0      0        0 c9655a20        0        0

They are attached to each other, but there appears to be no 'referencing 
process' ... it is now 10pm at night ... I saved a 'snapshot' of netstat -nA 
output at 6:45pm, over 3 hours ago, and it has the same entries as above:

c9655a20 stream      0      0        0 c95d63f0        0        0
c95d63f0 stream      0      0        0 c9655a20        0        0

again, if I'm reading this right, there is no 'referencing process' ... first, 
of course, am I reading this right?

second ... if I am reading this right, and, if I am understanding what Robert 
was saying about 'draining' (alot of ifs, I know) ... isn't it odd for it to 
take >3 hours to drain?

Again, if I'm reading / understanding things right, without the 'referencing 
process', it won't show up in sockstat -u, which is why my netstat -nA numbers 
keep growing, but sockstat -u numbers don't ... which also means that there is 
no way to figure out what process / program is leaving 'dangling sockets'? :(


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Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
Email . scrappy at hub.org                              MSN . scrappy at hub.org
Yahoo . yscrappy               Skype: hub.org        ICQ . 7615664
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