Strange memory leak in windows service (pool nonpaged bytes)
- From: "Adam Clauss" <aclauss@xxxxxxxx>
- Date: Tue, 15 Apr 2008 09:52:06 -0500
We have a Windows Service written in C# that seems to be the center of a
periodic system failure.
The following error gets logged to the system event log:
EVENT_SRV_NO_NONPAGED_POOL
(event ID: 2019).
I turned on performance monitor and started keeping an eye on our process
(monitored pool nonpaged bytes for both the entire system and our process).
What I saw initially was no problems, a nice relatively straight line for
both (minor ups and downs, but that was expected). However, at some point
(we didn't see what initiated this) the values for both our process and the
system skyrocketed, both completely pegged off the chart. Unfortunately, we
caught it too late to know whether this was a sudden spike, or a gradual
growth - I can say that it is not a constant growth, it was fine during the
day while I was monitoring it. I now have the actual counter log turned on
for those values so I can see exactly what type of increase it was.
In any case, I've never run into anything like this before and am not sure
where to even start... google'ing the event log error returned a whole one
result, that gave me a great warm, fuzzy feeling.
Our process is basically a "cache" of data, it initiates connections to
various other processes from which it retreives data from. Clients also
connect to our process in order to retrieve this cached data from us.
Commands from clients are also passed via this process and on to the various
processes we connect to (and command responses returned the opposite
direction). All of these connections are TCP, and there are probably
anywhere from 20-50 of these connections open at a time.
Any thoughts on what I should be looking for??
-Adam
.
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