Hi:

We are using JRun 3.02 with IPlanet 4.1 on  a sunOS 5.7 machine.  The
whole system was up and running fine for a month (except restart the
JRun server one or twice a week). But lately we ran into a lot of
problems with JRun.  It appeared slow in the beginning, and then died.
We have logged the metric information, I can see the number of busy
threads jump from the normal level (~10) to 200 within a 5-10 minutes.
It's just hanging after that, and nothing get process further.

I wondered if anything could cause JRun accumulate thread like this.
Will it help if we increase some number associate with thread limit? One
thing even more mysterious:  Several times, when the JRun went down,
every time we restart it, it went down within 10 minutes.   It's acting
like that for hours, and then, all of sudden, without changing anything
in the system,  it became stable again and stayed that way at least for
a day or two.  Any idea of what could cause that?

Any help would be appreciated, Thanks.


Yingxia
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