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From "B. Balakrishna Rao" <balakrishna_...@persistent.co.in>
Subject RE: Memory leak in using SSL with Tomcat 6.0.18
Date Wed, 04 Aug 2010 14:19:02 GMT
Hi Chris,

Please note that, the 2,996 count is on production environment.
The counts 7 and 10 are on my local environment.

Below is the procedure I am following on my local environment to test this:

Log in -> do some operations -> log out.
I am calling session.invalidate() method upon log out. After that, I am taking the heap dump.
Eclipse Memory Analyzer tool will do a full GC before it produce the results. Hence, com.sun.net.ssl.internal.ssl.SSLSocketImpl
should be GCed??


Thanks,
Bala.


-----Original Message-----
From: Christopher Schultz [mailto:chris@christopherschultz.net] 
Sent: Wednesday, August 04, 2010 7:43 PM
To: Tomcat Users List
Subject: Re: Memory leak in using SSL with Tomcat 6.0.18

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 8/4/2010 10:06 AM, B. Balakrishna Rao wrote:
> I have implemented your suggestion. I have deployed my application 
> in Tomcat 6.0.29 version under the same environment as Tomcat
> 6.0.18(test environment).
> 
> After performing the similar operations on both tomcat versions one 
> after another, I have taken the heap dumps from both versions. What I
> observed is: Number of com.sun.net.ssl.internal.ssl.SSLSocketImpl
> objects are 10 in tomcat 6.0.18 and 7 in tomcat 6.0.29.
>
> I can't able to say that the issue is fixed :(

Neither of these object counts seem unreasonable. Both are much better
than the original report of nearly 3000 object instances.

What is maxThreads set to? I would imagine that there would be a number
SSLSocketImpl objects around for each current connection, plus some that
hadn't yet been GC'd.

- -chris
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