Bug 40763 - Problem: JAM VM hangs after running for ~2 hours. There is no response from jetty (running on jamvm) at this time.
Summary: Problem: JAM VM hangs after running for ~2 hours. There is no response from j...
Status: UNCONFIRMED
Alias: None
Product: classpath
Classification: Unclassified
Component: classpath (show other bugs)
Version: 0.98
: P3 blocker
Target Milestone: ---
Assignee: Not yet assigned to anyone
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2009-07-15 09:09 UTC by Rajesh Goel
Modified: 2009-07-15 09:09 UTC (History)
1 user (show)

See Also:
Host: 0.98
Target: 0.98
Build: 0.98
Known to work:
Known to fail:
Last reconfirmed:

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Description Rajesh Goel 2009-07-15 09:09:40 UTC 
Problem: JAM VM hangs after running for ~2 hours. There is no response from jetty (running on jamvm) at this time.

The environment is: 
- the jam vm version is JamVM 1.5.3
- GNU Classpath version is 0.98
- the GNU Classpath is build by disabling the following things as they are not required by us:
 . /configure --disable-gtk-peer --disable-plugin --disable-gconf-peer --enable-tools
- we are running jetty 6.1.8 using the jam vm. 
- we are connecting to the jetty (which is running on jamvm), through the browser (IE7) on port 8080, but there is no response from the server.  
- Our code runs fine when it is running jetty on sun jre 1.5. So it is certain that the problem is with the jamvm
- the linux platform is: debian
- After some analysis, it seems that there is some bug in the socket library of GNU Classpath due to which it stops responding after running for sometime.

Queries: Basically we are not able to do anything when the JAMVM hangs, so could someone please tell me about how to debug the jamvm when it hangs i.e. 
- Is there any hook so that we can attach something to it, 
- Can we debug it remotely, 
- How to enable logging in it?
- Any tool which can aid us in analyzing this problem further?

We are stuck on this; please provide your valuable suggestions/resolutions for the same?