If you have the lsof utility on the system (most linuxes), try using
that for diagnosis.
As root run: lsof -p <the_tomcat_pid>.
Glenn Nielsen wrote:
I have had a third failure. Once again after 9-10 days. There is
definitley some sort of file descriptor leak but I couldn't find
any more information. Neither netstat or fstat showed anything
unusual. Neither did a full thread stack dump of the JVM.
Regards,
Glenn
On Thu, Dec 22, 2005 at 11:56:08PM -0500, Max Rudman wrote:
We've definitely seen this problem of Tomcat running out of sockets.
I our case it's caused by Lucene which seems to leak file descriptors
to search index. Unix shows lots of "orphaned" file descriptors to
various segment files inside the index.
Max
On Dec 22, 2005, at 11:45 PM, Anil Gangolli wrote:
I've filed ROL-946, which identifies one probable source of a
connection leak. I'll fix this when I return in a week or so if it
hasn't already been addressed.
--a
Anil Gangolli wrote:
Yeah. Any idea of where the leaks are will help. Please do file
a bug because I'd like to have a thread specific to this there.
Glenn Nielsen wrote:
Next time it happens I will do some forensics before I restart
Tomcat.
Things such as a JVM full thread stack dump, netstat, fstat, etc.
Then I may have a better idea where the file descriptor leak is.
One thing I have found is that the way GC works may impact the
number of file descriptors. If you don't explicitly close some
IO streams the file descriptor associated with that stream will
still exist until the object is finalized during garbage collection.
Regards,
Glenn Nielsen
On Sun, Dec 18, 2005 at 08:59:22AM -0800, Allen Gilliland wrote:
Actually, you may also want to check the search stuff. i have
seen that
same thing happen with Lucene in other apps before.
-- Allen
On Sun, 2005-12-18 at 06:38, Anil Gangolli wrote:
Sounds like something we need to track and look into. Please
file a bug report on our issue tracker: http://
opensource2.atlassian.com/projects/roller/secure/Dashboard.jspa
--a.
Glenn Nielsen wrote:
Since upgrading to roller 1.2 and configuring several feeds in
the Planet Tomcat has failed twice due to running out of file
descriptors. Both times the failure occurred about 10 days
after Tomcat was started. I suspect the background threads
for the Planet may be leaking file descriptors for sockets
but haven't confirmed this yet.
FreeBSD 5.3, Java 1.4, Tomcat 4.1, Roller 1.2.
Has anyone had similar problems?
Regards,
Glenn Nielsen
Glenn
