FWIW (not much), I can't duplicate this with S2.0.11 under Mac OS X; I may
have a report from both Windows and Linux boxen in a little bit.

Dave

--- Bryan Taylor <[EMAIL PROTECTED]> wrote:

> We're troubleshooting a severe problem in our production system. We get
> errors like this in tomcat:
> SEVERE: Socket accept failed
>     org.apache.tomcat.jni.Error: Too many open files
> 
> We're on linux and run lsof to show the files tomcat has open, which shows
> hundreds (763 in one example) of distinct open files for
> struts2-core-2.0.9.jar . The large number of these causes us to hit the
> limit on the number of open files (1024 by default). 
> 
> In a development setting, I run the following script to display open file
> handles to this jar every second:
> [root]# while true; do lsof -p $TOMCAT_PID | grep struts2-core-2.0.9.jar |
> wc -l; sleep 1; done
> 
> When I go to our login page (a freemarker template served by a struts
> action) if I hit refresh on the page as quickly as I can, I see the numbers
> start at 2 or 3 and then go up in jumps of 20 at a time (eg 23, 43, 63,
> 83). After a while, say 30 seconds, the number will drop again, perhaps due
> to garbage collection. It appears that under our production load, the
> increases are beating the decreases until we hit the open file limit. 
> 
> We have attempted to duplicate this with the struts showcase sample app.
> One user by simply hitting refresh a lot can make the file handle count go
> into the 30's.
> 
> Any ideas on what could be happening? Any help is greatly appreciate --
> this is causing us big problems.
> 
> 
> 
> 
> 
> 
>      
>
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