Re: Tomcat/JVM crashes on Linux

2004-12-21 Thread Wade Chandler
Greg Lappen wrote: That's a good idea, I'm going to try that. Its a cheap way to confirm or deny my suspicions. Thanks! On Dec 21, 2004, at 9:20 AM, Eric Rotick wrote: I've not tried this myself but you could add a Runtime.addShutdownHook and get it to print out anything which will give you a c

Re: Tomcat/JVM crashes on Linux

2004-12-21 Thread Eric Rotick
I'd be interested to know the outcome of this one when you crack it. On Tue, 21 Dec 2004 09:32:42 -0500, Greg Lappen <[EMAIL PROTECTED]> wrote: > That's a good idea, I'm going to try that. Its a cheap way to confirm > or deny my suspicions. > > Thanks! > On Dec 21, 2004, at 9:20 AM, Eric Rotick

Re: Tomcat/JVM crashes on Linux

2004-12-21 Thread Greg Lappen
That's a good idea, I'm going to try that. Its a cheap way to confirm or deny my suspicions. Thanks! On Dec 21, 2004, at 9:20 AM, Eric Rotick wrote: I've not tried this myself but you could add a Runtime.addShutdownHook and get it to print out anything which will give you a clue. On Tue, 21 Dec

Re: Tomcat/JVM crashes on Linux

2004-12-21 Thread Eric Rotick
I've not tried this myself but you could add a Runtime.addShutdownHook and get it to print out anything which will give you a clue. On Tue, 21 Dec 2004 08:47:49 -0500, Greg Lappen <[EMAIL PROTECTED]> wrote: > Well, turns out the RAM is fine in the server. Our hosting provider > tested it last ni

Re: Tomcat/JVM crashes on Linux

2004-12-21 Thread Greg Lappen
Well, turns out the RAM is fine in the server. Our hosting provider tested it last night and said it checked out fine. Is there any other reason that the JVM/Tomcat would just exit like this? Could System.exit() be called somewhere? Isn't there a way to prevent System.exit() from being call

Re: Tomcat/JVM crashes on Linux

2004-12-20 Thread Eric Rotick
The application receives data packets from acoustic sensors. While the total load is not huge, because of the way the data is collected there are periods of no activity and then periods when all hell breaks loose. This happens every 15 minutes and we size the memory based on the use of swap over a

Re: Tomcat/JVM crashes on Linux

2004-12-20 Thread Eric Rotick
No core dump and nothing significant in the log files. The process just went away. Actually now I think about it we did have some other weirdness like JARs that were corrupt that also went away with the good memory. On Mon, 20 Dec 2004 15:13:35 -0500, Greg Lappen <[EMAIL PROTECTED]> wrote: > When

Re: Tomcat/JVM crashes on Linux

2004-12-20 Thread Wade Chandler
Greg Lappen wrote: What kind of load does your application handle? I am not processing a HUGE amount of requests, but we server about 6000 visitors a day, 15,000 pages. Greg On Dec 20, 2004, at 1:28 PM, Wade Chandler wrote: Greg Lappen wrote: Hello- Has anyone had a problem with Tomcat 5.0.28 c

Re: Tomcat/JVM crashes on Linux

2004-12-20 Thread Greg Lappen
What kind of load does your application handle? I am not processing a HUGE amount of requests, but we server about 6000 visitors a day, 15,000 pages. Greg On Dec 20, 2004, at 1:28 PM, Wade Chandler wrote: Greg Lappen wrote: Hello- Has anyone had a problem with Tomcat 5.0.28 crashing on Linux wi

Re: Tomcat/JVM crashes on Linux

2004-12-20 Thread Greg Lappen
When you say the problem was similar, did you also have no core dump or log messages, just a missing JVM process? I am asking our hosting provider to test the server's RAM - I was going to do this before but since no other process ever crashes (Apache, MySql, etc.) we didn't think it could be

Re: Tomcat/JVM crashes on Linux

2004-12-20 Thread Eric Rotick
I had a similar problem with an almost identical setup to yours which turned out to be bad memory. An extra 1GB stick was added which had a bad section in the top of the memory map. This memory only got used when things got busy so everyone suspected some threading issue. We got lucky and spotted s

Re: Tomcat/JVM crashes on Linux

2004-12-20 Thread Wade Chandler
Greg Lappen wrote: Hello- Has anyone had a problem with Tomcat 5.0.28 crashing on Linux with no error messages? My production server running with JDK 1.4.2_06, RedHat EL 3.0 just crashes, no core dump, no errors in catalina.out, no clues. Sometimes it goes for days, sometimes it happens severa

Tomcat/JVM crashes on Linux

2004-12-20 Thread Greg Lappen
Hello- Has anyone had a problem with Tomcat 5.0.28 crashing on Linux with no error messages? My production server running with JDK 1.4.2_06, RedHat EL 3.0 just crashes, no core dump, no errors in catalina.out, no clues. Sometimes it goes for days, sometimes it happens several times in one day.