Re: Tomcat keeps growing in size on Win32
Tomcat really uses File.deleteOnExit()? This method has a known memory leak (not only on win32) for quite some time. See: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4513817 Ed Hamilton wrote: Thanks, Robson, for the reply. I have all the latest versions of everything: Tomcat: 5.5.9 JDSK: 1.5.0.03 JDBC: 3.18a Isapi Redirector: 1.2.13 There is no website/database activity, just tomcat running. I believe it's related to the other posting I made about every-10-seconds-tomcat-scans-directories. I believe I have it narrowed down to java.io.File.DeleteOnExit that tomcat uses in executePartialPut in DefaultServlet.java. Apparently, this java routine has a known problem on Win32 systems. I've been asked by one of the tomcat guys to get some hard evidence, but I don't have time to tear the tomcat source code apart looking for this and was hoping some of the other users out there are seeing the same problem. Regards all, Ed - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Tomcat keeps growing in size on Win32
Yeah, it's in the file mentioned, but I have no idea if it ever gets called. I think watchedresource creates a temp file via this routine, based on some profiling work I did, but it will take a better Tomcat user/developer than me to isolate it. Ed -Original Message- From: Christoph Kutzinski [mailto:[EMAIL PROTECTED] Sent: Tuesday, June 14, 2005 12:14 AM To: Tomcat Users List Subject: Re: Tomcat keeps growing in size on Win32 Tomcat really uses File.deleteOnExit()? This method has a known memory leak (not only on win32) for quite some time. See: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4513817 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat keeps growing in size on Win32
By the way, having read the bug report discussion, I think it's a bit misleading to say that File.deleteOnExit HAS a memory leak - it's more accurate to say that __by definition__, it IS a memory leak for a long running system. But at the same time, it only leaks a fixed amount of memory in proportion to the number of times it is called, (not how long ago the last call was). -- Tim -Original Message- From: Christoph Kutzinski [mailto:[EMAIL PROTECTED] Sent: Tuesday, June 14, 2005 12:14 AM To: Tomcat Users List Subject: Re: Tomcat keeps growing in size on Win32 Tomcat really uses File.deleteOnExit()? This method has a known memory leak (not only on win32) for quite some time. See: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4513817 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat keeps growing in size on Win32
Hi there! Please check: Tomcat version, JSDK (or JRE) version, JDBC Drivers. Probably one of these (maybe all of them) has a bug. It sounds like Memory Leaking. Last time I had this problem I updated JDBC Drivers and it worked. Good luck! Robson Franca Ed Hamilton wrote: Is anybody who is running Tomcat on a Win32 installation seeing a slow growth in memory usage by Tomcat? My system increases threefold over a period of 2 to 3. Even with all my websites shutdown and no user activity at all, Tomcat keeps growing in size, until I have to reboot to recover the lost system memory. Regards, Ed Hamilton - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Tomcat keeps growing in size on Win32
Thanks, Robson, for the reply. I have all the latest versions of everything: Tomcat: 5.5.9 JDSK: 1.5.0.03 JDBC: 3.18a Isapi Redirector: 1.2.13 There is no website/database activity, just tomcat running. I believe it's related to the other posting I made about every-10-seconds-tomcat-scans-directories. I believe I have it narrowed down to java.io.File.DeleteOnExit that tomcat uses in executePartialPut in DefaultServlet.java. Apparently, this java routine has a known problem on Win32 systems. I've been asked by one of the tomcat guys to get some hard evidence, but I don't have time to tear the tomcat source code apart looking for this and was hoping some of the other users out there are seeing the same problem. Regards all, Ed - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Tomcat keeps growing in size on Win32
Are you actually running out of memory? Or is the heap just growing? Garbage collection is a bit arbitrary and may not occur until there is a need. HTH - Richard -Original Message- From: Ed Hamilton [mailto:[EMAIL PROTECTED] Sent: Monday, June 13, 2005 4:39 PM To: 'Tomcat Users List' Subject: RE: Tomcat keeps growing in size on Win32 Thanks, Robson, for the reply. I have all the latest versions of everything: Tomcat: 5.5.9 JDSK: 1.5.0.03 JDBC: 3.18a Isapi Redirector: 1.2.13 There is no website/database activity, just tomcat running. I believe it's related to the other posting I made about every-10-seconds-tomcat-scans-directories. I believe I have it narrowed down to java.io.File.DeleteOnExit that tomcat uses in executePartialPut in DefaultServlet.java. Apparently, this java routine has a known problem on Win32 systems. I've been asked by one of the tomcat guys to get some hard evidence, but I don't have time to tear the tomcat source code apart looking for this and was hoping some of the other users out there are seeing the same problem. Regards all, Ed - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Tomcat keeps growing in size on Win32
Are you actually running out of memory? Or is the heap just growing? Garbage collection is a bit arbitrary and may not occur until there is a need. HTH - Richard -Original Message- From: Ed Hamilton [mailto:[EMAIL PROTECTED] Sent: Monday, June 13, 2005 4:39 PM To: 'Tomcat Users List' Subject: RE: Tomcat keeps growing in size on Win32 Thanks, Robson, for the reply. I have all the latest versions of everything: Tomcat: 5.5.9 JDSK: 1.5.0.03 JDBC: 3.18a Isapi Redirector: 1.2.13 There is no website/database activity, just tomcat running. I believe it's related to the other posting I made about every-10-seconds-tomcat-scans-directories. I believe I have it narrowed down to java.io.File.DeleteOnExit that tomcat uses in executePartialPut in DefaultServlet.java. Apparently, this java routine has a known problem on Win32 systems. I've been asked by one of the tomcat guys to get some hard evidence, but I don't have time to tear the tomcat source code apart looking for this and was hoping some of the other users out there are seeing the same problem. Regards all, Ed - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Tomcat keeps growing in size on Win32
Richard: Looking at Tomcat with the task manager, it grows unchecked from a boot value of about 45MB to however big I let it go; biggest I saw was 250MB after about 6 days. At that point it's affecting system performance and I have to reboot. I'm pretty sure the GC would have run in there somewhere. So, yes, the heap is growing, if that is what the task manager sees as Tomcat's memory usage climbing (I think so); it will do so until I run out of memory - I haven't let it get that far, though. Thanks, Ed -Original Message- From: Richard Mixon (qwest) [mailto:[EMAIL PROTECTED] Sent: Monday, June 13, 2005 5:15 PM To: 'Tomcat Users List' Subject: RE: Tomcat keeps growing in size on Win32 Are you actually running out of memory? Or is the heap just growing? Garbage collection is a bit arbitrary and may not occur until there is a need. HTH - Richard - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Tomcat keeps growing in size on Win32
Ed. Why don't you set a maximum heap size and see if it garbage collects when it hits that size. Sounds like your application does not need that much memory so try setting it to something like either: JAVA_OPTS=-Xms64m -Xmx128m Or CATALINA_OPTS=-Xms64m -Xmx128m This assumes you are starting Tomcat using the bin/catalina.bat script. This will start it off with 64MB and let it grow to about 128MB (probably a bit more in reality). It should garbage collect at that point. If you are running Java 1.5 you can use the included Jconsole tool to monitor memory usage. It will show you a saw tooth pattern if the garbage collection is working properly. HTH - Richard -Original Message- From: Ed Hamilton [mailto:[EMAIL PROTECTED] Sent: Monday, June 13, 2005 6:47 PM To: 'Tomcat Users List' Subject: RE: Tomcat keeps growing in size on Win32 Richard: Looking at Tomcat with the task manager, it grows unchecked from a boot value of about 45MB to however big I let it go; biggest I saw was 250MB after about 6 days. At that point it's affecting system performance and I have to reboot. I'm pretty sure the GC would have run in there somewhere. So, yes, the heap is growing, if that is what the task manager sees as Tomcat's memory usage climbing (I think so); it will do so until I run out of memory - I haven't let it get that far, though. Thanks, Ed -Original Message- From: Richard Mixon (qwest) [mailto:[EMAIL PROTECTED] Sent: Monday, June 13, 2005 5:15 PM To: 'Tomcat Users List' Subject: RE: Tomcat keeps growing in size on Win32 Are you actually running out of memory? Or is the heap just growing? Garbage collection is a bit arbitrary and may not occur until there is a need. HTH - Richard - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Tomcat keeps growing in size on Win32
Ed. Why don't you set a maximum heap size and see if it garbage collects when it hits that size. Sounds like your application does not need that much memory so try setting it to something like either: JAVA_OPTS=-Xms64m -Xmx128m Or CATALINA_OPTS=-Xms64m -Xmx128m This assumes you are starting Tomcat using the bin/catalina.bat script. This will start it off with 64MB and let it grow to about 128MB (probably a bit more in reality). It should garbage collect at that point. If you are running Java 1.5 you can use the included Jconsole tool to monitor memory usage. It will show you a saw tooth pattern if the garbage collection is working properly. HTH - Richard -Original Message- From: Ed Hamilton [mailto:[EMAIL PROTECTED] Sent: Monday, June 13, 2005 6:47 PM To: 'Tomcat Users List' Subject: RE: Tomcat keeps growing in size on Win32 Richard: Looking at Tomcat with the task manager, it grows unchecked from a boot value of about 45MB to however big I let it go; biggest I saw was 250MB after about 6 days. At that point it's affecting system performance and I have to reboot. I'm pretty sure the GC would have run in there somewhere. So, yes, the heap is growing, if that is what the task manager sees as Tomcat's memory usage climbing (I think so); it will do so until I run out of memory - I haven't let it get that far, though. Thanks, Ed -Original Message- From: Richard Mixon (qwest) [mailto:[EMAIL PROTECTED] Sent: Monday, June 13, 2005 5:15 PM To: 'Tomcat Users List' Subject: RE: Tomcat keeps growing in size on Win32 Are you actually running out of memory? Or is the heap just growing? Garbage collection is a bit arbitrary and may not occur until there is a need. HTH - Richard - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
