Re: Java Crash
Chris, This is very helpful. It strongly suggests the issue is memory management, not JFreeChart. I'd put my money on bad hardware. Every single time I've seen a release version of a JVM fail, it's because of bad memory, CPU, motherboard, or the combination thereof. I recommend trying the same code and configuration on a separate physical machine to see if that might be the problem. Does Mac have anything like memtest86? Can you even run that on x86-based Macs? My initial presumption was bad memory, but after running a very intensive memory test (provided by Apple), no problems were found. Also, no other process results in a JVM crash. Only when JFreeChart is run does the JVM crash. This is an X-Serve, dual core intel that has 12 gigs of RAM running OS X 10.5. Stephen Caine Soft Breeze Systems, LLC - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Java Crash
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Stephen, Stephen Caine wrote: This is very helpful. It strongly suggests the issue is memory management, not JFreeChart. I'd put my money on bad hardware. Every single time I've seen a release version of a JVM fail, it's because of bad memory, CPU, motherboard, or the combination thereof. I recommend trying the same code and configuration on a separate physical machine to see if that might be the problem. Does Mac have anything like memtest86? Can you even run that on x86-based Macs? Good luck, - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkl/vXwACgkQ9CaO5/Lv0PBg5wCgq9MKkXlPSWT/tqGJ7nDFycQ7 Go8An2NhKzoaBhbpKXhm5wtpdqOt5viI =MXkp -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Java Crash
that is almost certainly an Apple Java issue. If by charting, you mean graphics, then even more so. The Java2D api on Mac still has bugs that will crash. But you can't be certain unless you test ur webapp on a windows machine. On Fri, Jan 23, 2009 at 11:03 AM, Stephen Caine step...@commongrnd.comwrote: All, Whenever I attempt to access a charting jsp, I get an invalid memory access error and the JVM just crashes. Here are the relevant portions of the java crash log. Any thoughts would be appreciated. Is this an Apple Java issue?? Stephen Caine CommonGround Softworks, Inc. ___ Process: java [67620] Path: /System/Library/Frameworks/JavaVM.framework/Versions/1.6/Home/bin/java Identifier: java Version: ??? (???) Code Type: X86-64 (Native) Parent Process: launchd [1] Date/Time: 2009-01-21 14:53:08.281 -0500 OS Version: Mac OS X Server 10.5.5 (9F33) Report Version: 6 Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x0001b6f272f8 Crashed Thread: 28 Application Specific Information: Java information: Exception type: Bus Error (0xa) at pc=0x0001010a633d Java VM: Java HotSpot(TM) 64-Bit Server VM (1.6.0_07-b06-57 mixed mode macosx-amd64) Heap PSYoungGen total 690496K, used 680383K [0x00018a56, 0x0001b500, 0x0001b500) eden space 684160K, 98% used [0x00018a56,0x0001b37a0de0,0x0001b418) from space 6336K, 99% used [0x0001b418,0x0001b47aeeb0,0x0001b47b) to space 8384K, 0% used [0x0001b47d,0x0001b47d,0x0001b500) PSOldGentotal 1398144K, used 1296068K [0x00013500, 0x00018a56, 0x00018a56) object space 1398144K, 92% used [0x00013500,0x0001841b11d0,0x00018a56) PSPermGen total 437248K, used 431571K [0x00010500, 0x00011fb0, 0x00013500) object space 437248K, 98% used [0x00010500,0x00011f574c70,0x00011fb0) Virtual Machine Arguments: JVM Args: -Xserver -Xms2048m -Xmx2048m -XX:+MaxFDLimit -XX:MaxPermSize=768m -XX:+UseParallelGC -Djava.awt.headless=true -Djava.endorsed.dirs=/Applications/Qilan 3/Tomcat_Qilan//common/endorsed -Dcatalina.base=/Applications/Qilan 3/Tomcat_Qilan/ -Dcatalina.home=/Applications/Qilan 3/Tomcat_Qilan/ -Djava.io.tmpdir=/Applications/Qilan 3/Tomcat_Qilan//temp Java Command: org.apache.catalina.startup.Bootstrap start Launcher Type: SUN_STANDARD Physical Memory: Page Size = 4k, Total = 2048M, Free = 1811M - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Java Crash
Jonathan, that is almost certainly an Apple Java issue. If by charting, you mean graphics, then even more so. The Java2D api on Mac still has bugs that will crash. I am sorry that I did not specify the charting jsp. We are using the ones provided by CEWolf (based on JFreeChart). Stephen Caine - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Java Crash
From: Jonathan Mast [mailto:jhmast.develo...@gmail.com] Subject: Re: Java Crash that is almost certainly an Apple Java issue. Note also the excessive heap size vs installed RAM. This is guaranteed to induce serious paging, and I don't know if the MAC OS is robust enough to deal with a lot of page thrashing. Given that the webapp runs correctly for some time before the JVM crashes, I would certainly try reducing the heap size to eliminate paging mismanagement as the potential cause. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Java Crash
Just a datapoint: I have a webapp which does basic graph construction using JFreeChart which has been running in development mode on a Mac OS X 10.5.6 under both Tomcat 5.5.26 and 6.0.18 for many months, and has never produced such a crash. On Jan 23, 2009, at 1:56 PM, Stephen Caine wrote: Jonathan, that is almost certainly an Apple Java issue. If by charting, you mean graphics, then even more so. The Java2D api on Mac still has bugs that will crash. I am sorry that I did not specify the charting jsp. We are using the ones provided by CEWolf (based on JFreeChart). Stephen Caine - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Java Crash
Ken, This is very helpful. It strongly suggests the issue is memory management, not JFreeChart. Thanks, Stephen On Jan 23, 2009, at 2:28 PM, Ken Bowen wrote: Just a datapoint: I have a webapp which does basic graph construction using JFreeChart which has been running in development mode on a Mac OS X 10.5.6 under both Tomcat 5.5.26 and 6.0.18 for many months, and has never produced such a crash. On Jan 23, 2009, at 1:56 PM, Stephen Caine wrote: Jonathan, that is almost certainly an Apple Java issue. If by charting, you mean graphics, then even more so. The Java2D api on Mac still has bugs that will crash. I am sorry that I did not specify the charting jsp. We are using the ones provided by CEWolf (based on JFreeChart). Stephen Caine - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
