RE: -verbose:gc
i'm guessing a garbage collect reclaimed 64896K and the first two numbers are the before and after? [GC 28827K-22937K(64896K), 0.0062130 secs] ADC -Original Message- From: Derek Mahar [mailto:[EMAIL PROTECTED] Sent: 22 January 2004 15:04 To: Tomcat Users List Subject: -verbose:gc Would someone please decipher the following line in $CATALINA_HOME/logs/catalina.out? [GC 28827K-22937K(64896K), 0.0062130 secs] Thank you, Derek - Derek Mahar Software Developer Penson Financial Services Canada 360 St-Jacques St West, 12th Floor Montreal QC H2Y 1P5 514.841.9665 x212 Phone 514.841.3750 Fax - - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] FONT SIZE=1 FACE=VERDANA,ARIAL COLOR=BLUE --- QAS Ltd. Developers of QuickAddress Software a href=http://www.qas.com;www.qas.com/a Registered in England: No 2582055 Registered in Australia: No 082 851 474 --- /FONT - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: -verbose:gc
See http://java.sun.com/docs/hotspot/gc1.4.2/index.html#2.2. Measurement|outline dwh Derek Mahar wrote: Would someone please decipher the following line in $CATALINA_HOME/logs/catalina.out? [GC 28827K-22937K(64896K), 0.0062130 secs] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: -verbose:gc
The used memory has changed from 28827K to 22937K. (~6 have been freed) The total memory is 64896K. It took 6.2 ms to perform the gc. -Original Message- From: Derek Mahar [mailto:[EMAIL PROTECTED] Sent: Thursday, January 22, 2004 4:04 PM To: Tomcat Users List Subject: -verbose:gc Would someone please decipher the following line in $CATALINA_HOME/logs/catalina.out? [GC 28827K-22937K(64896K), 0.0062130 secs] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: -verbose:gc
Sorry little typo: (~6MB have been freed) -Original Message- From: Ralph Einfeldt Sent: Thursday, January 22, 2004 4:08 PM To: Tomcat Users List Subject: RE: -verbose:gc The used memory has changed from 28827K to 22937K. (~6 have been freed) The total memory is 64896K. It took 6.2 ms to perform the gc. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: -verbose:gc
-Original Message- From: Derek Mahar [mailto:[EMAIL PROTECTED] Sent: Thursday, January 22, 2004 4:04 PM Would someone please decipher the following line in $CATALINA_HOME/logs/catalina.out? [GC 28827K-22937K(64896K), 0.0062130 secs] A GC (not a Full GC) freed 6MB of unused garbage memory. Your Jvm currently have 64MB of memory allocated (Sun Jvm with default parameters, probably), and your application uses about 22937K (only a full GC will give you the exact value used at a time), you could increase it by using ms and mx parameters, but your application really don't need it at this step. François. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: -verbose:gc
Howdy, With one addition: it was an incremental (or young generation) garbage collection, not a full one. Yoav Shapira Millennium ChemInformatics -Original Message- From: Ralph Einfeldt [mailto:[EMAIL PROTECTED] Sent: Thursday, January 22, 2004 10:10 AM To: Tomcat Users List Subject: RE: -verbose:gc Sorry little typo: (~6MB have been freed) -Original Message- From: Ralph Einfeldt Sent: Thursday, January 22, 2004 4:08 PM To: Tomcat Users List Subject: RE: -verbose:gc The used memory has changed from 28827K to 22937K. (~6 have been freed) The total memory is 64896K. It took 6.2 ms to perform the gc. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: -verbose:gc
Thank you for your replies. Does my most recent garbage collector report conflict with what top reports for the memory size of the Tomcat JVM process? The garbage collector indicates that the JVM consumes 64 MB, but top reports that the actual process size is 127 MB: [GC 54170K-52843K(64896K), 0.1261600 secs] PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND 605 tomcat25 0 127M 127M 31524 S 1.1 25.4 5:10 java I have set CATALINA_OPTS=-server -Xms64m -Xmx128m -Xss128k -verbose:gc. Derek -Original Message- From: Francois JEANMOUGIN [mailto:[EMAIL PROTECTED] Sent: January 22, 2004 10:14 AM To: Tomcat Users List Subject: RE: -verbose:gc -Original Message- From: Derek Mahar [mailto:[EMAIL PROTECTED] Sent: Thursday, January 22, 2004 4:04 PM Would someone please decipher the following line in $CATALINA_HOME/logs/catalina.out? [GC 28827K-22937K(64896K), 0.0062130 secs] A GC (not a Full GC) freed 6MB of unused garbage memory. Your Jvm currently have 64MB of memory allocated (Sun Jvm with default parameters, probably), and your application uses about 22937K (only a full GC will give you the exact value used at a time), you could increase it by using ms and mx parameters, but your application really don't need it at this step. François. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: -verbose:gc
Howdy, Does my most recent garbage collector report conflict with what top reports for the memory size of the Tomcat JVM process? The garbage collector indicates that the JVM consumes 64 MB, but top reports that the actual process size is 127 MB: It won't hurt to search the archives for the differences between OS-level memory reporting tools, like top and the windows task manager, and executable-level tools (the JVM in this case). This has been discussed and explained many times in the past. There's no conflict as the two are not expected to agree. The top command includes overhead space far beyond the heap. Your GC snapshot sent to the list earlier is just that: the portion of the heap currently handled by the garbage collector. The heap could've grown right after the snapshot you sent to the list. There are also parts of the JVM taking memory not shown on the verbose:gc output, and then there's the OS-level memory consumption beyond the JVM itself. Yoav Shapira This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
