RE: HPUX and tomcat help!
Allen, What do you set for your memory parameters in catalina opts? an example from out setup is if [ -z $CATALINA_OPTS ] ; then CATALINA_OPTS=-XdoCloseWithReadPending -Xms256m -Xmn100m -Xmx256m -Xverbosegc:file=/tomca t/logs/gc.out export CATALINA_OPTS echo start: CATALINA_OPTS set to $CATALINA_OPTS fi I have seen tomcat stop because of garbage collection issues if -Xms256m and -Xmx256m are not equal. This usually occurs for webapps that very quickly create large temporary objects. The new generation heap just cannot expand fast enough and tomcat will stop. without -XdoCloseWithReadPending, tomcat will not shutdown. As far as I can tell it is due to a connector still binding to a port in some manner. Also, are your patches up to date? I list some recommended kernal paramters that we try to adhere to for our servers, maxdsiz we have found is very important. If set too small you will get hotspot errors and the JVM will crash. maxusers512 nproc 2068 max_thread_proc 3000 nkthread6000 nfile 3 maxfiles2048 maxfiles_lim2048 ncallout6000 maxdsiz 2063835136 Jeff -Original Message- From: Byington, Allen [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 25, 2003 7:43 AM To: '[EMAIL PROTECTED]' Subject: HPUX and tomcat help! I'm having a problem keeping tomcat running on my hpux11 systems. The server just stops responding and no log entries are made. To get things going again, I have to do a kill on the tomcat process and start it back up. The configration of the server looks like this: HP-UX 11/64 bit java 1.4 tomcat 4.1.18 (standalone) apache 2.0.43 Any help would be appreciated. Thanks Allen - 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: HPUX and tomcat help!
Can you use a 1.3 JVM with all the latest OS patches? I'd be surprised if a 1.4 JVM was production worthy for HPUX. (YMMV) OS patches are the most important part. Also make sure enableHost lookups are off. And when tomcat freezes - perform a thread dump to look for anything potentially insightful. (Usually its just a mess of data but sometimes a nugget of gold there) -Tim Byington, Allen wrote: I'm having a problem keeping tomcat running on my hpux11 systems. The server just stops responding and no log entries are made. To get things going again, I have to do a kill on the tomcat process and start it back up. The configration of the server looks like this: HP-UX 11/64 bit java 1.4 tomcat 4.1.18 (standalone) apache 2.0.43 Any help would be appreciated. Thanks Allen - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: HPUX and tomcat help!
Thanks for the help! I went ahead and added in the catalina opts (just one more thing I didn't know about) and restarted the server. I have my SA looking into the kernel params for me. I'll let you all know if that fixes the problem. As far as the patches are concerned, I'm using the 4.1.18 binary version from the jakarta download site. Thanks Again! Allen -Original Message- From: PELOQUIN,JEFFREY (HP-Boise,ex1) [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 25, 2003 9:28 AM To: 'Tomcat Users List' Subject: RE: HPUX and tomcat help! Allen, What do you set for your memory parameters in catalina opts? an example from out setup is if [ -z $CATALINA_OPTS ] ; then CATALINA_OPTS=-XdoCloseWithReadPending -Xms256m -Xmn100m -Xmx256m -Xverbosegc:file=/tomca t/logs/gc.out export CATALINA_OPTS echo start: CATALINA_OPTS set to $CATALINA_OPTS fi I have seen tomcat stop because of garbage collection issues if -Xms256m and -Xmx256m are not equal. This usually occurs for webapps that very quickly create large temporary objects. The new generation heap just cannot expand fast enough and tomcat will stop. without -XdoCloseWithReadPending, tomcat will not shutdown. As far as I can tell it is due to a connector still binding to a port in some manner. Also, are your patches up to date? I list some recommended kernal paramters that we try to adhere to for our servers, maxdsiz we have found is very important. If set too small you will get hotspot errors and the JVM will crash. maxusers512 nproc 2068 max_thread_proc 3000 nkthread6000 nfile 3 maxfiles2048 maxfiles_lim2048 ncallout6000 maxdsiz 2063835136 Jeff -Original Message- From: Byington, Allen [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 25, 2003 7:43 AM To: '[EMAIL PROTECTED]' Subject: HPUX and tomcat help! I'm having a problem keeping tomcat running on my hpux11 systems. The server just stops responding and no log entries are made. To get things going again, I have to do a kill on the tomcat process and start it back up. The configration of the server looks like this: HP-UX 11/64 bit java 1.4 tomcat 4.1.18 (standalone) apache 2.0.43 Any help would be appreciated. Thanks Allen - 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] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: HPUX and tomcat help!
Allen, I was referring to the HP patches found at http://www.hp.com/products1/unix/java/patches/index.html Also, make sure you are using the latest version of HP Java 1.4 found at http://www.hp.com/products1/unix/java/java2/sdkrte14/infolibrary/index.html I have not personally used 1.4 as I am still trying to migrate our apps to 1.3. Jeff -Original Message- From: Byington, Allen [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 25, 2003 8:59 AM To: 'Tomcat Users List' Subject: RE: HPUX and tomcat help! Thanks for the help! I went ahead and added in the catalina opts (just one more thing I didn't know about) and restarted the server. I have my SA looking into the kernel params for me. I'll let you all know if that fixes the problem. As far as the patches are concerned, I'm using the 4.1.18 binary version from the jakarta download site. Thanks Again! Allen -Original Message- From: PELOQUIN,JEFFREY (HP-Boise,ex1) [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 25, 2003 9:28 AM To: 'Tomcat Users List' Subject: RE: HPUX and tomcat help! Allen, What do you set for your memory parameters in catalina opts? an example from out setup is if [ -z $CATALINA_OPTS ] ; then CATALINA_OPTS=-XdoCloseWithReadPending -Xms256m -Xmn100m -Xmx256m -Xverbosegc:file=/tomca t/logs/gc.out export CATALINA_OPTS echo start: CATALINA_OPTS set to $CATALINA_OPTS fi I have seen tomcat stop because of garbage collection issues if -Xms256m and -Xmx256m are not equal. This usually occurs for webapps that very quickly create large temporary objects. The new generation heap just cannot expand fast enough and tomcat will stop. without -XdoCloseWithReadPending, tomcat will not shutdown. As far as I can tell it is due to a connector still binding to a port in some manner. Also, are your patches up to date? I list some recommended kernal paramters that we try to adhere to for our servers, maxdsiz we have found is very important. If set too small you will get hotspot errors and the JVM will crash. maxusers512 nproc 2068 max_thread_proc 3000 nkthread6000 nfile 3 maxfiles2048 maxfiles_lim2048 ncallout6000 maxdsiz 2063835136 Jeff -Original Message- From: Byington, Allen [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 25, 2003 7:43 AM To: '[EMAIL PROTECTED]' Subject: HPUX and tomcat help! I'm having a problem keeping tomcat running on my hpux11 systems. The server just stops responding and no log entries are made. To get things going again, I have to do a kill on the tomcat process and start it back up. The configration of the server looks like this: HP-UX 11/64 bit java 1.4 tomcat 4.1.18 (standalone) apache 2.0.43 Any help would be appreciated. Thanks Allen - 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] - 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: HPUX and tomcat help!
we have the same problem in the past , and the solution: just switch back to java1.3 and the problem is gone xyb Byington, Allen wrote: I'm having a problem keeping tomcat running on my hpux11 systems. The server just stops responding and no log entries are made. To get things going again, I have to do a kill on the tomcat process and start it back up. The configration of the server looks like this: HP-UX 11/64 bit java 1.4 tomcat 4.1.18 (standalone) apache 2.0.43 Any help would be appreciated. Thanks Allen - 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]
