K, you may be able to use a TPROF trace and PTDV to achieve what you want. We have used that before to trace what is happening in websphere when performance has gone doo-lally. Search for "Collecting and analyzing an IBM iSeries TPROF trace" in Google, that will point you to a IBM white paper PDF that describes how to set it up, and import the data into PTDV. Once you get used to looking at the data, it will take you right down to the class/method/statement level, so you can determine where in your code the performance is being chewed up cheers Colin.W On 10/10/06, Raikov, Leonid <RaikovL1@xxxxxxxxx> wrote:
I do know of a nice Java tracing tool for System i, but I don't think I can advertise it in the list. Please contact me offline for the details. There is obviously JobWatcher from IBM, but it's not easy to use. Lo Best Regards, Leonid Leonid Raikov Principal Consultant ________________________________________________________ Misys Banking Systems Key West / Windsor Road / Slough / SL1 2DW T +44 (0)1753 708 053 M +44 (0)7903 181 030 raikovl1@xxxxxxxxx www.misys.com ________________________________________________________________ This email and any attachments have been scanned for known viruses using multiple scanners. We believe that this email and any attachments are virus free, however the recipient must take full responsibility for virus checking. This email message is intended for the named recipient only. It may be privileged and/or confidential. If you are not the intended named recipient of this email then you should not copy it or use it for any purpose, nor disclose its contents to any other person. You should contact Misys Banking Systems so that we can take appropriate action at no cost to yourself. www.misys.com <http://www.misys.com/> -----Original Message----- From: TitanRebel [mailto:titanrebel@xxxxxxxxxxx] Sent: 10 October 2006 00:14 To: Java Programming on and around the iSeries / AS400 Subject: analysis of QJVACMDSRV? We are running Tomcat 4.1 on the iSeries under 1.3 JVM. I have a problem with QJVACMDSRV periodically taking up large amounts of CPU for an extended period of time. Usually, when this happens, and I try to end the job, it goes into a THDW status for an extended period of time. In WRKSYSACT it seems to be several different threads contributing to the problem. Is there a tool that I can use to analyze what is causing the problem? Thanks for any info. you can give me to help figure it out. K. Kennedy -- This is the Java Programming on and around the iSeries / AS400 (JAVA400-L) mailing list To post a message email: JAVA400-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/java400-l or email: JAVA400-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at http://archive.midrange.com/java400-l. -- This is the Java Programming on and around the iSeries / AS400 (JAVA400-L) mailing list To post a message email: JAVA400-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/java400-l or email: JAVA400-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at http://archive.midrange.com/java400-l.
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