We recently (within the last few months) decided to try prudent mode on an NFS mounted file system. We saw apparent deadlocks but in reality it ended up being a bug in the Solaris NFS code (non java) that made the locks very slow (not deadlocked). It was on Solaris 10.x x86. Oracle identified it as a bug and came back with a patch, but we had since given up on NFS locking. If you're familiar with C and running commands like "truss", you might also want to verify NFS locking support with java and logback out of the picture. I can send a test C program if desired.
-casey On 12/28/11 3:19 PM, "[email protected]" <[email protected]> wrote: We are getting stuck threads, any advice? ####<Dec 28, 2011 9:29:30 AM EST> <Error> <WebLogicServer> <[obfuscated]> <soa_server1> <[STANDBY] ExecuteThread: '395' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <8f08ad23754ca371:-6015b447:13484e5a335:-7ffe-0000000000005269> <1325082570435> <BEA-000337> <[STUCK] ExecuteThread: '261' for queue: 'weblogic.kernel.Default (self-tuning)' has been busy for "707" seconds working on the request "weblogic.servlet.internal.ServletRequestImpl@429fb0e6[ POST /Custom[obfuscated]Service/Custom[obfuscated]Port HTTP/1.1 TE: trailers, deflate, gzip, compress User-Agent: Oracle HTTPClient Version 10h SOAPAction: "null" Authorization: [obfuscated] Accept-Encoding: gzip, x-gzip, compress, x-compress ECID-Context: 1.a161c6d66e04e744:-2716b1b5:1346c7f4437:-7ffe-00000000000a19aa;kXhDsLK[ obfuscated]KIVPToLQSJLQSqPRO_GNRmKS Content-type: text/xml; charset=UTF-8 Content-Length: 3607 Connection: Keep-Alive Proxy-Client-IP: [obfuscated] X-Forwarded-For: [obfuscated] X-WebLogic-KeepAliveSecs: 30 X-WebLogic-Force-JVMID: unset X-WebLogic-Request-ClusterInfo: true ]", which is more than the configured time (StuckThreadMaxTime) of "600" seconds. Stack trace: Thread-1020 "[STUCK] ExecuteThread: '261' for queue: 'weblogic.kernel.Default (self-tuning)'" <alive, suspended, blocked, priority=1, DAEMON> { -- Blocked trying to get lock: java.lang.Object@489d327d[fat lock] ch.qos.logback.core.OutputStreamAppender.subAppend(OutputStreamAppender. java:205) ch.qos.logback.core.rolling.RollingFileAppender.subAppend(RollingFileApp ender.java:149) ch.qos.logback.core.OutputStreamAppender.append(OutputStreamAppender.jav a:104) ch.qos.logback.core.UnsynchronizedAppenderBase.doAppend(UnsynchronizedAp penderBase.java:67) ch.qos.logback.core.spi.AppenderAttachableImpl.appendLoopOnAppenders(App enderAttachableImpl.java:51) ch.qos.logback.classic.Logger.appendLoopOnAppenders(Logger.java:281) ch.qos.logback.classic.Logger.callAppenders(Logger.java:267) ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:468 ) ch.qos.logback.classic.Logger.filterAndLog_2(Logger.java:450) ch.qos.logback.classic.Logger.debug(Logger.java:559) The information contained in this e-mail message is intended for the use of the recipient(s) named above and is privileged and confidential. If you are not the intended recipient, you are formally notified that you have received this message in error and that any review, dissemination, distribution, or copying of the message is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the original message.-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of ceki Sent: Mittwoch, 21. Dezember 2011 18:55 To: logback users list Subject: Re: [logback-user] Prudent [sic!] mode logging to NFS-mounted file Logback should have complained about the unknown property. Anyway, let us know if prudent mode work with NFS. (Prudent mode under NFS was tested a long time ago and if I remember correctly it worked fine.) -- Ceki http://twitter.com/#!/ceki On 21.12.2011 18:40, [email protected] wrote: > Thank you very much for the fast answer. I feel so stupid. > > -----Original Message----- > From: [email protected] [mailto:[email protected]] > On Behalf Of ceki > Sent: Mittwoch, 21. Dezember 2011 17:49 > To: logback users list > Subject: Re: [logback-user] Prudent mode logging to NFS-mounted file > > > Check spelling of prudent (not prudend). > _______________________________________________ Logback-user mailing list [email protected] http://mailman.qos.ch/mailman/listinfo/logback-user -------------------------------------------------------------------------- _______________________________________________ Logback-user mailing list [email protected] http://mailman.qos.ch/mailman/listinfo/logback-user _______________________________________________ Logback-user mailing list [email protected] http://mailman.qos.ch/mailman/listinfo/logback-user
