RE: Shutdown.sh doesn't. At least not reliably. (7.0.25)
From: James Lampert [mailto:jam...@touchtonecorp.com] Subject: Shutdown.sh doesn't. At least not reliably. (7.0.25) Or where I should look for indications of what it could be? Can you take a thread dump of the Tomcat process after shutdown.sh has been used? http://wiki.apache.org/tomcat/HowTo#How_do_I_obtain_a_thread_dump_of_my_running_webapp_.3F Can you try it on more recent Tomcat? - 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: Shutdown.sh doesn't. At least not reliably. (7.0.25)
If you take a thread dump you'll be able to see the state of both Tomcat's threads and your own application's threads to see where it's hanging. -Original Message- From: James Lampert [mailto:jam...@touchtonecorp.com] Sent: Tuesday, November 27, 2012 9:10 AM To: Tomcat Users List Subject: Shutdown.sh doesn't. At least not reliably. (7.0.25) Running Tomcat on various AS/400s (V6R1 or later OS), we've found that shutdown.sh doesn't reliably shut down the server, and we frequently have to shut it down forcibly (i.e., finding CATALINA on a WRKACTJOB, and giving it a 4 with OPTION(*IMMED)). Port 8009 does appear to be open before we call shutdown.sh, and it does appear to be closed after we call it. Any idea what the problem could be? Or where I should look for indications of what it could be? -- JHHL - 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: Shutdown.sh doesn't. At least not reliably. (7.0.25)
2012/11/27 James Lampert jam...@touchtonecorp.com: Running Tomcat on various AS/400s (V6R1 or later OS), we've found that shutdown.sh doesn't reliably shut down the server, and we frequently have to shut it down forcibly (i.e., finding CATALINA on a WRKACTJOB, and giving it a 4 with OPTION(*IMMED)). Port 8009 does appear to be open before we call shutdown.sh, and it does appear to be closed after we call it. Any idea what the problem could be? Or where I should look for indications of what it could be? 1. catalina.sh and shutdown.sh should be able to kill a hung process, but only if you call them with -force and if you have CATALINA_PID variable defined in your configuration. Do you have CATALINA_PID configured? A clean shutdown might be impossible if Tomcat encounters an OutOfMemoryError. 2. Shutdown command is sent to port 8005. (8009 is a port used by AJP protocol connector). Best regards, Konstantin Kolinko - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Shutdown.sh doesn't. At least not reliably. (7.0.25)
Konstantin Kolinko wrote: 2. Shutdown command is sent to port 8005. (8009 is a port used by AJP protocol connector). Thanks. That at least clears up a misconception on my part. Researching it cleared up another misconception on my part: that the Catalina job directly owns the ports. Actually, the ports are owned by a QP0ZSPWT job (that is itself probably owned by the Catalina job.) Once I know how to get a thread dump on an AS/400 (the link didn't cover that; I've got a question out to the Java-400 list at Midrange.com about that), I'll try another shutdown/restart on our box, and see what happens to port 8005 and the QP0ZSPWT job. -- JHHL - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Shutdown.sh doesn't. At least not reliably. (7.0.25)
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 James, On 11/27/12 1:13 PM, James Lampert wrote: Konstantin Kolinko wrote: 2. Shutdown command is sent to port 8005. (8009 is a port used by AJP protocol connector). Thanks. That at least clears up a misconception on my part. Researching it cleared up another misconception on my part: that the Catalina job directly owns the ports. Actually, the ports are owned by a QP0ZSPWT job (that is itself probably owned by the Catalina job.) Once I know how to get a thread dump on an AS/400 (the link didn't cover that; I've got a question out to the Java-400 list at Midrange.com about that) Maybe use DMPJVM? Sorry for the through-Google link [PDF]: http://www.google.com/url?sa=trct=jq=esrc=ssource=webcd=9ved=0CFsQFjAIurl=http%3A%2F%2Fpublib.boulder.ibm.com%2Fhtml%2Fas400%2Fv4r5%2Fic2924%2Finfo%2Fjava%2Frzaha%2Frzaha.pdfei=RQ-1UI-4OdO-0QGJtICADAusg=AFQjCNE2Ai3Hltz7kngTIjlv7t3OjmF3Zgcad=rja - -chris -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with undefined - http://www.enigmail.net/ iEYEARECAAYFAlC1EAkACgkQ9CaO5/Lv0PD23gCgp78aBQBPaXX8NuHhAqDHnyBq 1IcAnRxXIFHDm0goWOZCutw4z2BoNEqP =XYDi -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Shutdown.sh doesn't. At least not reliably. (7.0.25)
Christopher Schultz wrote: Maybe use DMPJVM? Sorry for the through-Google link [PDF]: THANKS! Never heard of such a thing until you brought it to my attention, and it's enough of an eye-opener that I would have gladly forgiven even a through-LMGTFY link. DMPJVM looks like it may be just the thing. I don't want to risk unnecessarily disrupting anybody right now, but later this afternoon, I'm going to run some test shutdowns. Among the responses I got on java40...@midrange.com, one fellow user remarked that he'd been seeing the same phenomenon, and another had this comment: Tomcat won't shut down while there are non-daemon threads running. Still another turned me on to WRKJVMJOB (yet another command I'd never heard of). Applying option 11 of that (Display Threads) to the QP0ZSPWT job (the only active QP0ZSPWT in the system, evidently slaved to the CATALINA job), I get: Thread Name Status 515Fmain TIMW 5162JIT Compilatio THDW 5164JVMTI event re THDW 5165Signal Dispatc THDW 5167Gc Slave Thread THDW 5168i5/OS informat JVAW 516AMemoryPoolMXBe THDW 516BAttach API wai SEMW 516CGC Daemon THDW 516DFinalizer thread THDW 5172ContainerBackg THDW 5173http-bio-8080- TIMW 5174http-bio-8080- THDW 5175http-bio-443-A TIMW 5176http-bio-443-A THDW 5177ajp-bio-8009-A TIMW 5178ajp-bio-8009-A THDW 51BBhttp-bio-443-e THDW 51BChttp-bio-443-e THDW 51BDhttp-bio-443-e THDW 51BEhttp-bio-443-e THDW 51BFhttp-bio-8080- THDW 51C0http-bio-8080- THDW 51C1http-bio-8080- THDW 51C4http-bio-443-e THDW 51DDhttp-bio-443-e THDW 51DEhttp-bio-443-e THDW 51DFhttp-bio-443-e THDW 51E0http-bio-443-e THDW 51E1http-bio-443-e THDW 51E8Java2D Disposer THDW 51F6http-bio-8080- THDW 51F7http-bio-8080- THDW 51F8http-bio-8080- THDW 51F9http-bio-8080- THDW 51FAhttp-bio-8080- THDW 51FChttp-bio-8080- THDW 520Bhttp-bio-8080- THDW (funny, a few seconds ago, it didn't have nearly that many threads; evidently it is indeed currently in use). I note that option 12 appears to be plumbed into DMPJVM. -- JHHL - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Shutdown.sh doesn't. At least not reliably. (7.0.25)
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 James, On 11/27/12 3:56 PM, James Lampert wrote: Christopher Schultz wrote: Maybe use DMPJVM? Sorry for the through-Google link [PDF]: THANKS! Never heard of such a thing until you brought it to my attention, and it's enough of an eye-opener that I would have gladly forgiven even a through-LMGTFY link. DMPJVM looks like it may be just the thing. I don't want to risk unnecessarily disrupting anybody right now, but later this afternoon, I'm going to run some test shutdowns. If you get it figured out, please amend the wiki to include instructions for AS/400. I don't have an AS/400 system handy, so I can't do it myself. I'd probably go mad in the process, anyway ;) I found some instructions for iSeries on the SAP website (http://www.stechno.net/sap-notes.html?view=sapnoteid=710154) but I wasn't going to copy-and-paste that or even link to it unless it actually made some kind of sense. Among the responses I got on java40...@midrange.com, one fellow user remarked that he'd been seeing the same phenomenon, and another had this comment: Tomcat won't shut down while there are non-daemon threads running. Still another turned me on to WRKJVMJOB (yet another command I'd never heard of). Applying option 11 of that (Display Threads) to the QP0ZSPWT job (the only active QP0ZSPWT in the system, evidently slaved to the CATALINA job), I get: Thread Name Status 515Fmain TIMW 5162JIT Compilatio THDW 5164JVMTI event re THDW 5165 Signal Dispatc THDW 5167Gc Slave Thread THDW 5168 i5/OS informat JVAW 516AMemoryPoolMXBe THDW 516B Attach API wai SEMW 516CGC Daemon THDW 516D Finalizer thread THDW 5172ContainerBackg THDW 5173 http-bio-8080- TIMW 5174http-bio-8080- THDW 5175 http-bio-443-A TIMW 5176http-bio-443-A THDW 5177 ajp-bio-8009-A TIMW 5178ajp-bio-8009-A THDW 51BB http-bio-443-e THDW 51BChttp-bio-443-e THDW 51BD http-bio-443-e THDW 51BEhttp-bio-443-e THDW 51BF http-bio-8080- THDW 51C0http-bio-8080- THDW 51C1 http-bio-8080- THDW 51C4http-bio-443-e THDW 51DD http-bio-443-e THDW 51DEhttp-bio-443-e THDW 51DF http-bio-443-e THDW 51E0http-bio-443-e THDW 51E1 http-bio-443-e THDW 51E8Java2D Disposer THDW 51F6 http-bio-8080- THDW 51F7http-bio-8080- THDW 51F8 http-bio-8080- THDW 51F9http-bio-8080- THDW 51FA http-bio-8080- THDW 51FChttp-bio-8080- THDW 520B http-bio-8080- THDW (funny, a few seconds ago, it didn't have nearly that many threads; evidently it is indeed currently in use). I note that option 12 appears to be plumbed into DMPJVM. That certainly looks like a thread list at least. Now you just need to try to get the stack trace of each of those threads. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with undefined - http://www.enigmail.net/ iEYEARECAAYFAlC1RPQACgkQ9CaO5/Lv0PDZ8QCgkpIOtziAQN6EmyIP0st/uJmx 5C8AmwZyyt+UlH8/+93MddR5VJqO26Dr =VXVF -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
