RE: [U2] Phantom creating Zombies
Hi David Just a thought, but you could change your approach to this and use some newer technologies such as MQ or web services using connection pooling. These are designed to handle issues like you have mentioned better than the phantom process. Regards David Jordan Managing Consultant [EMAIL PROTECTED] Mobile: 0428 669 730 Phone: 61 2 9418 8329 Fax: 61 2 9427 2371 PO Box 909 Lane Cove NSW 2066 Australia www.dacono.com.au CAUTION: This email and any attachments are confidential, may be privileged, and are intended for use solely by the addressee. The confidentiality and/or privilege in this email is not waived, lost or destroyed if it has been transmitted to you in error. If you receive this email in error, please notify Dacono by reply email immediately, delete the email and destroy any printed copies. You must not disclose, disseminate, distribute, reproduce or use the information contained in this email which may contain intellectual property or copyright irrespective whether you are or are not the intended recipient. The content and opinions contained in this email are those of the individual sender and may not necessarily reflect the views and opinions of Dacono. Dacono does not guarantee that this email is free from viruses, errors, interception or interference. Use of this email and any attachments is at the sole risk of the user. Dacono does not accept any liability for any loss or damage to your computer system or network (including any consequential damage) which may occur directly or indirectly from the use of this email. -Original Message- From: [EMAIL PROTECTED] [mailto:owner-u2- [EMAIL PROTECTED] On Behalf Of Norman, David (SAAS) Sent: Monday, 5 November 2007 9:52 AM To: u2-users@listserver.u2ug.org Subject: [U2] Phantom creating Zombies UV 10.0.16 (Information) HP-UX 11i We have a permanently-running phantom, which needs to periodically start another phantom, with both phantoms running independently. When the 2nd phantom stops, that process becomes a zombie until the original phantom stops (which is preferably just about never). As these zombies mount up, we get to the situation where the id associated with the phantom can't run processes or even login until the zombies are cleared (by stopping the first phantom). Our work-around is to stop and restart the first phantom weekly, but we really don't want to have to do this. It's no good just running the BP of the second phantom, because then the first phantom pauses until the second phantom stops. Is there a better way of one phantom launching another without the zombie problem ?? Thanks, David Norman Senior Software Engineer SA Ambulance Service Box 3, GPO Adelaide, South Australia 5001 *+61 8 8274 0384 * fax +61 8 8271 4844 * [EMAIL PROTECTED] --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/ --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
RE: [U2] Phantom creating Zombies
Dear David, Try setting the NOTIFY ON in the login proc. Whats happening is that, when the phantom is done, its needs to tell someone, until thats is done the zombie process will there. Regards, Guna -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Norman, David (SAAS) Sent: Monday, November 05, 2007 6:52 AM To: u2-users@listserver.u2ug.org Subject: [U2] Phantom creating Zombies UV 10.0.16 (Information) HP-UX 11i We have a permanently-running phantom, which needs to periodically start another phantom, with both phantoms running independently. When the 2nd phantom stops, that process becomes a zombie until the original phantom stops (which is preferably just about never). As these zombies mount up, we get to the situation where the id associated with the phantom can't run processes or even login until the zombies are cleared (by stopping the first phantom). Our work-around is to stop and restart the first phantom weekly, but we really don't want to have to do this. It's no good just running the BP of the second phantom, because then the first phantom pauses until the second phantom stops. Is there a better way of one phantom launching another without the zombie problem ?? Thanks, David Norman Senior Software Engineer SA Ambulance Service Box 3, GPO Adelaide, South Australia 5001 *+61 8 8274 0384 * fax +61 8 8271 4844 * [EMAIL PROTECTED] --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/ No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.15.21/1110 - Release Date: 04/11/2007 9:37 PM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.15.21/1110 - Release Date: 04/11/2007 9:37 PM --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
Re: [U2] Phantom creating Zombies
We had the same problem with a scheduling module. We found that if the module CHAINed itself after a given period of time (like an hour) the zombies went south, following the deceased parent. On 11/5/07, Gunasegeran Pasupathy [EMAIL PROTECTED] wrote: Dear David, Try setting the NOTIFY ON in the login proc. Whats happening is that, when the phantom is done, its needs to tell someone, until that s is done the zombie process will there. Regards, Guna -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Norman, David (SAAS) Sent: Monday, November 05, 2007 6:52 AM To: u2-users@listserver.u2ug.org Subject: [U2] Phantom creating Zombies UV 10.0.16 (Information) HP-UX 11i We have a permanently-running phantom, which needs to periodically start another phantom, with both phantoms running independently. When the 2nd phantom stops, that process becomes a zombie until the original phantom stops (which is preferably just about never). As these zombies mount up, we get to the situation where the id associated with the phantom can't run processes or even login until the zombies are cleared (by stopping the first phantom). Our work-around is to stop and restart the first phantom weekly, but we really don't want to have to do this. It's no good just running the BP of the second phantom, because then the first phantom pauses until the second phantom stops. Is there a better way of one phantom launching another without the zombie problem ?? Thanks, David Norman Senior Software Engineer SA Ambulance Service Box 3, GPO Adelaide, South Australia 5001 *+61 8 8274 0384 * fax +61 8 8271 4844 * [EMAIL PROTECTED] --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/ No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.15.21/1110 - Release Date: 04/11/2007 9:37 PM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.15.21/1110 - Release Date: 04/11/2007 9:37 PM --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/ -- john --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
RE: [U2] Phantom creating Zombies
David, Easy fix: EXECUTE JOBS CAPTURING JUNK Put this in your code prior to the PHANTOM launching code. It will reap any dead child processes (zombies), that may be hanging around. Kevin M. Sproule Sr. Technical Consultant AFS Technologies, Inc. 2141 E. Highland Ave, Ste. 100 Phoenix, AZ 85016 Care Center: (602) 522-8181 Main: (602) 522-8282 e-mail: [EMAIL PROTECTED] Our mission is to be the number one supplier of software to the food and beverage industry [demime 1.01d removed an attachment of type image/gif which had a name of image001.gif] --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
RE: [U2] Phantom creating Zombies
David NOTIFY ON and also - as this is a scheduler PHANTOM - change any long SLEEP into smaller chunks of SLEEPS - e.g. Instead of SLEEP 36000 try FOR delay = 1 to 100; SLEEO 360; NEXT delay There were two issues there (from my memory) - the first was that a BREAK on a foreground process that had spawned a PHANTOM would wake the PHANTOM from SLEEP. A side effect of the fix for this was that processes that launched PHANTOMS had to get to a state to receive the signal generated when the PHANTOM terminated (and a SLEEP was not a useful state). Past fixes for PHANTOMs worth note in this context: 10.1.16 === 8072On LINUX and HP platforms, if a PHANTOM was executed from TCL, the performance for subsequent TCL commands incurred a delay of one second before processing while the PHANTOM process was active. This problem has been fixed. 10.1.7 == 7247On LINUX platforms, if a UniVerse process executed the TCL NOTIFY ON command and that process has previously started a nonsocket PHANTOM process that terminated, the parent process did not detect that termination, and the PHANTOM process became a zombie process until the parent process terminated. In addition, on all UNIX platforms, when a UniVerse socket server process excuted the TCL NOTIFY ON command and a PHANTOM process started by the socket server was using the socket connected to the socket server terminated, the server did not detect the termination, and the PHANTOM process became a zombie process until the socket server was terminated. Both of these problems have been fixed. Hope this helps Regards JayJay -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Norman, David (SAAS) Sent: 04 November 2007 22:52 To: u2-users@listserver.u2ug.org Subject: [U2] Phantom creating Zombies UV 10.0.16 (Information) HP-UX 11i We have a permanently-running phantom, which needs to periodically start another phantom, with both phantoms running independently. When the 2nd phantom stops, that process becomes a zombie until the original phantom stops (which is preferably just about never). As these zombies mount up, we get to the situation where the id associated with the phantom can't run processes or even login until the zombies are cleared (by stopping the first phantom). Our work-around is to stop and restart the first phantom weekly, but we really don't want to have to do this. It's no good just running the BP of the second phantom, because then the first phantom pauses until the second phantom stops. Is there a better way of one phantom launching another without the zombie problem ?? Thanks, David Norman Senior Software Engineer SA Ambulance Service Box 3, GPO Adelaide, South Australia 5001 *+61 8 8274 0384 * fax +61 8 8271 4844 * [EMAIL PROTECTED] --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/ --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
