No, up to dozens of jobs often run at the same time. Kees.
> -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Mackenzie, Bruce > Sent: 06 April, 2017 14:59 > To: [email protected] > Subject: Re: Unexplained delays in WLM managed jobclasses > > Silly question, but do you see more than four in this job class at other > times. It may be limited to four. > > > > Bruce MacKenzie | IT Manager | Hardware Services | TD Bank > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Vernooij, Kees (ITOPT1) - KLM > Sent: Thursday, April 06, 2017 8:08 AM > To: [email protected] > Subject: Unexplained delays in WLM managed jobclasses > > Hello, > > We sometimes experience long delays in job initiation, which I cannot > explain. It concerns a WLM managed jobclass, which is filled by Control- > M. Every now and then, we see e.g. 4 jobs running and an accumulating > number of jobs in the input queue, up to more than 100, waiting for one > or more hours. When one job ends, the next job starts, but the number of > executing jobs remains 4. > > I have ruled out all obvious causes, such as a heavy loaded system, jobs > not eligible to run on that system etc. etc. > > From the Redbook "System Programmer's Guide to: Workload Manager" I > found that JES2 is only following WLM, it will start a job when WLM has > started an Initiator ("If there are no free initiators, jobs run > wherever another job finishes, or WLM starts new initiators."). The > $DSRVCLASS,LONG displays the number of initiators WLM has started for > JES2 to use. > > So the number of running job is fully determined by WLM and I am trying > to find out why WLM does not start more initiators. The first period of > the jobs has a Response Goal of 30 seconds. Since this includes a job's > Input Queue time and jobs were waiting for several hours in the input > queue, this only should have been a reason to start extra Initiators. > > I have produced SMF record 99 subtype 6 and it displays a lot of > information about the status of the Service Classes, like MPL-IN-TARGET > and MPL-OUT-TARGET, but I have the feeling that this applies to swapping > IN and OUT of already running tasks and does not say anything about jobs > in the Input Queue. > > My question is: which metrics can tell me more about WLM's decisions to > start Initiators, not start them or stop them? > > Thanks in advance. > Kees. > > ******************************************************** > For information, services and offers, please visit our web site: > http://www.klm.com. This e-mail and any attachment may contain > confidential and privileged material intended for the addressee only. If > you are not the addressee, you are notified that no part of the e-mail > or any attachment may be disclosed, copied or distributed, and that any > other action related to this e-mail or attachment is strictly > prohibited, and may be unlawful. If you have received this e-mail by > error, please notify the sender immediately by return e-mail, and delete > this message. > > Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or > its employees shall not be liable for the incorrect or incomplete > transmission of this e-mail or any attachments, nor responsible for any > delay in receipt. > Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch > Airlines) is registered in Amstelveen, The Netherlands, with registered > number 33014286 > ******************************************************** > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send > email to [email protected] with the message: INFO IBM-MAIN > > If you wish to unsubscribe from receiving commercial electronic messages > from TD Bank Group, please click here or go to the following web > address: www.td.com/tdoptout > Si vous souhaitez vous désabonner des messages électroniques de nature > commerciale envoyés par Groupe Banque TD veuillez cliquer ici ou vous > rendre à l'adresse td.com/tddesab > > NOTICE: Confidential message which may be privileged. Unauthorized > use/disclosure prohibited. If received in error, please go to > www.td.com/legal for instructions. > AVIS : Message confidentiel dont le contenu peut être privilégié. > Utilisation/divulgation interdites sans permission. Si reçu par erreur, > prière d'aller au www.td.com/francais/avis_juridique pour des > instructions. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN ******************************************************** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 ******************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
