From: kuhrt@encompasserve.org Sent: Wednesday, January 09, 2002 5:18 PM To: Info-VAX@Mvb.Saic.Com Subject: Re: OpenVMS 7.2 - Slow Queman ???? I've been noticing this problem recently, too. VMS V7.3. When I get to a critical mass of jobs in the queue (and I don't know what the exact number "critical mass" is) all queue related commands will stall for long periods of time. I finally correlated it to when the journal file was being "refilled". The system would decide that it needed to create a new journal file, rename the old one to _old, create a new one, and populate it. While that happened all queue related activity would come to a halt. Depending on the size of the original file it might take 30 to 45 minutes to complete. I moved the queue related files to their own disk with about 20G free, so freespace is no longer an issue. This "disk" is a six disk array used only for queue activity, so performance should not be a problem. I did increase the performance of the "refills" by setting the disk where the journal file resided to nohighwater, but never found the root cause. I now make sure that no more than 5000 jobs are in the queue at one time, which has cut down on the size of the rebuild, but not the frequency. I just checked the three systems this happens on and the journal file is less than five minutes old on all three, so it is still going on. Previous uses of the MC JBC$COMMAND DIAG attempt at a fix didn't make a difference. I've been buzy putting out other (unrelated) fires, so I haven't logged a call yet. In article <3C3ABFAD.5E96DF5C@compaq.com>, Guy Peleg writes: > Have you checked the size of the journal file ? > Large journal files might cause this behavior. Please try the following : > > $MC JBC$COMMAND > JBC$COMMAND> DIAG 7 > JBC$COMMAND> EXIT > > Guy > > Joel Loveless wrote: > >> Do you have some sort of disk defrag utility running. We had this >> problem when the DEC defrager was working on the queue manager master >> file. >> >> On Mon, 7 Jan 2002 07:52:18 -0800 (PST), Fabio Cardoso >> wrote: >> >> >I noticed a strange problem with my queues last >> >friday. It happened a few weeks ago, too. >> > >> >When I tried to display >> > >> >$ SHOW QUE any-queue >> > >> >The command didnt show anything. It freezed.=20 >> >I tried a lot of queues but I had allways the same >> >problem. >> > >> >After a period (about 5-10 minutes since I noticed) >> >, the displays returned ok. >> > >> >I tried >> > >> >$ SHOW ENTRY >> > >> >and had the same symptoms.=20 >> > >> >Do you know anything ? >> > >> > >> >Regards >> > >> >=3D=3D=3D=3D=3D >> >=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= >> >=3D >> >F=E1bio dos Santos Cardoso >> >OpenVMS System Manager >> >Rio de Janeiro - Brazil >> >fabiopenvms@yahoo.com.br >> >=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= >> >=3D >> > >> >__________________________________________________ >> >Do You Yahoo!? >> >Send FREE video emails in Yahoo! Mail! >> >http://promo.yahoo.com/videomail/ >