Spooling Problem

[Midrange]

Hi ther just new to AIX. We have a problem on our spooling process, it takes 13 hours to finish the job as part of the End of Month Process. Our whole EOM takes takes 18 hours, 13 hours for spooling alone. According to the application provider 13 hours is very long time for spooling alone.

Can i have your recommendations what to check and i need to setup.. All of my filesystems is under 60% except for the /usr which is 90%.

thanks,
EM

 

[johny2K]

is it possible for you to check spooled files while it's ongoing and maybe you can try to increase FS size based from the time it hits peak (processing of spool file)?

just a thought... i've done same thing before... i just increase the FS size... works for me.

 

[Midrange]

Thanks Johny2K, actually I've already done that. But same problem. anything do i need to setup? FYI, my nachine is a pSeries 2 -way proc, 1Gb of memory and AIX 5.1

 

[DSMARWAY]

hi ,

i'm a bit unclear on what you mean by spooled files , do you mean at EOM from your application you run a job which creates a large file ? what application are you running ?
How is the application creating the spooled file ?

If that is the case , you need to establish how the application is creating the spooled file , from there you can determine what steps to take .

If the application provider is saying 13 hours is too long , what suggestions have they got to make , and how long do they say it should take to run ?

HTH

 

[jwtesch]

Can you say what you mean by 'spooling the job'.
My first interpretation is spooling to a printer. If this is the case, the temporary file goes into /var/spool/qdaemon so look in there to see the size of the file.

Are you even using the queueing subsystem, or do you simply mean that the application is spawning some job. In that case you need to investigate the particular application.

If it is a print job, then it is important to understand the kind of printer language that is used, the kind of printer, and the way the printer is attached.

With the number of questions you have, it sounds like your vendor is your best source of information.

 

[bi]

Midrange, how many disks do you have on your system and what else is on the disk that is receiving the spooled file? Have you run top or topas when the file is being spooled to see if the bottleneck is with the disk IO? That's what it sounds like to me.

 

[Midrange]

thank you for all of your response.
I've run topas and noticed that the disks hdisk 0 and hdisk 1 (raid array 3disks) is reaching 100 %.

 

[bi]

Are you saying it's RAID3? The parity write for the RAID will have an effect on performance.

More disks and a striped LV would be better.