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Full Discussion: AIX performance issue
Operating Systems AIX AIX performance issue Post 302460879 by zxmaus on Thursday 7th of October 2010 10:26:11 PM
Old 10-07-2010
a single threaded process will be by nature slower on a slower cpu - and as you mentioned above - 4.2 GHz is faster than 3.3 GHz - so it will be obviously slower on the new box ? In addition if your vio servers have not enough network resources to support the traffic of all the lpars attached to them, you will loose more time compared to the 520 with fibre and as I assume physical network adapters?
In addition your queue depth on the virtualized SAN might be very low - I assume as low as 3 - compared to the clariion where the queue depth is usually 32.

If your tuning is proper or not is something we cannot say as long as we do not get any data from your box but I would guess that you have the default settings from 5.3 on the new system which are horrible.

If you like, show us the outputs of vmo -a, ioo -a, vmstat -Iwt 2 10 and similar output and we maybe able to tell you what you might want to change.

On top of that by default 32bit applications have only a very limited shared memory area which you can open up for your application to become dynamic but that most likely had not been done either.

Hope that helps
regards
zxmaus

Regards
zxmaus
 

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qmove(1B)								PBS								 qmove(1B)

NAME
qmove - move pbs batch job SYNOPSIS
qmove destination job_identifier ... DESCRIPTION
To move a job is to remove the job from the queue in which it resides and instantiate the job in another queue. The qmove command issues a Move Job batch request to the batch server that currently owns each job specified by job_identifier. A job in the Running , Transiting , or Exiting state cannot be moved. OPERANDS
The first operand is the new destinationfor queue @server queue@server See the PBS ERS section , "Destination Identifiers". If the destination operand describes only a queue, then qmove will move jobs into the queue of the specified name at the job's current server. If the destination operand describes only a batch server, then qmove will move jobs into the default queue at that batch server. If the destination operand describes both a queue and a batch server, then qmove will move the jobs into the specified queue at the speci- fied server. All following operands are job_identifiers which specify the jobs to be moved to the new destination. The qmove command accepts one or more job_identifier operands of the form: sequence_number[.server_name][@server] STANDARD ERROR
The qmove command will write a diagnostic messages to standard error for each error occurrence. EXIT STATUS
Upon successful processing of all the operands presented to the qmove command, the exit status will be a value of zero. If the qmove command fails to process any operand, the command exits with a value greater than zero. SEE ALSO
qsub(1B), pbs_movejob(3B) Local qmove(1B)
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