cpyf problem

30 pts.
Tags:
AS/400
CPYF
i5 520
V5R4
Hello, we have the following problem: in August 2007 we bought an i5 520 with V5R4. The i5 should be much faster than the old machine, because the hardware is much bigger than the old hardware. We copied the software from the old machine (V5R2) to the new i5. The programs are all working fine but: if i make a simple cpyf from a file testpf to another file test2pf it lasts 30-40 minutes. on the old machine the cpyf lasts less than 10 minutes. (there are no triggers or other jobs using one ot the files above) any ideas ?
ASKED: February 22, 2008  7:50 AM
UPDATED: April 6, 2010  11:56 PM

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Hi,

How big are the files that you’re copying? Are they journalled?

How many disks did you have in the old machine and how many in the new machine?

It may be that you had lots of smaller disks in the old machine which would spread the load of a large copy operation across the disks – your new machine may only have a couple of (larger) disks which means the machine is unable to spread the load so well. I’ve recently noticed the same thing on a new machine. You should be able to see how many disks you have and how bust they are using the WRKDSKSSTS command.

Regards,

Martin Gilbert.

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  • TomLiotta
    ...we bought an i5 520 with V5R4. The i5 should be much faster than the old machine, because the hardware is much bigger than the old hardware. As Martin said, some info on configuration is needed. A 520 can be "much bigger" than older hardware in a variety of ways (though 'physically' "much bigger" might be unusual.) It might have three 70GB disk drives while the older machine had 20 8GB drives, for example. But if the new 520 is a P5 processor group with the drives set up in a 3-drive RAID set, the 520 will have a tough time getting disk operations completed. V5R4 is bigger and more complex than V5R2. It can need more of a machine just to run equally well. The additional features necessarily bring some additional complexity and size. The older machine might have had years of tuning applied to it. It might have been configured optimally for your workload. The 520 might benefit from some basic configuration tuning. But without knowing what the old and new systems are like, it's almost impossible to give useful advice. Tom
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