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Home -> Community -> Mailing Lists -> Oracle-L -> RE: CPU upgrade caused application slow down
Zhu,
The condition that will cause response time to get /worse/ is if your CPU upgrade speeds up some number of competing processes, allowing them to compete more vigorously (that is, same number of calls in a smaller time window) for the resource that was already responsible for a lot of your more-important application's response time before the upgrade.
Cary Millsap
Hotsos Enterprises, Ltd.
http://www.hotsos.com
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-----Original Message-----
From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of zhu chao
Sent: Friday, April 30, 2004 10:54 PM
To: oracle-l_at_freelists.org
Subject: Re: CPU upgrade caused application slow down
Hi, Waleed:
That is what I do everytime I reorgnized a table. The table that got
reorgnized was an IOT table with Overflow segment. After table
recreated, I
move overflow segment to make it sorted.
One more thing, the table is not a key table of the applications
running
on this server, thoug the table is pretty big in size.
I guess the difference in response time is from the network
layer.But I
cannot prove it. No improvement in response is ok for CPU upgrade, as
CPU
time is just part of the total response time, but it should not get
longer:(, right?
Thanks
Zhu Chao
> Wondering if you have one major index that gets used most of the time
=
> using range scan.
> If this is true, then reorganizing the table might have damaged a
little =
> bit the clustering factor.
>
> If this is the case, then loading the table sorted on the columns used
=
> by that index should help a lot.
>
> Regards,
>
> Waleed
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