Re: slow after upgrade to CentOS 5 (RHEL5)

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James Bottomley wrote:
Please don't drop the cc lists.  There are others who probably have more
informed opinions than I do who won't get to comment if they don't see
it.

On Sun, 2007-10-28 at 17:36 -0700, Anthony Ewell wrote:
James Bottomley wrote:
On Sat, 2007-10-27 at 13:21 -0700, Anthony Ewell wrote:
James Bottomley wrote:
On Wed, 2007-10-24 at 18:04 -0700, Anthony Ewell wrote:
Hi All,

    If you all would not mind a post from the general
public Linux user, after doing a complete disk wipe
of CentOS 4 and installing CentOS5, my system is preceived
to be 3 times slower.


Did some test from my install CD/DVD's in "rescue mode" on
Computer C.  I used the same backup script (dump) that
I use in normal boot mode.  I stopped the backup
after dump gave the first estimate of time:

   "dump" CentOS5 install DVD in rescue mode:
        transfer rate 4422 KB/s, estimated  finish 4:10

   "dump" CentOS4.4 (2.6.9-42.EL) install CD in rescue mode:
        transfer rate 8468 KB/s, estimated  finish 2:09

I also got a "dmesg" from computer B, as requested by Sumant.
Computer B: VXA-3, CentOS 4.5 , SATA-150-4

-T

Hi All,

I also tested using the System Rescue CD from
        http://www.sysresccd.org.

I used the same backup script (dump) that I use in normal
boot mode. I stopped the backup after dump gave the first
estimate of time:

   "dump" System Rescue CD (Kernel 2.6.22.9):
        transfer rate 4370 KB/s, estimated finish 4:15

So, I would say, the problem is not confined to CentOS 5,
but goes all the way up to the 2.6.22.9 kernel.  I hope
this is a good clue.

-T
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