Re: [Dump-users] slowwwwwww

[Todd a. M. C. <Tod...@ve...>]

Todd and Margo Chester wrote:
> 2.6.18-8.1.8.el5
> 
> Hi All,
> 
> After I wiped my hard drives clean of CentOS 4.4
> (RHEL 4.4 clone) and installed CentOS 5 (RHEL 5),
> I noticed that everything was slower.  Especially,
> dump, which was 3.5 times slower.
> 
> So, I did some tests from my install CD/DVD's in "rescue mode"
> and 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" CentOS4.4 (Kernel 2.6.9-42.EL) install CD in rescue mode:
>          transfer rate 8468 KB/s, estimated finish 2:09
> 
>     "dump" CentOS5 (Kernel 2.6.18) install DVD in rescue mode:
>          transfer rate 4422 KB/s, estimated finish 4:10
> 
>     "dump" System Rescue CD (Kernel 2.6.22.9):
>          transfer rate 4370 KB/s, estimated finish 4:15
> 
> Has anyone else seen this?  If so, were you able to fix it?
> 
> -T


Yippee!  I am not crazy.  Found this bug and a sister bug over in 
kernel.org.

Dump of ext3 runs very slowly:
http://bugzilla.kernel.org/show_bug.cgi?id=8636

Unusable system (ie slow) when copying large files:
http://bugzilla.kernel.org/show_bug.cgi?id=7372

-T