Dear All,
I'm running a Tyan Tiger S2460 with two Athlon MP 1700+, using SuSE 7.3
2.4.10 SMP Kernel. In addition i have 2 Adaptec 29160, each serving at the
moment only one Seagate Cheetah disk. Creating with Oracle in parallel
4 datafiles each 1GB i come up with 34 MB/sec.
On my previous Gigabyte i440 BX with SCSI U2W onboard using above Linux
version and disk layout, i came up with 48 MB/sec.
So, where is the problem ?
Attached i have the dmesg command output. The only thing i can see is the
CPU has inconsistent mtrr settings
message. mtrr as a module is activated. Could this be the problem ? During
the run of the above creation of the datafiles, i get the expression only
cpu at a time works, but i do not know how to prove it.
Thanks for any help.
Ciao,
I have found some similar broblems when upgrading from 440BX SMP board to Asus
CUVX-D (Via 694D) SMP Board
Try on Bios settings
Intel MultiProcessor Specification v1.4 -> change it to v1.1
If it doesn't work - try to recompile your kernel
It may be poor md (soft raid) performance under AMD processors
Uwe Teichmann wrote:
> Dear All,
>
> I'm running a Tyan Tiger S2460 with two Athlon MP 1700+, using SuSE 7.3
> 2.4.10 SMP Kernel. In addition i have 2 Adaptec 29160, each serving at the
> moment only one Seagate Cheetah disk. Creating with Oracle in parallel
> 4 datafiles each 1GB i come up with 34 MB/sec.
>
> On my previous Gigabyte i440 BX with SCSI U2W onboard using above Linux
> version and disk layout, i came up with 48 MB/sec.
>
> So, where is the problem ?
>
> Attached i have the dmesg command output. The only thing i can see is the
>
> CPU has inconsistent mtrr settings
>
> message. mtrr as a module is activated. Could this be the problem ? During
> the run of the above creation of the datafiles, i get the expression only
> cpu at a time works, but i do not know how to prove it.
>
> Thanks for any help.
>
> Ciao,
>
> ------------------------------------------------------------------------
> Name: boot.messages
> boot.messages Type: Plain Text (text/plain)
> Encoding: 8bit
> It may be poor md (soft raid) performance under AMD processors
Is this only true for checksumming? (RAID 4/5) If not - what can make AMD
RAID slower?
--
Roy Sigurd Karlsbakk, MCSE, MCNE, CLS, LCA
Computers are like air conditioners.
They stop working when you open Windows.