 | | | increased I/O tps | increased I/O tps 2004-03-01 - By Stephen Smoogen
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On Mon, 2004-03-01 at 15:46, Christopher McCrory wrote:
> Hello...
>
> I 'm wondering if anyone else is seeing this or knows the reason for the
> following.
>
> two identical servers, Intel, SMP, Adaptec, software raid, U160 scsi,
> same workload. One is RH7.3 (all updates) , the other is RHEL3 (all
> updates).
>
What kind of adaptec card?
> according to iostat, the tps is roughly double on RHEL3. BLk_read/write
> is the same. load and cpu usage is roughly double.
>
> It seems as if all the scsi reads/writes are half the size they were
> resulting in twice the transactions. yes? no? maybe? other?
>
> I 've tried reverting to 2.4.21-4.0.2.ELsmp, elvtune, disabling HT, and
> mem=4096M (down from 6G), all to no avail. ? ? ?
>
> Or should I open a support ticket?
What exactly is the problem :)? Reference numbers to compare to might be
helpful... but if you have support, by all means open a ticket. The main
thing is to be able to ask the question in a way that cuts down the
support time :).
--
Stephen John Smoogen smoogen@(protected)
Los Alamos National Lab CCN-5 Sched 5/40 PH: 4-0645
Ta-03 SM-1498 MailStop B255 DP 10S Los Alamos, NM 87545
-- So shines a good deed in a weary world. = Willy Wonka --
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