* DBT2-MySQL Benchmark. "hugemem" vs "smp" kernels
@ 2004-07-13 0:07 Peter Zaitsev
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From: Peter Zaitsev @ 2004-07-13 0:07 UTC (permalink / raw)
To: linux-kernel; +Cc: alexeyk
Hi,
Some half a year ago I wrote about my experience of performance of
"hugemem" vs "sm" kernels for 2.4.21-9.EL kernel from RH AS 3.0
The results I got previously were
smp hugemem
IO BOUND: 1450TPM 1250TPM
CPU BOUND: 7000TPM 4500TPM
Results are in Transactions per Minute.
This was significant regression and it was some kind of expected.
The results with newer kernel 2.4.21-15.EL are very strange however:
smp hugemem
IO BOUND: 1150TPM 1650TPM
CPU BOUND: 6300TPM 5000TPM
Well I'm pretty happy to see "hugemem" kernel improved a lot, but
what happened with SMP kernel ? Why it is slow now for IO bound case
and why it became slower than 2.4.21-9.EL ?
I'm using 4*Pentium Xeon 2.0Ghz w HT, 4GB RAM, 3WARE RAID10, EXT3
--
Peter Zaitsev, Senior Support Engineer
MySQL AB, www.mysql.com
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