On Thu, 13 Apr 2006, Jeff V. Merkey wrote:
Note they ran the benchmark on an Opteron 285 instead of a Xeon with 16 GB of
memory. Opteron peformance currently **SUCKS** with 2.6 series kernels
under any kind of heavy I/O due to their cloning of the ancient 82489DX
architecture for I/O interrupt access and performance. Looks like the test
was stakced against Linux from the start. Should have used a Xeon system.
AMD needs to get their crappy I/O performance up to snuff. Looking at the
test parameteres leads me to believe there was a lot of swapping on a system
with already poor I/O performance.
Jeff, I've seen several reccomendations from databasefolks (postgres and
mysql) favoring Opterons over Xeons. this doesn't match your statement
that Opteron performance sucks under any kind of I/O load. I don't
understand how both can be correct.
David Lang
--
There are two ways of constructing a software design. One way is to make it so simple that there are obviously no deficiencies. And the other way is to make it so complicated that there are no obvious deficiencies.
-- C.A.R. Hoare
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