 | | | Performance | Performance 2005-02-28 - By Ender SEVINC
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Hi,
we have such a problem with our server performance.
Let me first introduce our server;we have a HP
Proliant ML370 host machine with double CPU, each of
which is Xeon 3.0 GHz. with 1 MB. L3 cache.
But unfortunately, we cannot get the performance of
parallel processing to the degree we want. Each Xeon
CPU is seen as 2 CPUs, because of being Xeon and HT
technology, and totally 4 CPUs are seen while the
server is running by the OS.
But the point is that those 4 CPUs are running
sequentially, not parallely. As a result, while
running an application esp. needing CPU, on the
server, we cannot use the total CPU power upto 100% or
close. In other words, there is little or zero
performance gradation while running the application on
our server when compared to a normal PC. We use RHL
9.0 and the kernel is 2.4.20-20.9.
I think that the kernel does not let to use system
resources totally. Perhaps another RHL 9.0 kernel
might not only let to use system resources fully but
also runs our applicatiom without a problem. I
remember that with RHL 7.3 version, there was not such
a problem. All CPUs were working parallely with it,
7.3 and we get the full CPU power. But now our CPU
utilization is about 25-30%. We have to use RHL 9.0
from now on, and would be better to run the CPUs
parallelly.
My question is that have you ever encountered such a
problem, and do you have any idea to overcome such a
situation?
Do you have any supposal, if any, i like to hear.
Sincerely.
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