Re: hyperthreading
- From: Paul Drake <bdbafh@xxxxxxxxx>
- To: thump@xxxxxxxxxxxxxxxx
- Date: Fri, 24 Sep 2004 13:24:22 -0400
sure.
when I'm running something that will have more than 2 threads like
loads, I'll glance at top.
If you read dmesg, you'll see that the runqueues of the logical cpus
are mapped the physical ones. In a dual CPU system, CPUs 0 and 2
(physical) are typically busy and CPUs 1 and 3 are typically idle.
gzipping 4 files in parallel would probably be a good way to compare.
I haven't been ambitious enough to produce any benchmarks on it, as
that box only had a 4 drive RAID 0 volume. After it gets an external
storage unit attached, I'll think about checking out benchmarks - when
IO wait doesn't dominate.
Paul
On Fri, 24 Sep 2004 09:21:59 -0700 (PDT), David <thump@xxxxxxxxxxxxxxxx> wrote:
> Linux RHAS 3.0
> Anyone evaluated CPU hyperthreading for an Oracle 9204 or 9205 db?
> --
> ..
> David
>
> --
> //www.freelists.org/webpage/oracle-l
>
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