Re: Swap or I/O Improvement in Fedora 8?

On Tue, 26 Feb 2008 00:59:03 +0800, LaBird wrote:

Hi,

(Sorry if this reply post becomes a new topic, I found it missing when I
refresh my news reader.)

General Schvantzkopf wrote:
They both use the same kernel so there shouldn't be any difference in
the swap algorithms. The memory usage might be different, if you are
using less memory with F8 then you would do less swapping. How much
memory do you actually need? You really really don't want to be
swapping, buy more RAM.

I was testing some out-of-core applications which can use 32GB of RAM,
depending on the problem size I provided in the command line argument
(in most cases, the problems were N x N matrix algorithms where N can be
64K, or even more). So I suppose common motherboards for PCs won't be
supporting that much RAM anyway.

I found that Fedora 8 (64-bit version) could run up to 5 times as fast
as Fedora 7 (64-bit version), depending on the application. For the
memory usage, Fedora 8 used around 120MB RAM while Fedora 7 used about
210MB. So in my 2GB RAM PC, I got around 1.9GB under Fedora 8, and 1.8GB
under Fedora 7. Considering I was running a program needing 16GB to 32GB
RAM, does this 100MB make such a big difference?

Best Regards,
LaBird (Benny).
[Email: Remove all underscores to get the correct address.]

When you do a free how much of your swap space is used with F7 and F8?

.

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