Robert Osfield wrote:
Hi Paul,

On Fri, Dec 5, 2008 at 10:14 PM, Paul Martz <[EMAIL PROTECTED]> wrote:
What is your -j parameter to make?

make -j 8

I haven't played with other settings yet.

I'd like to try the same thing on my
older dual quad core Xeon / 10GB Mac Pro and see how the build time compares
with your newer system. I typically use -j16 (assuming the build will be
disk bound), which results in 100% CPU utilization. It's been a while since
I timed a clean OSG build though -- under 10 minutes comes to mind.

I am almost certainly disk bound as I just have a standard 500Mb
7200rpm disk.  I could go for RAID, but this would just suck more
energy for little useful (to me) difference in performance.

For testing it's probably better that you don't, but RAID0 made a HUGE difference for me for paging/building/etc.. Not to mention DVD->PC installs went so fast that I barely had time to read the install splash screens that go by.

But that's with hardware RAID on the motherboard and not the NV software-based RAID (which I was never able to get working on Linux anyway).

Other than technically doubling my failure probability, I couldn't live without it. I guess it is less "green", though.

Maybe I make up for it with fanless water cooling.
-Paul


When the SSD's come down in price and smooth out their performance
envelopes I'll purchase one.

Another aspect of the the new quad core system consumes only about 60%
of the energy of my old quad system that was slower - the motherboard,
CPU and memory of the new system are all better in the energy
efficiency.   Just need the graphics card manufactures to sort out
their energy consumption issues now.

Robert.
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