Yet another INDEX builder.

Vasil Dimov vd at
Mon Oct 2 07:53:39 PDT 2006

On Mon, Oct 02, 2006 at 04:21:32PM +0200, Michel Talon wrote:
> Thanks a lot for this very interesting measurement. I note that using
> parallel makes takes 18 minutes at best and 20 minutes at worst, while
> build_index takes 26 minutes. I suppose parallel make runs faster because
> more of the work is spread over several processors. While in my case i launch
> several makes, but there is always just one python process to read them.

This is a single processor machine. Not hyperthreaded nor multicored.
Running UP kernel.

> And now i have a problem, how is it that i spend only two minutes more than
> you (and even one minute less than you if i do the same computation starting
> from 23 minutes) while you have obviously a much more powerful machine than
> me?
> niobe% dmesg
> ...
> FreeBSD 6.1-RELEASE #1: Thu May 11 14:54:37 CEST 2006
> CPU: Intel(R) Pentium(R) 4 CPU 3.06GHz (3073.65-MHz 686-class CPU)

I wouldn't exactly say that a single core Athlon @ 2.2GHz is
"much more powerful" than a HTT Pentium4 @ 3GHz. Disk throughput and
memory capacity are not the bottleneck in this case.

Vasil Dimov
gro.DSBeerF at dv
The Roman Rule
        The one who says it cannot be done should never interrupt the
        one who is doing it.
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