On 2006.08.09 17:53:01 -0500, Brooks Davis wrote:
> [...] Poul-Henning Kamp has a nice (if probably
> somewhat overkill for this case) writeup on doing benchmarking here:
>
> http://lists.freebsd.org/pipermail/freebsd-current/2004-January/019595.html
It should be mentioned that this is in the Dev
On Wed, 09 Aug 2006, Nikolas Britton wrote:
> On 8/9/06, Matthias Andree <[EMAIL PROTECTED]> wrote:
> >
> >1. gzip isn't usually used to compress incompressible data.
> >
> >2. use "time" to figure out how much CPU time it actually burns.
> > 5 GB are somewhat I/O bound, but gcc options don't he
On Wed, Aug 09, 2006 at 05:31:58PM -0500, Nikolas Britton wrote:
> On 8/9/06, Matthias Andree <[EMAIL PROTECTED]> wrote:
> >
> >1. gzip isn't usually used to compress incompressible data.
> >
> >2. use "time" to figure out how much CPU time it actually burns.
> > 5 GB are somewhat I/O bound, but
On 8/9/06, Matthias Andree <[EMAIL PROTECTED]> wrote:
1. gzip isn't usually used to compress incompressible data.
2. use "time" to figure out how much CPU time it actually burns.
5 GB are somewhat I/O bound, but gcc options don't help with that, so
CPU time is better than wallclock time.
Nikolas Britton wrote:
> dd if=/dev/random of=testfile bs=1m count=5000
>
> gzip compiled with -O3:
> # date ; nice -10 ./gzip -c9 testfile > testfile.gz ; date
> Wed Aug 9 08:01:21 CDT 2006
> Wed Aug 9 08:09:06 CDT 2006
> 465 Seconds.
>
> gzip compiled with -O2:
> # date ; nice -10 ./gzip -c9
"Nikolas Britton" <[EMAIL PROTECTED]> writes:
> dd if=/dev/random of=testfile bs=1m count=5000
1. gzip isn't usually used to compress incompressible data.
2. use "time" to figure out how much CPU time it actually burns.
5 GB are somewhat I/O bound, but gcc options don't help with that, so
dd if=/dev/random of=testfile bs=1m count=5000
gzip compiled with -O3:
# date ; nice -10 ./gzip -c9 testfile > testfile.gz ; date
Wed Aug 9 08:01:21 CDT 2006
Wed Aug 9 08:09:06 CDT 2006
465 Seconds.
gzip compiled with -O2:
# date ; nice -10 ./gzip -c9 testfile > testfile.gz ; date
Wed Aug 9 0