[Zope] Re: Intel vs AMD

[THoffman@indtech.wa.gov.au]

Hmmm

Actually I will take some of this back.

It seems even on my single CPU notebook multiple pystones running
concurrently do not exhibit the behaviour I would expect from a CPU 
oriented benchmark. 

Rgds

Tim
On Thu, 2002-12-12 at 17:38, THoffman@indtech.wa.gov.au wrote:
> Gotta add my bit.
> 
> 
> People often give short shrift to Solaris/SPARC running python,
> and pystone isn't a real world test but.
> 
> As you know python perf/pystone seems directly attributable to Mhz
> so on my Dual 750Mhz Sun 280R
> 
> A single pystone is on this box is
> 
> Pystone(1.1) time for 10000 passes = 1.25
> This machine benchmarks at 8000 pystones/second
> 
> Whereas 16 pystones running simultaneously on the same box
> (note increased loop count to 50000 to be sure all jobs are likely to
> impact each other)
> 
> Pystone(1.1) time for 50000 passes = 6.31
> This machine benchmarks at 7923.93 pystones/second
> Pystone(1.1) time for 50000 passes = 6.31
> This machine benchmarks at 7923.93 pystones/second
> Pystone(1.1) time for 50000 passes = 6.33
> This machine benchmarks at 7898.89 pystones/second
> Pystone(1.1) time for 50000 passes = 6.31
> This machine benchmarks at 7923.93 pystones/second
> Pystone(1.1) time for 50000 passes = 6.31
> This machine benchmarks at 7923.93 pystones/second
> Pystone(1.1) time for 50000 passes = 6.31
> This machine benchmarks at 7923.93 pystones/second
> Pystone(1.1) time for 50000 passes = 6.3
> This machine benchmarks at 7936.51 pystones/second
> Pystone(1.1) time for 50000 passes = 6.31
> This machine benchmarks at 7923.93 pystones/second
> Pystone(1.1) time for 50000 passes = 6.31
> This machine benchmarks at 7923.93 pystones/second
> Pystone(1.1) time for 50000 passes = 6.32
> This machine benchmarks at 7911.39 pystones/second
> Pystone(1.1) time for 50000 passes = 6.33
> This machine benchmarks at 7898.89 pystones/second
> Pystone(1.1) time for 50000 passes = 6.33
> This machine benchmarks at 7898.89 pystones/second
> Pystone(1.1) time for 50000 passes = 6.33
> This machine benchmarks at 7898.89 pystones/second
> Pystone(1.1) time for 50000 passes = 6.33
> This machine benchmarks at 7898.89 pystones/second
> Pystone(1.1) time for 50000 passes = 6.33
> This machine benchmarks at 7898.89 pystones/second
> Pystone(1.1) time for 50000 passes = 6.35
> This machine benchmarks at 7874.02 pystones/second
> 
> So what we see is a single instance python is not really running as
> fast as it could possibly, and that the increase in load for each new
> process is not linear. If the tasks where running as fast as the CPU can
> do the job, then 4 pystone jobs should each take twice as long as two.
> 
> So whilst solaris may not be the fastest pystone box for MHz/$ you may
> find you can do far more with it if you run a bunch of Zeo servers ;-)
> 
> If you are running lot's of Zope servers then you need to look at what
> your horizontal scalability will be. (ie how does it handle a load from
> multiple processes.) This test obviously doesn't stress memory.
> 
> See ya
> 
> Tim
> 
> 
> On Wed, 2002-12-11 at 22:55, Roel Van den Bergh wrote:
> > Here are some stats to add :-)
> > 
> > Dell PowerApp 120 Intel Pentium III (Coppermine) Dual 1Ghz, 1GB PC133
ECC
> > SDRAM
> > running in single proccessor mode
> > 
> > [root@root]# python /home/zope/2-5-0/lib/python2.1/test/pystone.py
> > Pystone(1.1) time for 10000 passes = 0.87
> > This machine benchmarks at 11494.3 pystones/second
> > [root@root]# python /home/Python-2.1.3/Lib/test/pystone.py
> > Pystone(1.1) time for 10000 passes = 0.86
> > This machine benchmarks at 11627.9 pystones/second
> > [root@root]# python /usr/lib/python1.5/test/pystone.py
> > Pystone(1.1) time for 10000 passes = 0.85
> > This machine benchmarks at 11764.7 pystones/second
> > [root@root]# python /usr/lib/python2.1/test/pystone.py
> > Pystone(1.1) time for 10000 passes = 0.86
> > This machine benchmarks at 11627.9 pystones/second
> > [root@root]# python /usr/local/lib/python2.1/test/pystone.py
> > Pystone(1.1) time for 10000 passes = 0.87
> > This machine benchmarks at 11494.3 pystones/second
> > [root@root]# python
/usr/src/redhat/BUILD/Python-2.1.3/Lib/test/pystone.py
> > Pystone(1.1) time for 10000 passes = 0.85
> > This machine benchmarks at 11764.7 pystones/second
> > 
> > Roel.
> > 
> > 
> > 
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