Linux Benchmarks Makes No Sense Post: 78844

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UNIX Standards and Benchmarks UNIX & LINUX Benchmarks (Version 3.11) Linux Benchmarks Linux Benchmarks Makes No Sense Post 78844 by philip_38 on Friday 22nd of July 2005 10:29:13 AM

07-22-2005

Registered User

Linux Benchmarks Makes No Sense

I created two computers with identical hardware, and run the benchmark programs in both starting at the same exact time.

What makes no sense is that the computer that has the lower average index (121) finished the race a good 30 minutes ahead of the computer wich showed the higher avg index (167). The only difference here were the operating systems, which I am not naming yet because it may have commercial implications, and frankly I need to understand the results before jumping to conclusions. Maybe lower index means better system? That would be absurd.

Anybody has any idea about what is happenning?

TEST BASELINE RESULT INDEX

Arithmetic Test (type = double) 2541.7 1062680.6 418.1
Dhrystone 2 without register variables 22366.3 5043054.8 225.5
Execl Throughput Test 16.5 132.0 8.0
File Copy (30 seconds) 179.0 10549.0 58.9
Pipe-based Context Switching Test 1318.5 2091.5 1.6
Shell scripts (8 concurrent) 4.0 63.3 15.8
=========
SUM of 6 items 727.9
AVERAGE 121.3

TEST BASELINE RESULT INDEX

Arithmetic Test (type = double) 2541.7 1156065.7 454.8
Dhrystone 2 without register variables 22366.3 7300029.6 326.4
Execl Throughput Test 16.5 63.1 3.8
File Copy (30 seconds) 179.0 38201.0 213.4
Pipe-based Context Switching Test 1318.5 3060.1 2.3
Shell scripts (8 concurrent) 4.0 24.0 6.0
=========
SUM of 6 items 1006.8
AVERAGE 167.8

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LEARN ABOUT DEBIAN

chi::benchmarks

CHI::Benchmarks(3pm)					User Contributed Perl Documentation				      CHI::Benchmarks(3pm)

NAME

       CHI::Benchmarks - Benchmarks of CHI and non-CHI drivers

VERSION

       version 0.54

DESCRIPTION

       These benchmarks were created by running

	  etc/bench/bench.pl -d . -t 10 -x

       for CHI 0.42, on OS X v10.6.6, 2.2 GHz Intel Core 2 Duo, Perl 5.12.2.

       For each cache, bench.pl does repeated gets and sets of a data structure for at least 10 seconds and measures the wallclock time per
       operation.

       These numbers should just be used as a rough guideline! Actual results will vary widely depending on system, get/set pattern, actual values
       being set, the proper tuning of memcached/mysql, etc. For best results run the benchmark script (available in this distribution) on your
       own system.

	  Cache 	       Get time Set time Description
	  cache_ref	       0.009ms	0.008ms  Cache::Ref (CART)
	  chi_memory_raw       0.019ms	0.036ms  CHI::Driver::MemoryRaw
	  cache_fastmmap       0.022ms	0.040ms  Cache::FastMmap
	  chi_memory	       0.042ms	0.066ms  CHI::Driver::Memory
	  chi_berkeleydb       0.052ms	0.073ms  CHI::Driver::BerkeleyDB
	  chi_fastmmap	       0.057ms	0.087ms  CHI::Driver::FastMmap
	  cache_cache_memory   0.065ms	0.070ms  Cache::MemoryCache
	  cache_memcached_fast 0.097ms	0.131ms  Cache::Memcached::Fast
	  chi_dbi_sqlite       0.112ms	1.659ms  CHI::Driver::DBI (sqlite)
	  cache_memcached_lib  0.118ms	0.156ms  Cache::Memcached::libmemcached
	  chi_file	       0.118ms	1.138ms  CHI::Driver::File
	  chi_memcached_fast   0.138ms	0.178ms  CHI::Driver::Memcached::Fast
	  chi_memcached_lib    0.151ms	0.202ms  CHI::Driver::Memcached::libmemcached
	  chi_dbi_mysql        0.236ms	0.273ms  CHI::Driver::DBI (mysql)
	  cache_memcached_std  0.238ms	0.180ms  Cache::Memcached
	  chi_memcached_std    0.279ms	0.235ms  CHI::Driver::Memcached
	  cache_cache_file     0.481ms	1.391ms  Cache::FileCache

SEE ALSO

       CHI

AUTHOR

       Jonathan Swartz <swartz@pobox.com>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2011 by Jonathan Swartz.

       This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

perl v5.14.2							    2012-05-30						      CHI::Benchmarks(3pm)