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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
Old 07-22-2005
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
This User Gave Thanks to philip_38 For This Post:
 
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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)

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