[NCLUG] July 1, 2003 talk - Linux System Performance

[Joseph DiVerdi]

At 11:31 AM -0600 6/25/2003, jbass at dmsd.com wrote:
>Hi Guys,
>
><snip>
>
>In preparation for the talk I seek a broad range of current system
>data on memory/cache/TLB performance, as well as getting people to
>think about the issues before the talk. Please compile and run the
>memory/cache/TLB benchmark below and return the results to me with
>a description of the system including CPUs, motherboard, chipset,
>memory type and size. You might find it interesting to run the test
>both single user and multiuser from an xterm. Other interesting
>tests are with various I/O active in the background (disk, network,
>etc) and multiple sessions on machines with two or more processors.
>
><snip>

FWIW, here are the results of running mbench on a venerable and very lightly loaded 233MHz K6 machine with 160MB of memory, dual disks (6.4GB and 0.5GB, latter dedicated to swap on the secondary IDE), and running RH8.0. mbench was run remotely through an SSH connection with top running on the console. mbench received 99+% of the CPU states.

Mbench by John. L. Bass, DMS Design copyright 1985-1996
You are free to copy and use this program providing configuration info
and results are shared with the author by email to jbass at dmsd.com

Counts are per clock tick, presumed to be HZ=100
SetSize        Random   Sequential
-------  ------------ ------------ 0%        25%        50%        75%       100%
    1024  678487 100%  465116 100% |          |          |       @  |          * 
    1536  678562 100%  464927  99% |                             @             * 
    2048  678565 100%  464867  99% |          |          |       @  |          * 
    3072  678934 100%  466651 100% |                             @             * 
    4096  678345  99%  464918  99% |          |          |       @  |          * 
    6144  678115  99%  464879  99% |                             @             * 
    8192  677976  99%  464989  99% |          |          |       @  |          * 
   12288  677995  99%  464871  99% |                             @             * 
   16384  678091  99%  465167 100% |          |          |       @  |          * 
   24576  652530  96%  402990  86% |                         @               *   
   32768  652341  96%  412226  88% |          |          |    @     |        * | 
   49152  211701  31%   67884  14% |   @         *                               
   65536  154356  22%   63503  13% |   @     *|          |          |          | 
   98304  116549  17%   67917  14% |   @   *                                     
  131072   96849  14%   62122  13% |   @ *    |          |          |          | 
  196608   87743  12%   62309  13% |   @ *                                       
  262144   80417  11%   57111  12% |   @*     |          |          |          | 
  393216   69807  10%   50763  10% |  @ *                                        
  524288   65793   9%   48623  10% |  @*      |          |          |          | 
  786432   52488   7%   44523   9% |  @                                          
 1048576   46916   6%   42769   9% |  @       |          |          |          | 
 1572864   42153   6%   41046   8% |  @                                          
 2097152   39617   5%   40162   8% |  @       |          |          |          | 
 3145728   36785   5%   39883   8% | *@                                          
 4194304   35201   5%   39724   8% | *@       |          |          |          | 
 6291456   33685   4%   39724   8% | *@                                          
 8388608   31780   4%   39724   8% | *@       |          |          |          | 
12582912   27532   4%   39724   8% | *@                                          
16777216   25642   3%   39724   8% | *@       |          |          |          | 

-- 
Joseph A. DiVerdi, Ph.D., M.B.A.          
http://xtrsystems.com/           970.980.5868 (voice) 
PGP Key ID: 0xD50A9E33