Author image Κώστας Πεντηκούσης

NAME

pt.pl - Process a single TSH trace using Net::Traces::TSH

SYNOPSIS

 perl pt.pl [-v] TRACE

DESCRIPTION

pt.pl is a simple application based on Net::Traces::TSH: It processes TRACE and generates the overall trace summary. Use the -v option to display version and progress information.

Performance Evaluation

Processing large traces can be resource consuming, and you may wonder how pt.pl (essentially, Net::Traces::TSH) fares. I did sample runs and measured the time needed to process TSH traces ranging from 275 KB to 571 MB on four different systems.

System Specifications

Laptop

Mandrake Linux 9.1, Intel Pentium III at 750 MHz, 256 MB RAM, running perl 5.8.0 (i386-linux-thread-multi).

Big Iron

Solaris 2.6, dual Sun Ultra SPARC II at 340 MHz, 3 GB RAM, running perl 5.6.1 (sun4-solaris).

Linux Server

Red Hat Linux 7.3, dual Intel Xeon at 1.8 GHz with Hyper-threading, 4 GB RAM, running perl 5.6.1 (i386-linux).

Sun Fire

Solaris 9, Sun Fire V880 with 8 Ultra Sparc III at 750 MHz (w/8 MB cache each), 32 GB RAM, running perl 5.8.0 (sun4-solaris).

Test Results

The test results below were obtained with the following command

  % time perl pt.pl trace.tsh

All runs were performed on non-dedicated systems during off hours. Each system was under extremely light load. Results are shown here for illustrative purposes only. If you use Net::Traces::TSH, I will be happy to hear about any performance measurements.

The following table shows the median of three sample runs, in elapsed real time, as reported by time, rounded up to the closest second (time on Solaris rounds up elapsed time, anyway) for the systems mentioned above and different TSH trace sizes.

              +-----------------------------------+
              |           Time (min:sec)          |
 +------------+--------+--------+--------+--------+
 | Trace Size | Laptop |  Big   | Linux  |  Sun   |
 | Gziped/Raw |        |  Iron  | Server |  Fire  |
 +------------+--------+--------+--------+--------+
 |  50/275 KB | <0:01  |  0:01  | <0:01  | <0:01  |
 +------------+--------+--------+--------+--------+
 |   1/2.7 MB |  0:07  |  0:17  |  0:04  |  0:07  |
 +------------+--------+--------+--------+--------+
 |   2/6.8 MB |  0:19  |  0:45  |  0:10  |  0:18  |
 +------------+--------+--------+--------+--------+
 |   4/ 13 MB |  0:36  |  1:27  |  0:18  |  0:35  |
 +------------+--------+--------+--------+--------+
 |  10/ 27 MB |  1:25  |  3:00  |  0:38  |  1:14  |
 +------------+--------+--------+--------+--------+
 |  20/ 50 MB |  2:30  |  5:18  |  1:08  |  2:10  |
 +------------+--------+--------+--------+--------+
 |  25/ 67 MB |  3:51  |  7:22  |  1:34  |  3:02  |
 +------------+--------+--------+--------+--------+
 |  50/126 MB |  5.54  | 12:48  |  2:42  |  5:10  |
 +------------+--------+--------+--------+--------+
 | 102/206 MB | 10:45  | 23:05  |  4:54  |  9:22  |
 +------------+--------+--------+--------+--------+
 | 280/571 MB | 30:34  | 64:29  | 13:24  | 26:16  |
 +------------+--------+--------+--------+--------+

DEPENDENCIES

Getopt::Std, Net::Traces::TSH

VERSION

This is pt.pl version 0.03.

AUTHOR

Kostas Pentikousis, kostas@cpan.org

COPYRIGHT AND LICENSE

Copyright 2003-2004 by Kostas Pentikousis. All Rights Reserved.

This program is free software with ABSOLUTELY NO WARRANTY. You can redistribute it and/or modify it under the same terms as Perl itself.