Performance analysis tool for the apache web server access log with a focus on script response time
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apache-response-time

README.md

apache-response-time

apache-response-time is a performance analysis tool for the apache web server access log file. It's primary focus is on script response time.

Table of contents

Major output sections

The command output can be broken down into 4 sections:

  • Overall
  • Ranked scripts
  • Detailed statistics
  • Frequently requested URLs

Overall - summary statistics for all scripts combined

Ranked scripts - summary statistics for each of the scripts separately

Detailed statistics - detailed statistics and example URLs for each script

Frequently requested URLs - 10 most frequently requested URLs

Statistical measures

The main summary statistics are for apache response time (Time) and the Size of the script output.

  • pct - as a percentage of all scripts
  • total - total script calls, response time or size
  • min - minimum response time or size
  • max - maximum
  • avg - mean
  • 95% - 95th percentile
  • stddev - standard deviation
  • median - median

Secondary statistics are calculated for:

  • R/Call - the response time per call
  • Throughput - bytes per second

Example output

Example of the apache-response-time command output from an apache access log file containing hits to 5 scripts.

$ apache-response-time -s http://supfam.org -d 07/Sep/2009

Overall:
	Calls: 36100	(Unique: 34436)	per sec: 0.42
	Throughput: 67.35k/s

		    total	min	    max	    avg	    stddev
	Time	15033.1	0.11	4.60	0.42	0.71
	Size	988.70M	4.99k	545.68k	28.05k	77.06k
Time range [07/Sep/2009:00:00:01 +0100] to [07/Sep/2009:23:59:53 +0100]


Rank	Calls	Response time	R/Call	Size	Script
====	=====	===============	=======	=======	======
   1	21044	11966.72 79.60%	  0.569	259.23M	gene.cgi
   2	11462	 2123.07 14.12%	  0.185	144.11M	scop.cgi
   3	 1826	  410.30  2.73%	  0.225	15.28M	model.cgi
   4	 1458	  385.37  2.56%	  0.264	476.34M	gen_list.cgi
   5	  310	  147.65  0.98%	  0.476	93.73M	taxonomic_gen_list.cgi


Script 1: gene.cgi	Calls/s: 0.244	Throughput: 22.18k/s
	    pct	    total	min	    max	    avg	    95%	    stddev	median
Calls	58.29	21044
Time	79.60	11966.7	0.12	4.60	0.57	1.91	0.95	0.57
Size	26.22	259.23M	4.99k	100.94k	12.61k	34.96k	9.84k	12.91k
Time range [07/Sep/2009:00:00:02 +0100] to [07/Sep/2009:23:59:51 +0100]

Min time:
http://supfam.org/SUPERFAMILY/cgi-bin/gene.cgi?genome=ns&seqid=(NCU04065.2)
Median time:
http://supfam.org/SUPERFAMILY/cgi-bin/gene.cgi?genome=hs&seqid=ENSP00000371842
95th percentile:
http://supfam.org/SUPERFAMILY/cgi-bin/gene.cgi?genome=05&seqid=gi%7C153952338%7Cref%7CYP_001398471.1%7C
Max time:
http://supfam.org/SUPERFAMILY/cgi-bin/gene.cgi?genome=up&seqid=A1SKF7

Min size:
http://supfam.org/SUPERFAMILY/cgi-bin/gene.cgi?genome=up&seqid=A0MFH8
Median size:
http://supfam.org/SUPERFAMILY/cgi-bin/gene.cgi?genome=ja;seqid=gi%7C89056127%7Cref%7CYP_511578.1%7C
95th percentile:
http://supfam.org/SUPERFAMILY/cgi-bin/gene.cgi?genome=ob&seqid=ENSOGAP00000000621
Max size:
http://supfam.org/SUPERFAMILY/cgi-bin/gene.cgi?genome=mm&seqid=ENSMUSP00000054275

Script 2: scop.cgi	Calls/s: 0.133	Throughput: 69.51k/s
	    pct	    total	min	    max	    avg	    95%	    stddev	median
Calls	31.75	11462
Time	14.12	2123.07	0.12	2.23	0.19	0.44	0.25	0.15
Size	14.58	144.11M	7.34k	179.33k	12.87k	19.59k	5.41k	12.16k
Time range [07/Sep/2009:00:00:01 +0100] to [07/Sep/2009:23:59:53 +0100]

Min time:
http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?sunid=151351
Median time:
http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?sunid=20876
95th percentile:
http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?sunid=27844
Max time:
http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?sunid=153375

Min size:
http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?sunid=47094
Median size:
http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?sunid=139890
95th percentile:
http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?sunid=24136
Max size:
http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?sunid=53931


Script 3: model.cgi	Calls/s: 0.021	Throughput: 38.14k/s
	    pct	    total	min	    max	    avg	    95%	    stddev	median
Calls	5.06	1826
Time	2.73	410.30	0.11	4.10	0.22	0.67	0.30	0.17
Size	1.55	15.28M	7.74k	9.18k	8.57k	8.95k	965.55	8.78k
Time range [07/Sep/2009:00:00:08 +0100] to [07/Sep/2009:23:59:19 +0100]

Min time:
http://supfam.org/SUPERFAMILY/cgi-bin/model.cgi?model=0045128
Median time:
http://supfam.org/SUPERFAMILY/cgi-bin/model.cgi?model=0053405
95th percentile:
http://supfam.org/SUPERFAMILY/cgi-bin/model.cgi?model=0036357
Max time:
http://supfam.org/SUPERFAMILY/cgi-bin/model.cgi?model=0039267

Min size:
http://supfam.org/SUPERFAMILY/cgi-bin/model.cgi?model=0036517
Median size:
http://supfam.org/SUPERFAMILY/cgi-bin/model.cgi?model=0053155
95th percentile:
http://supfam.org/SUPERFAMILY/cgi-bin/model.cgi?model=0045171
Max size:
http://supfam.org/SUPERFAMILY/cgi-bin/model.cgi?model=0037989


Script 4: gen_list.cgi	Calls/s: 0.017	Throughput: 1.24M/s
	    pct	    total	min	    max	    avg	    95%	    stddev	median
Calls	4.04	1458
Time	2.56	385.37	0.14	1.72	0.26	0.59	0.31	0.22
Size	48.18	476.34M	49.61k	545.68k	334.55k	504.07k	92.32k	330.93k
Time range [07/Sep/2009:00:06:09 +0100] to [07/Sep/2009:23:59:49 +0100]

Min time:
http://supfam.org/SUPERFAMILY/cgi-bin/gen_list.cgi?genome=hu
Median time:
http://supfam.org/SUPERFAMILY/cgi-bin/gen_list.cgi?genome=ce
95th percentile:
http://supfam.org/SUPERFAMILY/cgi-bin/gen_list.cgi?genome=67
Max time:
http://supfam.org/SUPERFAMILY/cgi-bin/gen_list.cgi?genome=k4

Min size:
http://supfam.org/SUPERFAMILY/cgi-bin/gen_list.cgi?listtype=fa;genome=5s;sortby=prot
Median size:
http://supfam.org/SUPERFAMILY/cgi-bin/gen_list.cgi?genome=d2
95th percentile:
http://supfam.org/SUPERFAMILY/cgi-bin/gen_list.cgi?genome=of
Max size:
http://supfam.org/SUPERFAMILY/cgi-bin/gen_list.cgi?password=


Script 5: taxonomic_gen_list.cgi	Calls/s: 0.004	Throughput: 650.07k/s
	    pct	    total	min	    max	    avg	    95%	    stddev	median
Calls	0.86	310
Time	0.98	147.65	0.39	1.01	0.48	0.71	0.49	0.45
Size	9.48	93.73M	309.62k	309.62k	309.62k	309.62k	0	309.62k
Time range [07/Sep/2009:00:11:59 +0100] to [07/Sep/2009:23:58:48 +0100]

Min time:
http://supfam.org/SUPERFAMILY/cgi-bin/taxonomic_gen_list.cgi
Median time:
http://supfam.org/SUPERFAMILY/cgi-bin/taxonomic_gen_list.cgi
95th percentile:
http://supfam.org/SUPERFAMILY/cgi-bin/taxonomic_gen_list.cgi
Max time:
http://supfam.org/SUPERFAMILY/cgi-bin/taxonomic_gen_list.cgi

Min size:
http://supfam.org/SUPERFAMILY/cgi-bin/taxonomic_gen_list.cgi
Median size:
http://supfam.org/SUPERFAMILY/cgi-bin/taxonomic_gen_list.cgi
95th percentile:
http://supfam.org/SUPERFAMILY/cgi-bin/taxonomic_gen_list.cgi
Max size:
http://supfam.org/SUPERFAMILY/cgi-bin/taxonomic_gen_list.cgi


Most frequently requested URLs:
 310	http://supfam.org/SUPERFAMILY/cgi-bin/taxonomic_gen_list.cgi
  20	http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?sunid=46458
  12	http://supfam.org/SUPERFAMILY/cgi-bin/gen_list.cgi
  12	http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi
   8	http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?sunid=0
   8	http://supfam.org/SUPERFAMILY/cgi-bin/gen_list.cgi?genome=2k
   7	http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?sunid=46966
   7	http://supfam.org/SUPERFAMILY/cgi-bin/gene.cgi?genome=hs;seqid=ENSP00000222956
   7	http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?sunid=52934
   6	http://supfam.org/SUPERFAMILY/cgi-bin/gen_list.cgi?genome=0q
   6	http://supfam.org/SUPERFAMILY/cgi-bin/gene.cgi?genome=up&seqid=Q0PQ90

Installation and configuration

How to install and configure the apache-response-time command.

System requirements

  • Unix like operating system
  • perl 5.8 or higher
  • working apache web server installation

Installation

In 2 commands:

wget https://raw.githubusercontent.com/makeyourownmaker/apache-response-time/master/apache-response-time
chmod u+x apache-response-time

Testing

Verify the command works:

./apache-response-time -h

Apache configuration

By default the apache log format does not include the response time directive, which apache-response-time depends on.

Edit your apache configuration file to enable the response time directive (%D):

#LogFormat "%h %l %u %t \"%r\" %>s %b"    # Default LogFormat
LogFormat "%h %l %u %t \"%r\" %>s %b %D"  # LogFormat including response time

Restart apache.

Apache LogFormat directive.

Command line options

The command line prompt is indicated by the $ symbol.

List command line options with explanation:

$ apache-response-time -h
apache-response-time is a performance analysis tool for the apache web server.


Usage: ./apache-response-time [options]


Options:
 -a access.log, --access-log=access.log	Apache access log file
					(Default: /var/log/apache2/access.log)

 -d date regex, --date=date regex	Date regex e.g. 06/Jun/2009
					(Default: today)

 -o order,      --order-by=order	Order of results
					One of: time count call_time bytes
					(Default: count)

 -l limit,      --limit=limit		Limit number of ranked scripts
					(Default: 10)

 -s server,     --server=server		Domain name of web server
					(Default: none)

 -b bin_path,   --bin-path=bin_path	Path to script directory
					(Default: cgi-bin)

 -e extension   --extension=extension	Script file extension
					(Default: cgi)

 -h             --help			Help message


Examples:

 apache-response-time -o time -l 5 -s http://acme.com/ -b Rockets -e php

Top 5 php scripts, ordered by time, in the Rockets web application.
Example links will have the form: http://acme.org/Rockets/Drying_paint.php?page=7.


Usage examples

Rank scripts by average response time per call

apache-response-time -o call_time

Show top 25 scripts

apache-response-time -l 25

Performance analysis for 6th June

apache-response-time -d 06/Jun/2009

Python scripts under PeoplesFrontJudea directory on brian.com domain

apache-response-time -e py -b PeoplesFrontJudea -s http://brian.com