ab - Apache HTTP server benchmarking tool
时间：2006-12-21 来源：yszll
AB(8) ab AB(8)
NAME
ab - Apache HTTP server benchmarking tool
SYNOPSIS
ab [ -A auth-username:password ] [ -c concurrency ] [ -C cookie-
name=value ] [ -d ] [ -e csv-file ] [ -g gnuplot-file ] [ -h ] [ -H
custom-header ] [ -i ] [ -k ] [ -n requests ] [ -p POST-file ] [ -P
proxy-auth-username:password ] [ -q ] [ -s ] [ -S ] [ -t timelimit ] [
-T content-type ] [ -v verbosity] [ -V ] [ -w ] [ -x <ta-
ble>-attributes ] [ -X proxy[:port] ] [ -y <tr>-attributes ] [ -z
<td>-attributes ] [http://]hostname[:port]/path SUMMARY
ab is a tool for benchmarking your Apache Hypertext Transfer Protocol
(HTTP) server. It is designed to give you an impression of how your
current Apache installation performs. This especially shows you how
many requests per second your Apache installation is capable of serv-
ing. OPTIONS
-A auth-username:password
Supply BASIC Authentication credentials to the server. The
username and password are separated by a single : and sent on
the wire base64 encoded. The string is sent regardless of
whether the server needs it (i.e., has sent an 401 authentica-
tion needed). -c concurrency
Number of multiple requests to perform at a time. Default is
one request at a time. -C cookie-name=value
Add a Cookie: line to the request. The argument is typically in
the form of a name=value pair. This field is repeatable. -d Do not display the "percentage served within XX [ms] table".
(legacy support). -e csv-file
Write a Comma separated value (CSV) file which contains for
each percentage (from 1% to 100%) the time (in milliseconds) it
took to serve that percentage of the requests. This is usually
more useful than the 'gnuplot' file; as the results are already
'binned'. -g gnuplot-file
Write all measured values out as a 'gnuplot' or TSV (Tab sepa-
rate values) file. This file can easily be imported into pack-
ages like Gnuplot, IDL, Mathematica, Igor or even Excell. The
labels are on the first line of the file. -h Display usage information. -H custom-header
Append extra headers to the request. The argument is typically
in the form of a valid header line, containing a colon-sepa-
rated field-value pair (i.e., "Accept-Encoding: zip/zop;8bit"). -i Do HEAD requests instead of GET. -k Enable the HTTP KeepAlive feature, i.e., perform multiple
requests within one HTTP session. Default is no KeepAlive. -n requests
Number of requests to perform for the benchmarking session. The
default is to just perform a single request which usually leads
to non-representative benchmarking results. -p POST-file
File containing data to POST. -P proxy-auth-username:password
Supply BASIC Authentication credentials to a proxy en-route.
The username and password are separated by a single : and sent
on the wire base64 encoded. The string is sent regardless of
whether the proxy needs it (i.e., has sent an 407 proxy authen-
tication needed). -q When processing more than 150 requests, ab outputs a progress
count on stderr every 10% or 100 requests or so. The -q flag
will suppress these messages. -s When compiled in (ab -h will show you) use the SSL protected
https rather than the http protocol. This feature is experimen-
tal and very rudimentary. You probably do not want to use it. -S Do not display the median and standard deviation values, nor
display the warning/error messages when the average and median
are more than one or two times the standard deviation apart.
And default to the min/avg/max values. (legacy support). -t timelimit
Maximum number of seconds to spend for benchmarking. This
implies a -n 50000 internally. Use this to benchmark the server
within a fixed total amount of time. Per default there is no
timelimit. -T content-type
Content-type header to use for POST data. -v verbosity
Set verbosity level - 4 and above prints information on head-
ers, 3 and above prints response codes (404, 200, etc.), 2 and
above prints warnings and info. -V Display version number and exit. -w Print out results in HTML tables. Default table is two columns
wide, with a white background. -x <table>-attributes
String to use as attributes for <table>. Attributes are
inserted <table here >. -X proxy[:port]
Use a proxy server for the requests. -y <tr>-attributes
String to use as attributes for <tr>. -z <td>-attributes
String to use as attributes for <td>.
BUGS
There are various statically declared buffers of fixed length. Com-
bined with the lazy parsing of the command line arguments, the
response headers from the server and other external inputs, this might
bite you.
It does not implement HTTP/1.x fully; only accepts some 'expected'
forms of responses. The rather heavy use of strstr(3) shows up top in
profile, which might indicate a performance problem; i.e., you would
measure the ab performance rather than the server's.
Apache HTTP Server 2004-01-06 AB(8) examples: ab -n 1000 -c 100 -k http://yoursite.com/index.php
ab - Apache HTTP server benchmarking tool
SYNOPSIS
ab [ -A auth-username:password ] [ -c concurrency ] [ -C cookie-
name=value ] [ -d ] [ -e csv-file ] [ -g gnuplot-file ] [ -h ] [ -H
custom-header ] [ -i ] [ -k ] [ -n requests ] [ -p POST-file ] [ -P
proxy-auth-username:password ] [ -q ] [ -s ] [ -S ] [ -t timelimit ] [
-T content-type ] [ -v verbosity] [ -V ] [ -w ] [ -x <ta-
ble>-attributes ] [ -X proxy[:port] ] [ -y <tr>-attributes ] [ -z
<td>-attributes ] [http://]hostname[:port]/path SUMMARY
ab is a tool for benchmarking your Apache Hypertext Transfer Protocol
(HTTP) server. It is designed to give you an impression of how your
current Apache installation performs. This especially shows you how
many requests per second your Apache installation is capable of serv-
ing. OPTIONS
-A auth-username:password
Supply BASIC Authentication credentials to the server. The
username and password are separated by a single : and sent on
the wire base64 encoded. The string is sent regardless of
whether the server needs it (i.e., has sent an 401 authentica-
tion needed). -c concurrency
Number of multiple requests to perform at a time. Default is
one request at a time. -C cookie-name=value
Add a Cookie: line to the request. The argument is typically in
the form of a name=value pair. This field is repeatable. -d Do not display the "percentage served within XX [ms] table".
(legacy support). -e csv-file
Write a Comma separated value (CSV) file which contains for
each percentage (from 1% to 100%) the time (in milliseconds) it
took to serve that percentage of the requests. This is usually
more useful than the 'gnuplot' file; as the results are already
'binned'. -g gnuplot-file
Write all measured values out as a 'gnuplot' or TSV (Tab sepa-
rate values) file. This file can easily be imported into pack-
ages like Gnuplot, IDL, Mathematica, Igor or even Excell. The
labels are on the first line of the file. -h Display usage information. -H custom-header
Append extra headers to the request. The argument is typically
in the form of a valid header line, containing a colon-sepa-
rated field-value pair (i.e., "Accept-Encoding: zip/zop;8bit"). -i Do HEAD requests instead of GET. -k Enable the HTTP KeepAlive feature, i.e., perform multiple
requests within one HTTP session. Default is no KeepAlive. -n requests
Number of requests to perform for the benchmarking session. The
default is to just perform a single request which usually leads
to non-representative benchmarking results. -p POST-file
File containing data to POST. -P proxy-auth-username:password
Supply BASIC Authentication credentials to a proxy en-route.
The username and password are separated by a single : and sent
on the wire base64 encoded. The string is sent regardless of
whether the proxy needs it (i.e., has sent an 407 proxy authen-
tication needed). -q When processing more than 150 requests, ab outputs a progress
count on stderr every 10% or 100 requests or so. The -q flag
will suppress these messages. -s When compiled in (ab -h will show you) use the SSL protected
https rather than the http protocol. This feature is experimen-
tal and very rudimentary. You probably do not want to use it. -S Do not display the median and standard deviation values, nor
display the warning/error messages when the average and median
are more than one or two times the standard deviation apart.
And default to the min/avg/max values. (legacy support). -t timelimit
Maximum number of seconds to spend for benchmarking. This
implies a -n 50000 internally. Use this to benchmark the server
within a fixed total amount of time. Per default there is no
timelimit. -T content-type
Content-type header to use for POST data. -v verbosity
Set verbosity level - 4 and above prints information on head-
ers, 3 and above prints response codes (404, 200, etc.), 2 and
above prints warnings and info. -V Display version number and exit. -w Print out results in HTML tables. Default table is two columns
wide, with a white background. -x <table>-attributes
String to use as attributes for <table>. Attributes are
inserted <table here >. -X proxy[:port]
Use a proxy server for the requests. -y <tr>-attributes
String to use as attributes for <tr>. -z <td>-attributes
String to use as attributes for <td>.
BUGS
There are various statically declared buffers of fixed length. Com-
bined with the lazy parsing of the command line arguments, the
response headers from the server and other external inputs, this might
bite you.
It does not implement HTTP/1.x fully; only accepts some 'expected'
forms of responses. The rather heavy use of strstr(3) shows up top in
profile, which might indicate a performance problem; i.e., you would
measure the ab performance rather than the server's.
Apache HTTP Server 2004-01-06 AB(8) examples: ab -n 1000 -c 100 -k http://yoursite.com/index.php
相关阅读 更多 +
