plotty is a quick hack to do performance comparisions on the command line. It sweeps the x value and runs commands to compute the y value. The y value is extracted from the stdout of the command using a regular expression. The graphs are drawn using gnuplot which you'll need to have installed.
I wanted to compare puma and falcon at different levels of concurrency using wrk. It was possible to do it by hand but hard see the trend. In addition, I wanted a tool with visual output so that I could use it as part of a presentation about concurrency. So, I made this tool to quickly compare and graph the data generated by running commands. Because wrk generates a lot of different statistics, and I was interested in several of them, the tool uses a regular expression to extract the data to be graphed using a regular expression.
wrk -c $x -t $x -d 1 http://localhost:9292 *******
wrk -c $x -t $x -d 1 http://localhost:9293 #######
800 +--------------------------------------------------------------------+
| + + + + + |
700 |-+ ################################ +-|
| #### |
600 |-+ ### +-|
| #### |
| ## |
500 |-+ ## +-|
| ## |
400 |-+ # +-|
| ## |
300 |-+ # +-|
| # |
200 |-+ # +-|
| # |
| ##******************************************************* |
100 |-# +-|
|# + + + + + |
0 +--------------------------------------------------------------------+
0 50 100 150 200 250 300
Add this line to your application's Gemfile:
gem 'plotty'And then execute:
$ bundleOr install it yourself as:
$ gem install plottyplotty allows you to graph data from commands, e.g.
$ plotty -x 1:10 -y '\d+' -- 'echo 1' 'echo $x' 'expr $x \* $x'This will graph the results of executing the 3 commands after the split (--) with $x = 1, 2, 3, ... 10. The y value is computed by the first match of the given regular expression (in this case \d+).
The -x argument can take sequences of the following format:
| Value | Meaning |
|---|---|
1:10 |
Enumerate from 1 to 10. |
1:2:10 |
Enumerate from 1 to 10 with steps of size 2. |
1:*2:64 |
Enumerate from 1 to 64 by multiplying the value by 2 each time. |
The -y argument is a regular expression which is used to extract the y value from the stdout of the command. If a capture is specified, the first one is used.
Add the following to your ~/.gnuplot
set terminal caca driver ncurses
If you are on arch, install gnuplot-caca.
plotty -x 1:1:20 -y '\d+' -e "set terminal dumb; set key outside" -- 'echo 1' 'echo $x'
20 +------------------------------------------------------+
| + + + + + + + + +### | echo 1 *******
18 |-+ ## +-| echo $x #######
| ### |
16 |-+ ### +-|
| ### |
14 |-+ ## +-|
| ### |
12 |-+ ### +-|
| ### |
10 |-+ ## +-|
| ### |
8 |-+ ### +-|
| ### |
6 |-+ ## +-|
| ### |
4 |-+ ### +-|
| ### |
2 |-+ ## +-|
| ##**************************************************|
0 +------------------------------------------------------+
0 2 4 6 8 10 12 14 16 18 20
plotty -x 1:1:100 -y '\d+' -e "set terminal dumb; set key outside" -- 'echo $x' 'expr $x \* $x'
100 +-----------------------------------------------+
| + + + + + + + + #| echo $x *******
90 |-+ ##-| expr $x \* $x #######
| # |
80 |-+ ## +-|
| ## |
70 |-+ ## +-|
| # |
60 |-+ ## +-|
| ## |
50 |-+ # +-|
| ## |
40 |-+ ## +-|
| ## |
30 |-+ ### +-|
| ### |
20 |-+ ## +-|
| #### |
10 |-+ ###### *************|
| #####*************************** + + |
0 +-----------------------------------------------+
1 2 3 4 5 6 7 8 9 10
- Fork it
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create new Pull Request
Released under the MIT license.
Copyright, 2018, by Samuel G. D. Williams.
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