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performance_compare: support passing --vcrepo and --hyperfine_options 

* support passing --vcrepo and --hyperfine_options. Streamline output.

* Compare the performance of compiling a simple hello world program too.

* Remove redundant vprod comparisons. Instead use v .
pull/2293/head
Delyan Angelov 2019-10-10 20:10:41 +03:00 committed by Alexander Medvednikov
parent f86a52aae6
commit 4f4ac45670
1 changed files with 60 additions and 10 deletions
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70
tools/performance_compare.v
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@ -3,7 +3,7 @@ import os
import flag
const (
tool_version = '0.0.3'
tool_version = '0.0.4'
tool_description = '' +
' Compares V executable size and performance,\n' +
' between 2 commits from V\'s local git history.\n' +
@ -13,15 +13,19 @@ const (
struct Context {
cwd string // current working folder
mut:
vc_repo_url string // the url of the vc repository. It can be a local folder path, which is usefull to eliminate network operations...
workdir string // the working folder (typically /tmp), where the tool will write
a string // the full path to the 'after' folder inside workdir
b string // the full path to the 'before' folder inside workdir
vc string // the full path to the vc folder inside workdir. It is used during bootstrapping v from the C source.
commit_before string // the git commit for the 'before' state
commit_after string // the git commit for the 'after' state
warmups int // how many times to execute a command before gathering stats
verbose bool // whether to print even more stuff
hyperfineopts string // use for additional CLI options that will be given to the hyperfine command
}
fn new_context() Context {
return Context{ cwd: os.getwd(), commit_after: 'master' }
return Context{ cwd: os.getwd(), commit_after: 'master', warmups: 4 }
}
////// The stuff in this block may be reusable for other v cli tools? /////////////////
@ -57,16 +61,33 @@ fn (c Context) compare_versions() {
os.chdir( c.workdir )
run('rm -rf "$c.a" "$c.b" "$c.vc" ')
// clone the VC source *just once per comparison*, and reuse it:
run('git clone --quiet https://github.com/vlang/vc \'$c.vc\' ')
run('git clone --quiet \'$c.vc_repo_url\' \'$c.vc\' ')
println('Comparing v compiler performance of commit $c.commit_before (before) vs commit $c.commit_after (after) ...')
c.prepare_v( c.b , c.commit_before )
c.prepare_v( c.a , c.commit_after )
os.chdir( c.workdir )
c.compare_v_performance( 'v -o source.c compiler' )
c.compare_v_performance( 'vprod -o source.c compiler' )
c.compare_v_performance( 'vprod -o binary compiler' )
c.compare_v_performance([
//The first is the baseline, against which all the others will be compared.
//It is the fastest, since hello_world.v has only a single println in it,
'vprod -debug -o source.c examples/hello_world.v',
'vprod -o source.c examples/hello_world.v',
'vprod -debug -o source.c compiler',
'vprod -o source.c compiler',
'vprod -o hello examples/hello_world.v',
'vprod -o binary compiler',
/////////////////////////////////////////////////////////
'v -debug -o source.c examples/hello_world.v',
'v -o source.c examples/hello_world.v',
'v -debug -o source.c compiler',
'v -o source.c compiler',
'v -o hello examples/hello_world.v',
'v -o binary compiler',
])
}
fn show_sizes_of_files(files []string) {
@ -143,11 +164,24 @@ fn (c &Context) prepare_v( cdir string, commit string ) {
}
fn (c Context) compare_v_performance( cmd string ) {
fn (c Context) compare_v_performance( commands []string ) {
println('---------------------------------------------------------------------------------')
println('Compare \'$cmd\'')
comparison_cmd := 'hyperfine --warmup=3 \'cd $c.b ; ./$cmd \' \'cd $c.a ; ./$cmd \' '
println('Compare v performance when doing the following commands:')
mut hyperfine_commands_arguments := []string
for cmd in commands { println(cmd) }
for cmd in commands { hyperfine_commands_arguments << ' \'cd ${c.b:30s} ; ./$cmd \' ' }
for cmd in commands { hyperfine_commands_arguments << ' \'cd ${c.a:30s} ; ./$cmd \' ' }
///////////////////////////////////////////////////////////////////////////////
cmd_stats_file := os.realpath([ c.workdir, 'v_performance_stats.json'].join(os.PathSeparator))
comparison_cmd := 'hyperfine $c.hyperfineopts '+
'--export-json ${cmd_stats_file} '+
'--time-unit millisecond '+
'--style full --warmup $c.warmups ' +
hyperfine_commands_arguments.join(' ')
///////////////////////////////////////////////////////////////////////////////
if c.verbose { println( comparison_cmd ) }
os.system( comparison_cmd )
println('The detailed performance comparison report was saved to: $cmd_stats_file .')
println('')
}
@ -174,7 +208,23 @@ fn main(){
fp.arguments_description('COMMIT_BEFORE [COMMIT_AFTER]')
fp.skip_executable()
fp.limit_free_args(1,2)
show_help:=fp.bool('help', false, 'Show this help screen')
show_help:=fp.bool('help', false, 'Show this help screen\n')
context.vc_repo_url = fp.string('vcrepo', 'https://github.com/vlang/vc',
'' +
'The url of the vc repository. You can clone it \n'+
flag.SPACE+'beforehand, and then just give the local folder \n'+
flag.SPACE+'path here. That will eliminate the network ops \n'+
flag.SPACE+'done by this tool, which is useful, if you want \n'+
flag.SPACE+'to script it/run it in a restrictive vps/docker.\n')
context.verbose = fp.bool('verbose', false, 'Be more verbose\n')
context.hyperfineopts = fp.string('hyperfine_options', '',
'' +
'Additional options passed to hyperfine.\n'+
flag.SPACE+'For example on linux, you may want to pass:\n'+
flag.SPACE+' --hyperfine_options "--prepare \'sync; echo 3 | sudo tee /proc/sys/vm/drop_caches\'" \n')
context.workdir = os.realpath( fp.string('workdir', '/tmp', 'A writable folder, where the comparison will be done.') )
if( show_help ){
println( fp.usage() )