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commands: Make benchmark command more useful

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* Add information about average time, memory consumption and
allocations.
* Fix situation, when user provides memprofile and cpuprofile, but
cpuprofile will not created.

Fixes #2432
This commit is contained in:
Albert Nigmatzianov 2016-11-19 00:06:54 +01:00 committed by Bjørn Erik Pedersen
parent 7b8a09d5f9
commit 29fda0e683
1 changed files with 54 additions and 31 deletions
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85
commands/benchmark.go
View file

@ -15,15 +15,18 @@ package commands
import (
"os"
"runtime"
"runtime/pprof"
"time"
"github.com/spf13/cobra"
jww "github.com/spf13/jwalterweatherman"
)
var (
benchmarkTimes int
cpuProfilefile string
memProfilefile string
cpuProfileFile string
memProfileFile string
)
var benchmarkCmd = &cobra.Command{
@ -37,48 +40,68 @@ func init() {
initHugoBuilderFlags(benchmarkCmd)
initBenchmarkBuildingFlags(benchmarkCmd)
benchmarkCmd.Flags().StringVar(&cpuProfilefile, "cpuprofile", "", "path/filename for the CPU profile file")
benchmarkCmd.Flags().StringVar(&memProfilefile, "memprofile", "", "path/filename for the memory profile file")
benchmarkCmd.Flags().StringVar(&cpuProfileFile, "cpuprofile", "", "path/filename for the CPU profile file")
benchmarkCmd.Flags().StringVar(&memProfileFile, "memprofile", "", "path/filename for the memory profile file")
benchmarkCmd.Flags().IntVarP(&benchmarkTimes, "count", "n", 13, "number of times to build the site")
benchmarkCmd.RunE = benchmark
}
func benchmark(cmd *cobra.Command, args []string) error {
if err := InitializeConfig(benchmarkCmd); err != nil {
var err error
if err = InitializeConfig(benchmarkCmd); err != nil {
return err
}
if memProfilefile != "" {
f, err := os.Create(memProfilefile)
var memProf *os.File
if memProfileFile != "" {
memProf, err = os.Create(memProfileFile)
if err != nil {
return err
}
for i := 0; i < benchmarkTimes; i++ {
_ = resetAndbuildSites(false)
}
pprof.WriteHeapProfile(f)
f.Close()
} else {
if cpuProfilefile == "" {
cpuProfilefile = "/tmp/hugo-cpuprofile"
}
f, err := os.Create(cpuProfilefile)
if err != nil {
return err
}
pprof.StartCPUProfile(f)
defer pprof.StopCPUProfile()
for i := 0; i < benchmarkTimes; i++ {
_ = resetAndbuildSites(false)
}
}
return nil
var cpuProf *os.File
if cpuProfileFile != "" {
cpuProf, err = os.Create(cpuProfileFile)
if err != nil {
return err
}
}
var memStats runtime.MemStats
runtime.ReadMemStats(&memStats)
memAllocated := memStats.TotalAlloc
mallocs := memStats.Mallocs
if cpuProf != nil {
pprof.StartCPUProfile(cpuProf)
}
t := time.Now()
for i := 0; i < benchmarkTimes; i++ {
if err = resetAndbuildSites(false); err != nil {
return err
}
}
totalTime := time.Since(t)
if memProf != nil {
pprof.WriteHeapProfile(memProf)
memProf.Close()
}
if cpuProf != nil {
pprof.StopCPUProfile()
cpuProf.Close()
}
runtime.ReadMemStats(&memStats)
totalMemAllocated := memStats.TotalAlloc - memAllocated
totalMallocs := memStats.Mallocs - mallocs
jww.FEEDBACK.Println()
jww.FEEDBACK.Printf("Average time per operation: %vms\n", int(1000*totalTime.Seconds()/float64(benchmarkTimes)))
jww.FEEDBACK.Printf("Average memory allocated per operation: %vkB\n", totalMemAllocated/uint64(benchmarkTimes)/1024)
jww.FEEDBACK.Printf("Average allocations per operation: %v\n", totalMallocs/uint64(benchmarkTimes))
return nil
}