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authorJeffrey Wilcke <jeffrey@ethereum.org>2017-05-23 15:34:04 +0800
committerJeffrey Wilcke <jeffrey@ethereum.org>2017-05-23 16:17:55 +0800
commit3ee75bec9fd3a023b9636a9f09cce99dc487bfaa (patch)
tree1a3aa098de6ffd2ad0f4dbebc188741b88adecf3
parent04b668b2325e48774aaa6859213c72598fa818fa (diff)
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cmd/evm: added mem/cpu profiling
-rw-r--r--cmd/evm/main.go15
-rw-r--r--cmd/evm/runner.go29
2 files changed, 44 insertions, 0 deletions
diff --git a/cmd/evm/main.go b/cmd/evm/main.go
index 5f85f484e..e85d31d03 100644
--- a/cmd/evm/main.go
+++ b/cmd/evm/main.go
@@ -35,6 +35,18 @@ var (
Name: "debug",
Usage: "output full trace logs",
}
+ MemProfileFlag = cli.StringFlag{
+ Name: "memprofile",
+ Usage: "creates a memory profile at the given path",
+ }
+ CPUProfileFlag = cli.StringFlag{
+ Name: "cpuprofile",
+ Usage: "creates a CPU profile at the given path",
+ }
+ StatDumpFlag = cli.BoolFlag{
+ Name: "statdump",
+ Usage: "displays stack and heap memory information",
+ }
CodeFlag = cli.StringFlag{
Name: "code",
Usage: "EVM code",
@@ -93,6 +105,9 @@ func init() {
DumpFlag,
InputFlag,
DisableGasMeteringFlag,
+ MemProfileFlag,
+ CPUProfileFlag,
+ StatDumpFlag,
}
app.Commands = []cli.Command{
compileCommand,
diff --git a/cmd/evm/runner.go b/cmd/evm/runner.go
index 6ef9230f4..22538d7b1 100644
--- a/cmd/evm/runner.go
+++ b/cmd/evm/runner.go
@@ -21,6 +21,7 @@ import (
"fmt"
"io/ioutil"
"os"
+ "runtime/pprof"
"time"
goruntime "runtime"
@@ -108,6 +109,19 @@ func runCmd(ctx *cli.Context) error {
},
}
+ if cpuProfilePath := ctx.GlobalString(CPUProfileFlag.Name); cpuProfilePath != "" {
+ f, err := os.Create(cpuProfilePath)
+ if err != nil {
+ fmt.Println("could not create CPU profile: ", err)
+ os.Exit(1)
+ }
+ if err := pprof.StartCPUProfile(f); err != nil {
+ fmt.Println("could not start CPU profile: ", err)
+ os.Exit(1)
+ }
+ defer pprof.StopCPUProfile()
+ }
+
tstart := time.Now()
if ctx.GlobalBool(CreateFlag.Name) {
input := append(code, common.Hex2Bytes(ctx.GlobalString(InputFlag.Name))...)
@@ -125,12 +139,27 @@ func runCmd(ctx *cli.Context) error {
fmt.Println(string(statedb.Dump()))
}
+ if memProfilePath := ctx.GlobalString(MemProfileFlag.Name); memProfilePath != "" {
+ f, err := os.Create(memProfilePath)
+ if err != nil {
+ fmt.Println("could not create memory profile: ", err)
+ os.Exit(1)
+ }
+ if err := pprof.WriteHeapProfile(f); err != nil {
+ fmt.Println("could not write memory profile: ", err)
+ os.Exit(1)
+ }
+ f.Close()
+ }
+
if ctx.GlobalBool(DebugFlag.Name) {
fmt.Fprintln(os.Stderr, "#### TRACE ####")
vm.WriteTrace(os.Stderr, logger.StructLogs())
fmt.Fprintln(os.Stderr, "#### LOGS ####")
vm.WriteLogs(os.Stderr, statedb.Logs())
+ }
+ if ctx.GlobalBool(StatDumpFlag.Name) {
var mem goruntime.MemStats
goruntime.ReadMemStats(&mem)
fmt.Fprintf(os.Stderr, `evm execution time: %v