From 092f28c6258d5e56479ffeba6fd6ce056c21ea8c Mon Sep 17 00:00:00 2001
From: Avi Kivity <avi@cloudius-systems.com>
Date: Mon, 17 Jun 2013 13:31:26 +0300
Subject: [PATCH] cli: add stat command
Usage:
perf list (lists all tracepoints)
perf stat tp... (counts tracepoints)
Example:
[/]$ perf stat mutex_lock ctxsw=sched_switch mutex_unlock wake=sched_wake
mutex_lock ctxsw mutex_unlock wake
40 3 1909 2
2075 147 190 82
193 138 193 78
146 139 146 92
317 179 317 78
146 139 146 78
146 139 186 78
205 139 165 78
146 139 146 78
146 139 146 78
146 139 146 80
193 143 193 81
151 147 151 78
146 139 146 78
146 139 146 78
146 139 146 78
159 139 159 78
149 139 149 78
146 139 146 78
164 139 164 78
146 139 176 78
176 139 146 78
149 139 149 78
146 139 146 78
146 139 146 78
mutex_lock ctxsw mutex_unlock wake
146 139 146 79
715 147 715 80
188 139 204 78
---
bootfs.manifest | 1 +
console/cli.js | 2 +
console/perf.js | 104 ++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 107 insertions(+)
create mode 100644 console/perf.js
diff --git a/bootfs.manifest b/bootfs.manifest
index 632420c69..cf2382b0f 100644
--- a/bootfs.manifest
+++ b/bootfs.manifest
@@ -119,4 +119,5 @@
/console/cli.js: ../../console/cli.js
/console/init.js: ../../console/init.js
/console/md5sum.js: ../../console/md5sum.js
+/&/console/perf.js: ../../&
/&/etc/hosts: ../../static/&
diff --git a/console/cli.js b/console/cli.js
index 82d97ec8d..850ea7d94 100644
--- a/console/cli.js
+++ b/console/cli.js
@@ -17,6 +17,7 @@ load("/console/arp.js");
load("/console/md5sum.js");
load("/console/route.js");
load("/console/java.js");
+load("/console/perf.js");
// Commands
var _commands = new Array();
@@ -32,6 +33,7 @@ _commands["arp"] = arp_cmd;
_commands["route"] = route_cmd;
_commands["md5sum"] = md5sum_cmd;
_commands["java"] = java_cmd;
+_commands["perf"] = perf_cmd;
// Create interface to networking functions
var networking_interface = new Networking();
diff --git a/console/perf.js b/console/perf.js
new file mode 100644
index 000000000..3f04addd0
--- /dev/null
+++ b/console/perf.js
@@ -0,0 +1,104 @@
+
+
+var perf_cmd = {
+ invoke: function(args) {
+ args.shift()
+ var cmd = args.shift()
+ if (cmd in this.subcommands) {
+ this.subcommands[cmd].invoke(args)
+ } else {
+ this.help([])
+ }
+ },
+ help: function(args) {
+ write_string('usage:\n\n')
+ for (var k in this.subcommands) {
+ write_string(' perf ' + this.subcommands[k].usage + '\n')
+ }
+ },
+ list: function(args) {
+ write_string('available tracpoints:\n\n')
+ trace = Packages.com.cloudius.trace
+ all = trace.Tracepoint.list()
+ for (var i = 0; i < all.size(); ++i) {
+ var tp = all.get(i)
+ write_string(' ' + String(tp.getName()))
+ write_char('\n')
+ }
+ },
+ stat: function(args) {
+ var pkg = Packages.com.cloudius.trace
+ var counters = []
+ for (var i in args) {
+ var x = args[i]
+ var m = /^(([^=]+)=)?(.+)$/.exec(x)
+ var tag = m[2]
+ var name = m[3]
+ if (!tag) {
+ tag = name
+ }
+ try {
+ var tp = new pkg.Tracepoint(name)
+ var counter = new pkg.Counter(tp)
+ counters.push({
+ tag: tag,
+ counter: counter,
+ width: Math.max(8, tag.length + 2),
+ last: 0,
+ })
+ } catch (err) {
+ write_string('bad tracepoint "' + name + '"\n')
+ return
+ }
+ }
+ var titles = function() {
+ for (var i in counters) {
+ var c = counters[i]
+ for (var j = c.tag.length; j < c.width; ++j) {
+ write_string(' ')
+ }
+ write_string(c.tag)
+ }
+ write_string('\n')
+ }
+ var show = function() {
+ for (var i in counters) {
+ var ctr = counters[i]
+ var last = ctr.last
+ ctr.last = ctr.counter.read()
+ var delta = ctr.last - last
+ delta = delta.toString()
+ for (var j = delta.length; j < ctr.width; ++j) {
+ write_string(' ')
+ }
+ write_string(delta)
+ }
+ write_string('\n')
+ }
+ var line = 0
+ while (true) {
+ if (line++ % 25 == 0) {
+ titles()
+ }
+ show()
+ flush()
+ java.lang.Thread.sleep(1000)
+ }
+ },
+ subcommands: {
+ list: {
+ invoke: function(args) { this.parent.list(args) },
+ usage: 'list',
+ },
+ stat: {
+ invoke: function(args) { this.parent.stat(args) },
+ usage: 'stat [[tag=]tracepoint]...',
+ },
+ },
+ init: function() {
+ for (var k in this.subcommands) {
+ this.subcommands[k].parent = this
+ }
+ },
+}
+
--
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