build: remove tools/wrk from the tree

wrk is an optional tool that some of the http benchmarks uses. The removal
doesn't affect any users. Developers are assumed to install it before running
the tests.

This change reduces the tarball by 5%

.gitignore

@@ -71,8 +71,6 @@ deps/zlib/zlib.target.mk
 /*.tar.*
 /SHASUMS*.txt*
 
-/tools/wrk/wrk
-
 # test artifacts
 tools/faketime
 icu_config.gypi

LICENSE

@@ -657,184 +657,3 @@ The externally maintained libraries used by io.js are:
     ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   """
-
-- wrk is located at tools/wrk. wrk's license follows:
-  """
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Makefile

@@ -121,7 +121,7 @@ test-message: test-build
 test-simple: all
 	$(PYTHON) tools/test.py parallel sequential
 
-test-pummel: all wrk
+test-pummel: all
 	$(PYTHON) tools/test.py pummel
 
 test-internet: all
@@ -326,13 +326,12 @@ $(PKGSRC): release-only
 
 pkgsrc: $(PKGSRC)
 
-wrkclean:
-	$(MAKE) -C tools/wrk/ clean
-	rm tools/wrk/wrk
-
-wrk: tools/wrk/wrk
-tools/wrk/wrk:
-	$(MAKE) -C tools/wrk/
+haswrk=$(shell which wrk > /dev/null 2>&1; echo $$?)
+wrk:
+ifneq ($(haswrk), 0)
+	@echo "please install wrk before proceeding"; >&2
+	@exit 1
+endif
 
 bench-net: all
 	@$(NODE) benchmark/common.js net

benchmark/README.md

@@ -5,11 +5,7 @@ io.js APIs.
 
 ## prerequisites
 
-Most of the http benchmarks require `wrk` to be compiled beforehand.
-
-```sh
-make wrk
-```
+Most of the http benchmarks require `wrk` and `ab` being installed.
 
 ## How to run tests
 

benchmark/common.js

@@ -79,14 +79,13 @@ function Benchmark(fn, options) {
 // benchmark an http server.
 Benchmark.prototype.http = function(p, args, cb) {
   var self = this;
-  var wrk = path.resolve(__dirname, '..', 'tools', 'wrk', 'wrk');
   var regexp = /Requests\/sec:[ \t]+([0-9\.]+)/;
   var url = 'http://127.0.0.1:' + exports.PORT + p;
 
   args = args.concat(url);
 
   var out = '';
-  var child = spawn(wrk, args);
+  var child = spawn('wrk', args);
 
   child.stdout.setEncoding('utf8');
 

test/pummel/test-keep-alive.js

@@ -39,11 +39,9 @@ function runAb(opts, callback) {
 
   args.push(url.format({ hostname: '127.0.0.1', port: common.PORT, protocol: 'http'}));
 
-  var comm = path.join(__dirname, '..', '..', 'tools', 'wrk', 'wrk');
-
   //console.log(comm, args.join(' '));
 
-  var child = spawn(comm, args);
+  var child = spawn('wrk', args);
   child.stderr.pipe(process.stderr);
   child.stdout.setEncoding('utf8');