add meta

Makefile

@@ -7,5 +7,6 @@ benchmarks_test.go: make_benchmarks.py packages.yaml
 results/%.out: benchmarks_test.go
 	go test -bench $* | grep Benchmark | tee | sort -k3,3n > $@
 
-README.md: README.md.j2 packages.yaml results/EncodeString.out results/EncodeInt.out results/DecodeString.out
+README.md: README.md.j2 packages.yaml meta.py results/EncodeString.out results/EncodeInt.out results/DecodeString.out
+	python meta.py > results/meta.out
 	j2 --format=yaml $< packages.yaml > $@

README.md

@@ -35,6 +35,17 @@ BenchmarkTomihiltunenDecodeString-4   	 3000000	       602 ns/op
 BenchmarkFanixkDecodeString-4         	 2000000	       736 ns/op
 ```
 
+### Meta
+
+```
+$ date
+Mon Aug 14 23:44:33 PDT 2017
+$ go version
+go version go1.8.1 darwin/amd64
+$ sysctl -n machdep.cpu.brand_string
+Intel(R) Core(TM) i7-6660U CPU @ 2.40GHz
+```
+
 ## Packages Tested
 
 * [mmcloughlin/geohash](https://github.com/mmcloughlin/geohash) ([godoc](https://godoc.org/github.com/mmcloughlin/geohash))

README.md.j2

@@ -21,6 +21,12 @@ Benchmarks to compare golang geohash implementations.
 {% include 'results/DecodeString.out' %}
 ```
 
+### Meta
+
+```
+{% include 'results/meta.out' %}
+```
+
 ## Packages Tested
 {% for package in packages -%}
 {% set name = '/'.join(package['import'].split('/')[1:]) %}

meta.py

@@ -0,0 +1,15 @@
+import subprocess
+import sys
+
+
+COMMANDS = [
+        'date',
+        'go version',
+        'sysctl -n machdep.cpu.brand_string',
+        ]
+
+
+for cmd in COMMANDS:
+    print '$', cmd
+    sys.stdout.flush()
+    subprocess.check_call(cmd, shell=True)

results/meta.out

@@ -0,0 +1,6 @@
+$ date
+Mon Aug 14 23:44:33 PDT 2017
+$ go version
+go version go1.8.1 darwin/amd64
+$ sysctl -n machdep.cpu.brand_string
+Intel(R) Core(TM) i7-6660U CPU @ 2.40GHz