ci(travis): redo benchmarks with travis

.travis.yml

@@ -19,7 +19,7 @@ install:
 
 script:
   - bash <(curl -s https://raw.githubusercontent.com/ipfs/ci-helpers/master/travis-ci/run-standard-tests.sh)
-
+  - ./bin/run-benchmarks.sh
 
 cache:
   directories:

bin/benchmark-to-file.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+output="$1"
+branch="$2"
+
+git checkout "$2"
+
+IPFS_LOGGING=critical go test -run=NONE -bench=. ./... | tee "$1"

bin/diff-benchmarks.sh

@@ -21,6 +21,7 @@ echo "Result:"
 {
     parse < "$1"
     parse < "$2"
+    echo "DONE"
 } | jq -e -r -s 'group_by(.name)[] | {name: .[0].name, speedup: (.[1].time / .[0].time)} | select(.speedup < 0.90) | "\(.name)\t\(.speedup)x"'
 
 if [[ $? -ne 4 ]]; then

bin/run-benchmarks.sh

@@ -0,0 +1,40 @@
+#!/bin/bash
+set -eo pipefail
+
+display_and_run() {
+    echo "***" "$@"
+	eval $(printf '%q ' "$@")
+}
+
+# reset workdir to state from git (to remove possible rewritten dependencies)
+display_and_run git reset --hard
+
+# Environment
+echo "*** Setting up test environment"
+if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then
+    if [[ "$TRAVIS_SUDO" == true ]]; then
+        # Ensure that IPv6 is enabled.
+        # While this is unsupported by TravisCI, it still works for localhost.
+        sudo sysctl -w net.ipv6.conf.lo.disable_ipv6=0
+        sudo sysctl -w net.ipv6.conf.default.disable_ipv6=0
+        sudo sysctl -w net.ipv6.conf.all.disable_ipv6=0
+    fi
+else
+    # OSX has a default file limit of 256, for some tests we need a
+    # maximum of 8192.
+    ulimit -Sn 8192
+fi
+
+export GO111MODULE=on
+display_and_run go mod download
+git checkout -b after
+git fetch origin master:refs/remotes/origin/before
+git checkout remotes/origin/before
+git checkout -b before
+git checkout after
+display_and_run ./bin/benchmark-to-file.sh benchmark-before.txt before
+git checkout after
+display_and_run ./bin/benchmark-to-file.sh benchmark-after.txt after
+if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then
+display_and_run ./bin/diff-benchmarks.sh benchmark-before.txt benchmark-after.txt
+fi