travis-ci: minor improvements.

Author: agentzh

.travis.yml

@@ -11,6 +11,8 @@ compiler:
 env:
   global:
     - NGINX_VERSION=1.9.15
+    - JOBS=3
+    - TEST_NGINX_SLEEP=0.006
   matrix:
     - LUA=libluajit-5.1-dev LUA_DEV=libluajit-5.1-dev LUA_INCLUDE_DIR=/usr/include/luajit-2.0 LUA_CMODULE_DIR=/lib LUALIB=-lluajit-5.1
 
@@ -23,12 +25,11 @@ install:
     - git clone https://github.com/openresty/lua-cjson.git
 
 script:
-  - cd lua-cjson && make && sudo make install && cd ..
+  - cd lua-cjson && make -j$JOBS && sudo make install && cd ..
   - tar xzf nginx-${NGINX_VERSION}.tar.gz
   - cd nginx-${NGINX_VERSION}/
   - ./configure --with-debug --with-cc-opt="-DDEBUG_MALLOC" --with-ipv6 --add-module=../lua-nginx-module > build.log 2>&1 || (cat build.log && exit 1)
-  - make -j2 > build.log 2>&1 || (cat build.log && exit 1)
+  - make -j$JOBS > build.log 2>&1 || (cat build.log && exit 1)
   - export PATH=$PATH:`pwd`/objs
   - cd ..
-  - make
-  - prove -lv t
+  - prove -r t