xhprof安裝

xhprof簡介

xhprof是facebook開源出來的一個php性能測試工具，也可以稱之爲profile工具。xhprof是一個分層PHP性能分析工具，它報告函數級別的請求次數和各種指標，包括阻塞時間，CPU時間和內存使用情況，與XDebug相比，運行更輕便。

xhprof安裝

1 下載，解壓

wget http://pecl.php.net/get/xhprof-0.9.2.tgz
tar zxvf xhprof-0.9.2.tgz 
cd xhprof-0.9.2

2 編譯生成php擴展庫

phpize
./configure --with-php-config=/usr/local/phproot/bin/php-config
make

/usr/local/phproot就是php的安裝路徑

3 修改php.ini

cp xhprof-0.9.2/extension/modules/xhprof.so /usr/local/phproot/lib/php/extensions/no-debug-non-zts-20060613/
vim /usr/local/phproot/lib/php.ini
[xhprof]
extension=xhprof.so
xhprof.output_dir=/home/usr/logs/xhprof

4 創建output_dir目錄，並設置相應權限

mkdir -p /home/usr/logs/xhprof/
chmod -R 777 /home/usr/logs/xhprof/
chown -R nobody:nobody /home/usr/logs/xhprof/

5 安裝成功

Graphviz安裝

瀏覽callgrapth時，提示

Error: either we can not find profile data for run_id 2011-03-28 17:25:11@917 or the threshold 0.01 is too small or you do not have 'dot' image generation utility installed.

爲了能正常瀏覽生成callgraph，需要安裝Graphviz

1 下載，解壓

wget http://www.graphviz.org/pub/graphviz/stable/SOURCES/graphviz-2.26.3.tar.gz

tar zxvf graphviz-2.26.3.tar.gz

2 編譯

cd graphviz-2.26.3
./configure --with-expat=builtin

加--with-expat=builtin避免出現以下編譯錯誤安裝時報錯，/usr/lib/libexpat.so: could not read symbols: File in wrong format

3

make 
make install

4 安裝成功

[root@leto216 graphviz-2.26.3]# which dot
/usr/local/bin/dot