Changes between Version 4 and Version 5 of jazz/demo.crawlzilla.info

Timestamp:

Apr 4, 2013, 10:34:06 AM (11 years ago)

Author:

jazz

Comment:

--

jazz/demo.crawlzilla.info

@@ -38 +38 @@
  * [參考] [http://stackoverflow.com/questions/13631994/what-is-the-best-practice-for-tomcat-performance-tuning-in-amazon-ubuntu-instanc What is the best practice for tomcat performance tuning in Amazon ubuntu instance?]
 
- * 此外，也發現 Apache2 的 Keep-Alive 時間很長，因此需要對 Apache2 的 mod_proxy 做一些調整
+ * 此外，也發現 Apache2 的 '''Keep-Alive 時間很長'''，因此需要對 Apache2 的 mod_proxy 做一些調整
    * [參考] http://httpd.apache.org/docs/2.2/mod/mod_proxy.html#proxypass
 {{{
@@ -45 +45 @@
   SetEnv proxy-nokeepalive 1
 }}}
+ * 同樣地，我們也降低 Tomcat 自身的 Keep-Alive 時間，縮短 Timeout，讓資源可以快速釋放出來。
+   * [參考] [http://stackoverflow.com/questions/1542502/java-server-cpu-usage-at-100-after-two-days-continous-running-with-about-110-us Java server cpu usage at 100% after two days continous running with about 110 users]
+   * [參考] [http://www.virtualzone.de/2010/11/tomcat-apache-high-cpu-usage.html  Tomcat & Apache: High CPU Usage]
+{{{
+## 編輯 /opt/crawlzilla/tomcat/conf/server.xml 
+    <Connector port="8080" protocol="HTTP/1.1"
+               keepAliveTimeout="2000"
+               connectionTimeout="2000"
+               redirectPort="8443" URIEncoding="UTF-8"
+               compression="on" 
+               compressableMimeType="application/octet-stream,text/html,text/xml,text/plain,application/x-javascript,image/gif,text/css,image/gif,application/vnd.ms-excel,application/pdf"
+               enableLookups="false"
+               useBodyEncodingForURI="true" />
+}}}