Linux
发布时间:2016-11-29 23:23:18
转自:http://blog.yufeng.info/archives/2581linux下每个文件都会在某个块设备上存放,当然也都有相应的inode, 那么透过vfs.write我们就可以知道谁在不停的写入特定的设备上的inode。幸运的是systemtap的安装包里带了inodewatch.stp,位于/usr/local/share/doc/systemtap/examples/io目录下,就是用来这个用途的。我们.........【阅读全文】
发布时间:2016-11-29 23:12:01
转自:http://prefetch.net/blog/index.php/2011/07/11/using-netstat-and-dropwatch-to-observe-packet-loss-on-linux-servers/Using netstat and dropwatch to observe packet loss on Linux serversAnyone that is running a modern Operating System is most likely utilizing TCP/IP to send and receive data. Mo.........【阅读全文】
发布时间:2016-10-17 19:20:15
会话保持语法:session_sticky [cookie=name] [domain=your_domain] [path=your_path] [maxage=time] [mode=insert|rewrite|prefix] [option=indirect] [maxidle=time] [maxlife=time] [fallback=on|off] [hash=plain|md5]上下文:upstreamcookie设置用来记录会话的cookie名称domain设置cookie.........【阅读全文】
发布时间:2016-08-02 18:49:01
网络测量的工具有很多,netperf什么的都很不错。 我这里推荐了qperf,这是RHEL 6发行版里面自带的,所以使用起来很方便,只要简单的:yum install qperf我们看下man qperf的介绍:qperf measures bandwidth and latency between two nodes. It can work over TCP/IP as well as the RDMA transports. .........【阅读全文】