iotop是一个类似top的检测process IO 的Python 项目。可以在这里下载到源码,可以在这里找到具体的说明。下面做一个演示：
首先下载源码,要求python version>=2.6
wget http://guichaz.free.fr/iotop/files/io[......]
February 28, 2013 linux, system No comments linux tools
pidstat是一款很不错的针对linux pid状态监控的程序
The pidstat command is used for monitoring individual tasks currently being managed by the Linux kernel.
It writ[……]
February 27, 2013 linux, system No comments linux tools
本来想写一篇关于nicstat的文章,霸爷已经写的非常好了参考这里nicstat 网络流量统计利器
这里说明一下使用nicstat 可以完美替代iptraf ,nload 等工具
同样可以替代watch –命令行模式:
eg:
Every 1.0s: /sbin/ifconfi[......]
February 27, 2013 linux, system No comments linux tools
Perf is a profiler tool for Linux 2.6+ based systems that abstracts away CPU hardware differences in Linux performance measurementsand presents a simp[……]
June 26, 2012 linux No comments
来自公司SA组的一封邮件
HI All
简单来说Linux kernel低于2.6.18-164且开启NTP服务的server有自动重启的风险
目前我们大多数的server kernel如下
$ uname -a
Linux xen21-vm04 2.6.18-128.1[……]
March 20, 2012 Architect, linux, software No comments
What is virtual server?
Virtual server is a highly scalable and highly available server built on a cluster of real servers. The architecture of serve[……]
January 16, 2012 linux, system 5 comments structure
Regular Pages and HugePages
This section aims to give a general picture about memory access in virtual memory systems and how pages are referenced.[……]