NAME
collectl – Collects data that describes the current system status.
简单翻译成中文就是：收集当前系统状态数据并予以显示
Collectl是一个系统指标收集工具。可以守护进程方式和交互方式运行。支持从一系列的子系统中收集数据。包含一个Graphite接口，使得数据可以轻易地传递给Graphite进行存储。
下面是官方的介绍：
There are a number of times in which you find yourself needing performance data. These can include benchmarking, monitoring a system's general heath or trying to determine what your system was doing at some time in the past. Sometimes you just want to know what the system is doing right now. Depending on what you're doing, you often end up using different tools, each designed to for that specific situation. Unlike most monitoring tools that either focus on a small set of statistics, format their output in only one way, run either interatively or as a daemon but not both, collectl tries to do it all. You can choose to monitor any of a broad set of subsystems which currently include buddyinfo, cpu, disk, inodes, infiniband, lustre, memory, network, nfs, processes, quadrics, slabs, sockets and tcp.
下载:
安装就不啰嗦了,非常简单！rpn包或源码安装！
使用使用介绍
collectl有三种运行模式：
1. Interactive Mode(交互模式): This is the default and in this mode data is read from /proc and passes through analyze.
2. Record Mode(记录模式)：read data from live system and write to file or display on terminal
使用语法：collectl [-f file] [options]
3. Playback Mode(回放模式)：read data from one or more raw data files and display on terminal
使用语法：collectl -p file1 [file2 …] [options]
众多监控工具中、collectl支持的性能数据种类应该是最全的一个，网站空间，监控的子系统项类型：
SUMMARY SUBSYSTEMS –摘要子系统：显示的比较简单.
b – buddy info (memory fragmentation)
c – CPU
d – Disk
f – NFS V3 Data
i – Inode and File System
j – Interrupts
l – Lustre
m – Memory
n – Networks
s – Sockets
t – TCP
x – Interconnect
y – Slabs (system object caches)
DETAIL SUBSYSTEMS –细节子系统：显示比较详细的信息.
C – CPU
D – Disk
E – Environmental data (fan, power, temp), via ipmitool
F – NFS Data
J – Interrupts
L – Lustre OST detail OR client Filesystem detail
M – Memory node data, which is also known as numa data
N – Networks
T – 65 TCP counters only available in plot format
X – Interconnect
Y – Slabs (system object caches)
Z – Processes
上面这些监控项目必须要以 -s 参数来指定,如：collectl -ss ，并且是运行在回放模式下.
常用的参数及说明：
collect 默认不带参数的情况下显示如下：
[root@twexdb1 qzhijun]# collectl
waiting for 1 second sample…
#<—-CPU[HYPER]—–><———-Disks———–><———-Network———->
#cpu sys inter ctxsw KBRead Reads KBWrit Writes KBIn PktIn KBOut PktOut
0 0 1032 439 0 0 0 0 2 23 6 21
天下无难事，只怕有心人。
