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collectl

markseger

Download collectl-3.6.3.src.tar.gz

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Screenshots

Add msec to see sub-second intervals & look at other data

Add time to default display at expense of 9 more columns

Default behavior is summary format for cpu, disk and network

Detail formats allow one to look at individual instances

Here we see each different types of interrupts by CPU

Verbose mode shows more detail than summary data

Description

Collectl is a light-weight performance monitoring tool capable of reporting interactively as well as logging to disk. It reports statistics on cpu, disk, infiniband, lustre, memory, network, nfs, process, quadrics, slabs and more in easy to read format.

collectl Web Site

Features

Very low overhead, <0.1% in most cases
Standard types of data: CPU, Disk, Memory, Network & Processes
Less standard: Buddyinfo, NFS, Inodes, Interrupts, Slabs, Sockets & TCP
Even collection of the uncommon: Lustre and Infiniband
API for collecting additional data types
Multiple display formats to meet different needs or write your own
Sub-second sampling to nearest msec with no drift
All instances on a cluster will synchronize their collection times
Can run as a daemon, logging to a file for later playback
Socket communications to facilitate integration into other tools
Ability to send data directly to ganglia gmond

User Ratings

93% recommended

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User Reviews

Posted by Amir Gh — 2009-07-23

Extraordinary!