On Tue, 21 Dec 2010, Antonello Piemonte wrote:
To: centos@centos.org From: Antonello Piemonte apiemont@googlemail.com Subject: [CentOS] I/O size distribution?
Hello
I have read that under Solaris one can use DTrace to get I/O request size distribution on a global scale (also on a per process/pid basis). See for example
http://prefetch.net/articles/observeiodtk.html
Can anyone recommend an alternative to get similar information under CentOS? I looked into dtrace for linux but it seems still work in progress, even putting aside CDDL issues ...
This might do it. It's in the updates repo.
Name : systemtap Arch : i386 Version : 1.1 Release : 3.el5_5.3 Size : 6.3 M Repo : installed Summary : Instrumentation System URL : http://sourceware.org/systemtap/ License : GPLv2+ Description: SystemTap is an instrumentation system for systems running Linux 2.6. : Developers can write instrumentation to collect data on the operation : of the system.
Kind Regards,
Keith Roberts