[CentOS] I/O size distribution?
Keith Roberts
keith at karsites.net
Tue Dec 21 22:49:32 UTC 2010
On Tue, 21 Dec 2010, Antonello Piemonte wrote:
> To: centos at centos.org
> From: Antonello Piemonte <apiemont at 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
--
In theory, theory and practice are the same;
in practice they are not.
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