Re: [CentOS] I/O size distribution?

@ Charles Polisher yes, seems that avgrq-sz does provide the info I needed, thanks for pointing that out! @ Keith I am not sure if blktrace can monitor which files being written to disk or if it is the best tool for that. But you could check out the inotify-tools (iwatch and related) which go

Re: [CentOS] I/O size distribution?

Thanks for all the suggestions. I had a look at systemtap but I have the feeling that in it's current state it is aimed more at kernel developers rather than average admins like me :-) Still, I'll keep an eye on it also give the fact that there seem to be now new documentation being written

[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