[Ksummit-2008-discuss] DTrace

[Greg KH]

On Fri, Jun 27, 2008 at 09:50:18AM -0600, Matthew Wilcox wrote:
> The ability to trace userspace programs is the key one for the postgres
> people.  They get reports saying how long queries took to execute, which
> tables were accessed, how long locks (postgres locks, that is, not
> kernel ones) were held, cache hits, cache misses, etc.  It's _really_
> useful for Postgres developers and admins.  And they only get it on
> Solaris and MacOS, not Linux.

Isn't this what oprofile on userspace programs is for?  Or am I totally
mistaken here?

thanks,

greg k-h