On 12/11/08, Paul Clayton <[EMAIL PROTECTED]> wrote: > Next up is other mechanisms to get FPU info. > > So I go searching the web and find Darryl Gove's web page of > http://blogs.sun.com/d/entry/using_dtrace_to_locate_floating that talks to > using kstat and dtrace to look for 'fpu_unfinished_traps'. So I use both > kstat and dtrace options that Darryl mentions and both options come up with > zero (0) counts!
Take a look at this doc: http://www.sun.com/blueprints/1205/819-5144.pdf > So now I am wondering if there is any pure hardware based FPU transactions > taking place that would NOT show up in the 'fpu_unfinished_traps' counts on a > CMT T1 chip based server? And if so, how do I find out about those operations? You can read the full micro architecture of the T1, specifically "OpenSPARC T1 Micro Architecture Specification", chapter 7: Floating-Point Unit. http://www.opensparc.net/opensparc-t1/index.html Rayson > > So, the question is, lacking cooltst that I can get which is usable on a > T2000, what is the full story on floating point math on a CMT and where/how > can data about it's usage be gotten? > > My thanks for any and all help in this! > > pdc > -- > This message posted from opensolaris.org > _______________________________________________ > dtrace-discuss mailing list > dtrace-discuss@opensolaris.org > _______________________________________________ dtrace-discuss mailing list dtrace-discuss@opensolaris.org
