On Wed, Nov 25, 2009 at 1:43 PM, Sergey Blagodurov <blagodu...@gmail.com> wrote: > Hello, > > I was wondering if it's possible to run smpl_amd64_ibs at the same > time with the pfmon sessions which are tracking hardware counters on > AMD Barcelona. > > The problem here is that smpl_amd64_ibs terminates with the error > "pfm_load_context error errno 16" whenever there is a pfmon session > tracking LLC miss rate on the system. Since IBS events are tracked and > controlled via MSR registers which are directly accessible from user > space and, to the best of my knowledge, work independently from > hardware counter registers, I wonder if this behaviour of pfmon is > indeed necessary. > If you are using pfmon in system-wide mode, you cannot do this.
I don't know where you've seen that IBS registers can be accessed read/write from user space. I don't think that's true. And regardless of that, IBS generates PMU interrupts, so there needs to be some kernel support. ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ perfmon2-devel mailing list perfmon2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/perfmon2-devel
