Dear All,
I am a newbie to use Intel forum, thus please suggest if my forum selection is not upto the mark.
My question is pertaining to selection of performance counters to measure system events: cache references and dram accesses at the same time. I am having Intel Pentium D (3.2 Ghz) platform and am using Oprofile system wide profiler to collect these events. I plan to use
BSQ_CACHE_REFERENCE - to measure cache events
IOQ_ALLOCATION - to measure dram related bus transaction.
I tried to use them at the same time, but it fails. My guess is due to the presence of counter number 0 being used to sample both these events. First, please suggest if this conclusion is not correct? If my assumption is right, is there a way to profile both these events at the same time using hardware performance counters.
Thanks!
Ata
Hi Ata,
You said that you want to use two eventsat the same time. I think you used two events in one sampling's activity...am I right? Whatwas error message you got?
There is no conflict when you use "conflict" events in one activity...sampling data collector will run several sessions separately to avoid this.
So don't worry about this. Just add yourevents to thebox of sampling activity.
Please always use latest product (now is v9.1 Update 2), and refer to release notes of the product. Then you canknow supportsoperation systems andprocessors.
(If you use old product, sampling may say"Selected events didn't occur..." since old version doesn't support latest processors)
Regards,Peter