Trying to find out the path uops are delivered to IDQ (Sandy Bridge-E)

ycakm — Fri, 04 Dec 2015 04:42:04 GMT

Hi,

I am currently experimenting with some small asm sequences and investigating the performance event counters. I have a small loop consisting of a (add,add,mov,sub,jnb) sequence, being repeated x number of times.

My initial guess was that I would be able to see the number of uops sent to the instruction dispatch queue (IDQ), could be observed by looking at the decoded icache (IDQ:DSB_UOPS) event. However, the results were not as I expected:

IDQ:DSB_UOPS 15252

IDQ:MITE_UOPS 4692

UOPS_RETIRED 4000024538

PAPI_TOT_CYC 1000237807

Can anyone please point out where these uops are sent to the backend from, and which event I should check to observe that?

Thanks,

Yaman

Re: Trying to find out the path uops are delivered to IDQ (Sandy Bridge-E)

Anonymous — Mon, 07 Dec 2015 16:38:27 GMT

Hi yamancak,

In regards your question, it is better to post at Intel® Developer Zone, they are in charge of the software and processor firmware.

https://software.intel.com/en-us/ Intel® Developer Zone

Regards,

Mike C

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Trying to find out the path uops are delivered to IDQ (Sandy Bridge-E)

Re: Trying to find out the path uops are delivered to IDQ (Sandy Bridge-E)