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Regarding offcore requests

Jia_Rao
Beginner
‎04-02-2012 09:39 AM
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Hi all,

Will the offcore requests that are blocked due to superqueue full be discarded ? Then the front-end will issue them later when the superqueue is available ?

I found the following two events interesting:
OFFCORE_REQUESTS.ANY
OFFCORE_REQUESTS_SQ_FULL

My question is:
Does OFFCORE_REQUESTS.ANY also count the requests that are blocked ? (i.e. OFFCORE_REQUESTS.ANY is a super set of OFFCORE_REQUESTS_SQ_FULL), or OFFCORE_REQUESTS only counts admitted requests by the superqueue?

Thanks.
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Peter_W_Intel
Employee
‎04-04-2012 07:57 PM
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OFFCORE_REQUESTS.ANY? I only found OFFCORE_RESPONSE_0 which can measure all cache line activities, but OFFCORE_REQUESTS_SQ_FULL only measures the latency (cycles) when SQ is full.
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