[gem5-users] Re: Counters for # DRAM reads, writes, page hits, and page misses

[Eliot Moss via gem5-users]

On 9/8/2023 2:55 AM, Aritra Bagchi via gem5-users wrote:

Hi all,

Can anyone indicate how to extract performance counters such as the number of DRAM read operations, the number of DRAM write operations, the number of times a page miss occurs, etc.?

Inside src/mem/mem_ctrl.cc, MemCtrl::recvTimingReq( ) method, there are two methods for inserting new read and write operations into their respective queues, namely addToReadQueue( ) and addToWriteQueue( ). Can the #reads and #writes can be obtained from here? And what about # page hits/misses? Any help is appreciated.

The way things generally work in gem5 is that you get a stats dump at
the end of a run.  There are also ways to request such dumps more frequently.
You get a lot of details about accesses to caches and memories.  Are you
looking at stats dumps and not seeing what you hope for?

Best - Eliot Moss
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