I started using V Tune as I need to collect few of the micro architectural metrics. I profiled using urach-exploration and memory-accesss.
Here is a summary of what I need and what I am having trouble getting.
Metric Present in Current Set? Required Counters
| IPC | Yes | INST_RETIRED.ANY, CPU_CLK_UNHALTED.THREAD |
| CPI | Yes | Same as IPC |
| L1D Hit / Miss / Access | Yes | MEM_LOAD_RETIRED.L1_HIT, MEM_LOAD_RETIRED.L1_MISS |
| L2 Hit (Only Count) | Yes | MEM_LOAD_RETIRED.L2_HIT |
| L3 Hit / Miss / Access | Yes | MEM_LOAD_RETIRED.L3_HIT, MEM_LOAD_RETIRED.L3_MISS |
| Memory Stall Cycles (L1D, L2, L3) | Yes | MEMORY_ACTIVITY.STALLS_L1D_MISS, STALLS_L2_MISS, STALLS_L3_MISS |
| DRAM Hits (Load) | Yes | MEM_LOAD_UOPS_RETIRED.DRAM_HIT |
| Load / Store Instruction Count | Yes | MEM_INST_RETIRED.ALL_LOADS, ALL_STORES |
| DTLB Walk Stats | Yes | DTLB_LOAD_MISSES.*, DTLB_STORE_MISSES.* |
I still missing some counters and I really need that for research. Following is the table of what I require and not able to find
Metric Reason
| L2 Miss / Access | Still no L2_MISS, L2_ACCESS, or inferred coverage |
| L1I Hit / Miss / Stall | No ICACHE.* counters |
| L2 Hit Composition | No breakdown counters or figure percentages |
| | |
Have I missed looking at the specifications and documentations to get these missing metrices. For ICache Metrices, I was only able to found ICACHE_DATA.STALLS, ICACHE_TAG.STALLS which isnt a direct measure of getting the required stats.
I really would appreciate in getting the help on getting these following metrices
@yuzhang3_intel
