Hello, everyone Now I am using M5 to simulate 4-core CPU. When I saw the stats.txt reports, here are some questions showing below.
1. For some L2 statistic parameters, there are 5 or 6 different values, for example system.l2.occ_blocks::0 4296.306219 # Average occupied blocks per context system.l2.occ_blocks::1 4219.322094 # Average occupied blocks per context system.l2.occ_blocks::2 4222.702362 # Average occupied blocks per context system.l2.occ_blocks::3 4224.841879 # Average occupied blocks per context system.l2.occ_blocks::4 7387.035504 # Average occupied blocks per context system.l2.occ_percent::0 0.131113 # Average percentage of cache occupancy system.l2.occ_percent::1 0.128763 # Average percentage of cache occupancy system.l2.occ_percent::2 0.128867 # Average percentage of cache occupancy system.l2.occ_percent::3 0.128932 # Average percentage of cache occupancy system.l2.occ_percent::4 0.225434 # Average percentage of cache occupancy Usually, the fifth value is the summary of the first four. However for the "occ_blocks", and "occ_persent", it is not the summary. Does anybody know what the fifth value means? 2. For 6 different values case, for example system.l2.overall_hits::0 32916188 # number of overall hits system.l2.overall_hits::1 32991021 # number of overall hits system.l2.overall_hits::2 30251740 # number of overall hits system.l2.overall_hits::3 32917713 # number of overall hits system.l2.overall_hits::4 0 # number of overall hits system.l2.overall_hits::total 129076662 # number of overall hits Where is "system.l2.overall_hits::4" coming from? 3. I have read all stats.txt, and I didn't find any main memory access statistic. So can I deduce the memory read and write from L2 statistics? For example, # main memory read requests == l2.replacement # main memory write requests == l2.writeback is that correct? Many thanks in advance. Bests Dawei
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