Marcus Tshibangu via gem5-users <gem5-users <at> gem5.org> writes:
> > is miss rate only computed on read requests? because all the stats.txt I look, they don't account for write requests at all. here is an example: > > system.l2.ReadExReq_accesses::total 12365514 # number of ReadExReq accesses(hits+misses) > system.l2.ReadReq_accesses::total 73364986 # number of ReadReq accesses(hits+misses) > system.l2.overall_accesses::total 85730500 # number of overall (read+write) accesses > system.l2.overall_misses::total 5217265 # number of overall misses > > > system.l2.overall_miss_rate::total 0.060857 # miss rate for overall accesses > > system.l2.Writeback_accesses::writebacks 67311441 # number of Writeback accesses(hits+misses) > system.l2.Writeback_hits::total 67311441 # number of Writeback hits > > > in the above sample statistics, it looks as l2.overall_accesses=85,730,500 is not really read+write, but it's only ReadExReq+ReadReq = 85,730,500 and the miss_rate = 5217265/85,730,500 = 0.060857 > in no way there is any write_backs accounted for in this miss rate calculation > > 2nd when I look at writeback_accesses (hits+misses) = writeback_hits, does this means that every single write back from cpu to L2 was ALWAYS a hit?? this doesn't look right. > > Any body with a good explanation on these two issues? I might have missed something very obvious here > > > > > > _______________________________________________ > gem5-users mailing list > gem5-users <at> gem5.org > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users _______________________________________________ gem5-users mailing list [email protected] http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
