Messages in this thread | | | Subject | Re: hackbench regression due to commit 9dfc6e68bfe6e | From | Eric Dumazet <> | Date | Thu, 08 Apr 2010 06:59:34 +0200 |
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Le jeudi 08 avril 2010 à 09:05 +0800, Zhang, Yanmin a écrit :
> > Do we have a user program to check actual L1 cache size of a machine ? > If there is no, it's easy to write it as kernel exports the cache stat by > /sys/devices/system/cpu/cpuXXX/cache/indexXXX/
Yes, this is what advertizes my L1 cache having 64bytes lines, but I would like to check that in practice, this is not 128bytes...
./index0/type:Data ./index0/level:1 ./index0/coherency_line_size:64 ./index0/physical_line_partition:1 ./index0/ways_of_associativity:8 ./index0/number_of_sets:64 ./index0/size:32K ./index0/shared_cpu_map:00000101 ./index0/shared_cpu_list:0,8 ./index1/type:Instruction ./index1/level:1 ./index1/coherency_line_size:64 ./index1/physical_line_partition:1 ./index1/ways_of_associativity:4 ./index1/number_of_sets:128 ./index1/size:32K ./index1/shared_cpu_map:00000101 ./index1/shared_cpu_list:0,8
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