Hi!
I want to test the cache miss rate of the cloudsuite. And I used flexus
simulator.
parameters below:
0-9 phases , after 400b cycles to get a simics checkpoint called phase_00*
use the trace option "rungen trace" for each phase.
flexus.set "-magic-break:stop_cycle" "200000000"
flexus.set-region-interval "100000000"
And my command is :
[root@localhost flexus-4.1]# run_job -postprocess
"/home/zhangwuxiang/flexus-4.1/scripts/postprocess_ckptgen.sh trace cassandra"
-cfg trace -run trace -local -ckpt-gen CMP.L2Shared.Trace cassandra/2cpu
I do not know this measure method is right or not. It run 200m cycles with
CMP.L2Shared.Trace simulator for each phase.
I used the sum measurement to get it statics. It shows the l1i statics are
totally different with different number of cores . For example:
1 cpu for phase0 of cassandra:
Nodes-L1i-Hits:Fetch:Owned 0
Nodes-L1i-Hits:Fetch:Shared 198112078
Nodes-L1i-Hits:NAW:Exclusive 0
Nodes-L1i-Hits:NAW:Migratory 0
Nodes-L1i-Hits:NAW:Modified 0
Nodes-L1i-Hits:Read:Exclusive 0
Nodes-L1i-Hits:Read:Migratory 0
Nodes-L1i-Hits:Read:Modified 0
Nodes-L1i-Hits:Read:Owned 0
Nodes-L1i-Hits:Read:Shared 0
Nodes-L1i-Hits:Upgrade:Exclusive 0
Nodes-L1i-Hits:Upgrade:Migratory 0
Nodes-L1i-Hits:Upgrade:Modified 0
Nodes-L1i-Hits:Write:Exclusive 0
Nodes-L1i-Hits:Write:Migratory 0
Nodes-L1i-Hits:Write:Modified 0
Nodes-L1i-Misses:Evict:Invalid 0
Nodes-L1i-Misses:EvictD:Invalid 0
Nodes-L1i-Misses:EvictD:Owned 0
Nodes-L1i-Misses:EvictD:Shared 0
Nodes-L1i-Misses:EvictWritable:Invalid 0
Nodes-L1i-Misses:EvictWritable:Owned 0
Nodes-L1i-Misses:EvictWritable:Shared 0
Nodes-L1i-Misses:Fetch:Invalid 1678686
......
2 cpu for phase0 of cassandra:
sys-L1i-Hits:Fetch:Owned 0
sys-L1i-Hits:Fetch:Shared 994919426
sys-L1i-Hits:NAW:Exclusive 0
sys-L1i-Hits:NAW:Migratory 0
sys-L1i-Hits:NAW:Modified 0
sys-L1i-Hits:Read:Exclusive 0
sys-L1i-Hits:Read:Migratory 0
sys-L1i-Hits:Read:Modified 0
sys-L1i-Hits:Read:Owned 0
sys-L1i-Hits:Read:Shared 0
sys-L1i-Hits:Upgrade:Exclusive 0
sys-L1i-Hits:Upgrade:Migratory 0
sys-L1i-Hits:Upgrade:Modified 0
sys-L1i-Hits:Write:Exclusive 0
sys-L1i-Hits:Write:Migratory 0
sys-L1i-Hits:Write:Modified 0
sys-L1i-Misses:Evict:Invalid 0
sys-L1i-Misses:EvictD:Invalid 0
sys-L1i-Misses:EvictD:Owned 0
sys-L1i-Misses:EvictD:Shared 0
sys-L1i-Misses:EvictWritable:Invalid 0
sys-L1i-Misses:EvictWritable:Owned 0
sys-L1i-Misses:EvictWritable:Shared 0
sys-L1i-Misses:Fetch:Invalid 4896786
....
Why are they so different? Is anything wrong with my measure method? Please let
me know how to test the cache miss rate. Thank you.
2013-07-03
Best Regards!
MAIL: [email protected]
