Hi Andreas,

[Moving discussion from http://reviews.gem5.org/r/2109]

If I only increase the tCL parameter from 13.75ns to 61ns [4.4x times
default DDR3), then I notice 3.2x times increase in avgMemAccLat. This is
what we should expect. Can we use tCL to simulate slow DDR3?  My
understanding is that, we cannot do that because tCL represents column
address strobe and it affects bandwidth.

But I cannot produce the same result by changing tRCD = '61ns', tRP =
'165ns'. tRCD affects read latency and tRP affects write latency. I only
get an increase in avgMemAccLat by 1.2x times default DDR3.

Results:

For default DDR3:
avgMemAccLat                22133.24
totMemAccLat             12166996811

For tRCD = '61ns', tRP = '165ns'.
avgMemAccLat                27473.08
totMemAccLat             15104591550

For tCL = '61ns'
avgMemAccLat                71630.94
totMemAccLat             39376746052

 I did not find any 'bytesPerActive' attribute in stats file. Where shall I
see this?

Thanks.
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