Hello everyone,
I have the same question. What does response latency in gem5 mean? And the hit 
latency is the read latency or the write latency?
Thanks.

--
Hongyuan Ding

On Mar 22, 2013, at 1:03 PM, Maxime Chéramy 
<[email protected]<mailto:[email protected]>> wrote:

Hello,

Taking the common/Caches.py as an example:

class L1Cache(BaseCache):
    assoc = 2
    hit_latency = 2
    response_latency = 2
    block_size = 64
    mshrs = 4
    tgts_per_mshr = 20
    is_top_level = True

class L2Cache(BaseCache):
    assoc = 8
    block_size = 64
    hit_latency = 20
    response_latency = 20
    mshrs = 20
    tgts_per_mshr = 12
    write_buffers = 8

Let's say the data we're referencing is in L1. The total latency is 2 or (2 + 
2) ? Same question if the data is in the L2 (and not the L1), the total latency 
is 20, (2 + 20), (20 + 20) or (2 + 20 + 20 + 2) ?

Does the latency affect read misses or both read and write misses?

Thanks for the clarifications.

Best regards,

Maxime.

2013/3/18 Amin Farmahini <[email protected]<mailto:[email protected]>>
This<http://reviews.gem5.org/r/1404/> explains what response latency is.


Thanks,
Amin


On Sun, Mar 17, 2013 at 9:44 PM, Pavlos Maniotis 
<[email protected]<mailto:[email protected]>> wrote:
Hello everyone,

Could you please explain me what exactly is the response_latency in
BaseCache.py and its relationship to the hit latency?

Thanks in advance,
Pavlos

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