Pavlos,
Did you look at the changes in CacheProfiler.cc? Currently, ruby
counts (refers to) all cache accesses as 'misses' which is a bit
misleading. This patch changes that to correctly account for when a
cache access is a 'hit' versus a 'miss' (as in it has to go up to the
next level memory to satisfy the request). In doing so,
CacheProfiler.cc prints the ratio of misses/accesses:
out << description << "_miss_rate: " << 100.0 * m_misses / m_accesses
64
<< "%" << endl;
If you notice, "out" in this case references the std::outstream, which
is the ruby.stats file.
This is done on a per-cache basis, unless you want sum global
misses/accesses that accounts for all caches misses/accesses for every
cache into one value ?
Malek
On Tue, Nov 20, 2012 at 12:29 PM, Pavlos Maniotis <[email protected]> wrote:
> Hello Malek,
>
> Thanks for the reply.
> ruby.stats file reports the absolute number of cache misses but
> I need its proportion to all cache accesses. I can't understand
> how this patch will help me. Will it print the cache ratio (%) in
> ruby.stats file?
>
> Pavlos
>
> On Tue, 2012-11-20 at 11:38 -0500, Malek Musleh wrote:
>> Hi Pavlos,
>>
>> I have a patch posted here for this:
>>
>> http://reviews.gem5.org/r/1467/
>>
>> I only added support for MESI/MOESI Protocols, but you can extend to
>> the other ones also.
>>
>> Malek
>>
>> On Tue, Nov 20, 2012 at 11:09 AM, Pavlos Maniotis <[email protected]>
>> wrote:
>> > Hello everyone,
>> >
>> > Is there anybody who knows how to calculate miss
>> > ratio using ruby? I think a step by step explanation
>> > would help a lot of us working on gem5.
>> >
>> > Thanks in advance,
>> > Pavlos
>> >
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