> On Dec. 8, 2016, 11:32 p.m., Matthew Poremba wrote:
> > Any chance we could ship this finally? I have been using this for months 
> > without any issues and have some new patches I would like to push out that 
> > depend on this one.

Sure. I'll try to get this patch pushed next week, and I'll review your updated 
stats patch shortly.


- Joel


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On Jan. 17, 2016, 11:47 p.m., Joel Hestness wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> http://reviews.gem5.org/r/3283/
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> 
> (Updated Jan. 17, 2016, 11:47 p.m.)
> 
> 
> Review request for Default.
> 
> 
> Repository: gem5
> 
> 
> Description
> -------
> 
> Changeset 11298:1af0000a8d03
> ---------------------------
> ruby: Make MessageBuffers actually finite sized
> 
> When Ruby controllers stall messages in MessageBuffers, the buffer moves those
> messages off the priority heap and into a per-address stall map. When buffers
> are finite-sized, the test areNSlotsAvailable() only checks the size of the
> priority heap, but ignores the stall map, so the map is allowed to grow
> unbounded if the controller stalls numerous messages. This patch fixes the
> problem by tracking the stall map size and testing the total number of 
> messages
> in the buffer appropriately.
> 
> 
> Diffs
> -----
> 
>   src/mem/ruby/network/MessageBuffer.hh d1f8610cdffd 
>   src/mem/ruby/network/MessageBuffer.cc d1f8610cdffd 
> 
> Diff: http://reviews.gem5.org/r/3283/diff/
> 
> 
> Testing
> -------
> 
> Multiple tests to exercise the capacity of buffers, including high bandwidth
> demand and MLP situations concurrently accessing numerous different line
> addresses. Regressions are unchanged, since they do not use finite-sized
> buffering.
> 
> NOTE: When using finite-sized buffers, this fix can cause decreased
> performance due to insufficient buffering, a condition that was masked with
> the unbounded stall map. Users may need to adjust buffer sizes to revalidate
> performance.
> 
> 
> Thanks,
> 
> Joel Hestness
> 
>

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