🚀 go-pugleaf

>If you don't have a write-back cache then you will stall every time
>you fill up your write-post buffer. 

So make the write post buffers big enough that you don't stall very much.

(I rather like the idea of a trickle-back cache, where write-back data
is left in the cache for subsequent access, with only a tag put in the
write-back queue.  Plus combining in the write-back queue (two writes
to same location do not both need to go through (modulo your consistency
model)) this gets close to write-back, possibly with less control.

But then, write-back isn't *that* hard to do. Norm Jouppi says it's
easier than write buffering...
--
Andy "Krazy" Glew,  UIUC ECE
aglew@uiuc.edu  (afgg6490@uxa.cso.uiuc.edu)

(Formerly of Motorola MCD Urbana)