On Thursday, April 17, 2014, Merlin Moncure <
mmoncure@gmail.com> wrote:
yeah -- the thing is, we are already too spendy already on
supplemental write i/o (hint bits, visible bits, freezing, etc) and
likely not worth it to throw something else on the pile unless the
page is already dirty; the medium term trend in storage is that read
vs write performance is becoming increasingly asymmetric, particularly
on the random side so it's very unlikely to balance out.
Guess I wasn't clear but I was thinking to read the page in, not do any writing, and do it in a asynchronous way to the process doing the evicting.
Thanks,
Stephen