We had the author of LIRS come to Facebook last year to talk about his algorithm and general benefits. At the time, we were looking at increasing block cache efficiency. The general consensus was that it wasn't an exponential perf gain, so we could get bigger wins from cache-on-write intelligence, in-memory data compression techniques, and adding stats so we could understand how to tune the existing LRU algorithm. I still think that these 3 goals are more important at the moment because LIRS would be a decent bit of code and only incremental gain. It's probably something to revisit in a year or two.
Nicolas On 2/21/12 8:26 AM, "[email protected]" <[email protected]> wrote: >Hi, >Shall we experiment with low inter-reference recency set replacement >policy to see if block cache becomes more effective ? > >Cheers > >
