On Wed, Sep 24, 2014 at 03:04:13PM +0100, Matt Fleming wrote: > From: Matt Fleming <[email protected]> > > It's possible to run into issues with re-using unused monitoring IDs > because there may be stale cachelines associated with that ID from a > previous allocation. This can cause the LLC occupancy values to be > inaccurate. > > To attempt to mitigate this problem we place the IDs on a least recently > used list, essentially a FIFO. The basic idea is that the longer the > time period between ID re-use the lower the probability that stale > cachelines exist in the cache.
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