improve free latency
bpowers opened this issue · comments
Free performance is bad:
First, add stats collection. What fraction of the time do we hit a thread-local free?
Next, switch from iterating over buckets to (maybe) caching 1 or 2 buckets and then going through the global miniheap table.
Finally, add stats and look at whether we can more effectively batch calls to madvise and friends.
Free performance is much better:
We could still improve global frees, but closing this for now as we've picked the low hanging fruit