[PATCH] D86694: [scudo] Allow -fsanitize=scudo on Linux and Windows (WIP, don't land as is)

Wed Sep 16 12:28:31 PDT 2020

aganea added a comment.

In D86694#2277456 <https://reviews.llvm.org/D86694#2277456>, @cryptoad wrote:

> I didn't try to make the Exclusive version work, mostly because I was using the Windows TLS API and the Shared fit right in with those, but it would get rid of a lot of the contention.

That sounds good. Right now, the delta between rpmalloc/mimalloc/snmalloc is less than 5 sec (for a run of 2 min 15 sec), I would assume with the Exclusive mode, SCUDO would fall in the same ballpark. Any other allocator that I've tried that does some level of locking (Hoard, ptmalloc, tcmalloc2) does not scale (is much slower) on many-cores machines.

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