eugenis added inline comments.
================ Comment at: docs/TaggedAddressSanitizerDesign.rst:22 +*quarantine* to find use-after-free. +The shadow, the redzones, and the quarantine are the +major sources of AddressSanitizer's memory overhead. ---------------- kcc wrote: > davidxl wrote: > > What is the overhead of redzones compared with shadow memory? > depends. > shadow is 1/9 of all memory. > redzones largely depend on the allocation patterns. > If most heap allocations are big, the combined redzones are tiny, and vise > versa > It's worth mentioning that typical ASan memory overhead of 2x to 3x, mainly from redzones and quarantine. This new tool will have only the shadow, which is a tiny fraction of the original memory footprint, and some overhead from over-aligning everything. The latter is expected to be small, especially if N (see below) is reduced to 16 or even 8, in which case the shadow grows to 1/16th or 1/8th, respectively. In any case, I'd expect less than 25% RAM overhead, hopefully way less. Repository: rC Clang https://reviews.llvm.org/D40568 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits