Date: Fri, 29 Nov 2019 09:37:15 +0300 From: Vasya Boytsov <vasiliy.boytsov@...stech.edu> To: musl@...ts.openwall.com Subject: Re: New malloc - first preview Is your malloc implementation any better than https://github.com/microsoft/mimalloc? AFAIK one can use mimalloc in their projects as it has compatible license. the only thing that bothers is that it is done by Microsoft research. On 11/29/19, Rich Felker <dalias@...c.org> wrote: > On Thu, Nov 28, 2019 at 04:56:42PM -0500, Rich Felker wrote: >> Work on the new malloc is well underway, and I have a draft version >> now public at: >> >> https://github.com/richfelker/mallocng-draft >> >> Some highlights: >> >> - Smallest size-class now has 12 of 16 bytes usable for storage, >> compared to 8 of 16 (32-bit archs) or 16 of 32 (64-bit archs) with >> the old malloc, plus 1.5 bytes (32-bit) or 2.5 bytes (64-bit) of >> out-of-band metadata. This overhead (5.5 or 6.5 bytes per >> allocation) is uniform across all sizes. > > Make that 6 or 7 since there's also a 16-byte (counting alignment, > which is most of it) group header that imposes 0.5 bytes of overhead > per slot for a full-length 32-slot group. > > Rich > -- Respectfully, Boytsov Vasya
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