Date: Fri, 13 Mar 2015 15:58:27 -0400 From: Rich Felker <dalias@...c.org> To: musl@...ts.openwall.com Subject: Re: musl 14x slower? On Fri, Mar 13, 2015 at 03:53:20PM -0400, John Mudd wrote: > Please cc me on replies. > > I built Postgres with musl. I used version 1.1.0. That works well and I've > been distributing musl Postgres in production. > > I still have an install running a previous build using standard libc from > and old 2.4 kernel build. The "native" build runs 14x faster. And this is > not trying to do anything fancy, just sequentially reading records from a > 400 MB Postgres table. > > native: 0:25 > musl: 5:42 > > I know my musl version is dated but is this slow performance to be expected? No. Is it possible that you built musl and/or the musl-linked postgresql with -O0? I would suggest using perf(1) to measure where all the additional time is being spent. Rich
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