Date: Tue, 10 Mar 2020 10:32:08 +0100 From: Kaisrlík, Jan <jan.kaisrlik@...st.com> To: musl@...ts.openwall.com Subject: musl and jemalloc support Hello guys, I would like to ask about the support of external malloc and jemalloc. I find an old mail in ML claiming that support is not there and using external malloc function can potentially cause problems and a thread on jemalloc saying the same. On the other hand, I find a lot of pages comparing speed like pages  and also I noticed that Musl claims "replacement of malloc is now allowed/supported" statement in changelog . So, my expectation is Musl from version 1.1.20 supports the loading of external malloc function and it is working. Is my assumption correct? Does it have any limitations, e.g., it has to be done in compilation time, is LD_PRELOAD supported? The reason why I'm asking is that some apps started crashing with a weird coredump from the moment I used LD_PRELOAD=/usr/lib/libjemalloc.so.2:/usr/lib/libpthread.so. Thank you for your answer. The best, Jan : https://www.openwall.com/lists/musl/2014/08/08/11 : https://github.com/jemalloc/jemalloc/issues/1443 : https://users.rust-lang.org/t/optimizing-rust-binaries-observation-of-musl-versus-glibc-and-jemalloc-versus-system-alloc/8499/7 : https://git.musl-libc.org/cgit/musl/tree/WHATSNEW#n1916
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