From 304c919829f9f340669b61fa64867cfe5dba8021 Mon Sep 17 00:00:00 2001 From: Qi Wang Date: Wed, 27 Apr 2022 18:05:07 -0700 Subject: [PATCH] Update ChangeLog for 5.3.0. --- ChangeLog | 100 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 100 insertions(+) diff --git a/ChangeLog b/ChangeLog index e55813b7..32fde562 100644 --- a/ChangeLog +++ b/ChangeLog @@ -4,6 +4,106 @@ brevity. Much more detail can be found in the git revision history: https://github.com/jemalloc/jemalloc +* 5.3.0 (May 6, 2022) + + This release contains many speed and space optimizations, from micro + optimizations on common paths to rework of internal data structures and + locking schemes, and many more too detailed to list below. Multiple percent + of system level metric improvements were measured in tested production + workloads. The release has gone through large-scale production testing. + + New features: + - Add the thread.idle mallctl which hints that the calling thread will be + idle for a nontrivial period of time. (@davidtgoldblatt) + - Allow small size classes to be the maximum size class to cache in the + thread-specific cache, through the opt.[lg_]tcache_max option. (@interwq, + @jordalgo) + - Make the behavior of realloc(ptr, 0) configurable with opt.zero_realloc. + (@davidtgoldblatt) + - Add 'make uninstall' support. (@sangshuduo, @Lapenkov) + - Support C++17 over-aligned allocation. (@marksantaniello) + - Add the thread.peak mallctl for approximate per-thread peak memory tracking. + (@davidtgoldblatt) + - Add interval-based stats output opt.stats_interval. (@interwq) + - Add prof.prefix to override filename prefixes for dumps. (@zhxchen17) + - Add high resolution timestamp support for profiling. (@tyroguru) + - Add the --collapsed flag to jeprof for flamegraph generation. + (@igorwwwwwwwwwwwwwwwwwwww) + - Add the --debug-syms-by-id option to jeprof for debug symbols discovery. + (@DeannaGelbart) + - Add the opt.prof_leak_error option to exit with error code when leak is + detected using opt.prof_final. (@yunxuo) + - Add opt.cache_oblivious as an runtime alternative to config.cache_oblivious. + (@interwq) + - Add mallctl interfaces: + + opt.zero_realloc (@davidtgoldblatt) + + opt.cache_oblivious (@interwq) + + opt.prof_leak_error (@yunxuo) + + opt.stats_interval (@interwq) + + opt.stats_interval_opts (@interwq) + + opt.tcache_max (@interwq) + + opt.trust_madvise (@azat) + + prof.prefix (@zhxchen17) + + stats.zero_reallocs (@davidtgoldblatt) + + thread.idle (@davidtgoldblatt) + + thread.peak.{read,reset} (@davidtgoldblatt) + + Bug fixes: + - Fix the synchronization around explicit tcache creation which could cause + invalid tcache identifiers. This regression was first released in 5.0.0. + (@yoshinorim, @davidtgoldblatt) + - Fix a profiling biasing issue which could cause incorrect heap usage and + object counts. This issue existed in all previous releases with the heap + profiling feature. (@davidtgoldblatt) + - Fix the order of stats counter updating on large realloc which could cause + failed assertions. This regression was first released in 5.0.0. (@azat) + - Fix the locking on the arena destroy mallctl, which could cause concurrent + arena creations to fail. This functionality was first introduced in 5.0.0. + (@interwq) + + Portability improvements: + - Remove nothrow from system function declarations on macOS and FreeBSD. + (@davidtgoldblatt, @fredemmott, @leres) + - Improve overcommit and page alignment settings on NetBSD. (@zoulasc) + - Improve CPU affinity support on BSD platforms. (@devnexen) + - Improve utrace detection and support. (@devnexen) + - Improve QEMU support with MADV_DONTNEED zeroed pages detection. (@azat) + - Add memcntl support on Solaris / illumos. (@devnexen) + - Improve CPU_SPINWAIT on ARM. (@AWSjswinney) + - Improve TSD cleanup on FreeBSD. (@Lapenkov) + - Disable percpu_arena if the CPU count cannot be reliably detected. (@azat) + - Add malloc_size(3) override support. (@devnexen) + - Add mmap VM_MAKE_TAG support. (@devnexen) + - Add support for MADV_[NO]CORE. (@devnexen) + - Add support for DragonFlyBSD. (@devnexen) + - Fix the QUANTUM setting on MIPS64. (@brooksdavis) + - Add the QUANTUM setting for ARC. (@vineetgarc) + - Add the QUANTUM setting for LoongArch. (@wangjl-uos) + - Add QNX support. (@jqian-aurora) + - Avoid atexit(3) calls unless the relevant profiling features are enabled. + (@BusyJay, @laiwei-rice, @interwq) + - Fix unknown option detection when using Clang. (@Lapenkov) + - Fix symbol conflict with musl libc. (@georgthegreat) + - Add -Wimplicit-fallthrough checks. (@nickdesaulniers) + - Add __forceinline support on MSVC. (@santagada) + - Improve FreeBSD and Windows CI support. (@Lapenkov) + - Add CI support for PPC64LE architecture. (@ezeeyahoo) + + Incompatible changes: + - Maximum size class allowed in tcache (opt.[lg_]tcache_max) now has an upper + bound of 8MiB. (@interwq) + + Optimizations and refactors (@davidtgoldblatt, @Lapenkov, @interwq): + - Optimize the common cases of the thread cache operations. + - Optimize internal data structures, including RB tree and pairing heap. + - Optimize the internal locking on extent management. + - Extract and refactor the internal page allocator and interface modules. + + Documentation: + - Fix doc build with --with-install-suffix. (@lawmurray, @interwq) + - Add PROFILING_INTERNALS.md. (@davidtgoldblatt) + - Ensure the proper order of doc building and installation. (@Mingli-Yu) + * 5.2.1 (August 5, 2019) This release is primarily about Windows. A critical virtual memory leak is