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erlang
3523-erts-Decrease-super-alignment-on-64-bit.patch
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File 3523-erts-Decrease-super-alignment-on-64-bit.patch of Package erlang
From 96860fdcdb48bb0eb53e79758be072a2eb265a2e Mon Sep 17 00:00:00 2001 From: Sverker Eriksson <sverker@erlang.org> Date: Mon, 19 Apr 2021 18:20:44 +0200 Subject: [PATCH 3/3] erts: Decrease super alignment on 64-bit From 256kb to 16kb. --- erts/emulator/beam/erl_alloc_util.h | 2 +- erts/emulator/sys/common/erl_mmap.h | 6 +++++- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/erts/emulator/beam/erl_alloc_util.h b/erts/emulator/beam/erl_alloc_util.h index 359457913c..45e5bfc211 100644 --- a/erts/emulator/beam/erl_alloc_util.h +++ b/erts/emulator/beam/erl_alloc_util.h @@ -298,7 +298,7 @@ void erts_alcu_sched_spec_data_init(struct ErtsSchedulerData_ *esdp); # ifdef MSEG_ALIGN_BITS # define ERTS_SUPER_ALIGN_BITS MSEG_ALIGN_BITS # else -# define ERTS_SUPER_ALIGN_BITS 18 +# define ERTS_SUPER_ALIGN_BITS ERTS_MMAP_SUPERALIGNED_BITS # endif # ifdef ARCH_64 # define MBC_ABLK_OFFSET_BITS 24 diff --git a/erts/emulator/sys/common/erl_mmap.h b/erts/emulator/sys/common/erl_mmap.h index d45bea7b6f..a34763a754 100644 --- a/erts/emulator/sys/common/erl_mmap.h +++ b/erts/emulator/sys/common/erl_mmap.h @@ -24,8 +24,12 @@ #include "sys.h" #include "erl_printf.h" -#define ERTS_MMAP_SUPERALIGNED_BITS (18) +#if defined(ARCH_64) +# define ERTS_MMAP_SUPERALIGNED_BITS (14) +#else +# define ERTS_MMAP_SUPERALIGNED_BITS (18) /* Affects hard limits for sbct and lmbcs documented in erts_alloc.xml */ +#endif #ifndef HAVE_MMAP # define HAVE_MMAP 0 -- 2.26.2
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