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* rickard/sched-busy-wait/OTP-10044:
Add switch controlling scheduler busy wait
Conflicts:
erts/emulator/beam/erl_process.c
erts/emulator/beam/erl_process.h
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rickard/sched-wakeup-other-r15b01/OTP-10033
Conflicts:
erts/emulator/beam/erl_process.c
erts/vsn.mk
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* ta/docs-maint:
Fix typos in ct getting_started_chapter.xml
Fix typos in driver.xml and erl_driver.xml
Fix typos in INSTALL-WIN32.md
OTP-10037
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* raimo/close-ports-on-halt/OTP-9985:
erts: Basic test of erlang:halt/0..2
erts: Document erlang:halt/2 and update erlang:halt/0,1
erts: Implement erlang:halt/2
stdlib: Stop working around erlang:halt not flushing
erts: Make erlang:halt/0,1 close ports and flush async threads
erts: Remove forgotten and unused function erl_exit0
erts: Implement erl_halt
erts: Remove unused ntbuild.erl
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* Add example on calculating scheduler utilization
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* bjorn/remove-is_constant-vestiges/OTP-6454:
HiPE: Remove support for is_constant/1
erl_lint: Remove handling of constant/1
erl_bif_types: Remove type for is_constant/1
erl_eval: Remove support for is_constant/1
Remove support for is_constant/1 in ms_transform
Remove references to is_constant/1 from the match spec documentation
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* dgud/sched-work-time/OTP-9858:
emulator: Document and test scheduler_wall_time
Implement statistics(scheduler_wall_time)
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is_constant/1 was removed in R13B.
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* raimo/driver-API-doc:
Driver API: Update documentation for 64-bit sizes
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* sverk/packet_size-http/OTP-9389:
erts: Remove truncation of http packet parsing and return error instead
honor packet_size for http packet parsing to fix OTP-9389
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This is a slight modification of previous commit by Steve Vinoski
For backward compatibility of old users of decode_packet, I think it's enough
to return error instead of keeping the old line truncation behaviour.
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* sverk/deprecate-nif-reload:
erts: Deprecate the NIF reload mechanism
OTP-9771
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* rickard/deprecate-runtime-binding/OTP-9749:
Deprecate erlang:system_flag/2 arguments scheduler_bind_type and cpu_topology
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The use of erlang:system_flag(scheduler_bind_type, _) and
erlang:system_flag(cpu_topology, _) have been deprecated and scheduled
for removal in erts-5.10/OTP-R16. For more information see the
documentation of erlang:system_flag/2.
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* rickard/default-unbound/OTP-9726:
Use unbound schedulers as default
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The reload mechanism is an odd feature that does not harmonize
with how module upgrade is otherwise done. We do not want its presence
to hinder future development of code loading and upgrade.
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As of ERTS version 5.9 (OTP-R15B) the runtime system will by default
not bind schedulers to logical processors.
If the Erlang runtime system is the only operating system process that
binds threads to logical processors, this improves the performance of
the runtime system. However, if other operating system processes (as
for example another Erlang runtime system) also bind threads to logical
processors, there might be a performance penalty instead. In some cases
this performance penalty might be severe. Due to this, we change the
default so that the user must make an active decision in order to bind
schedulers.
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* rickard/sched-compact-load/OTP-9695:
Add switch that can disable scheduler compaction of load
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* fm/process_info_doc_fix:
Fix documentation for erlang:process_flag/2
OTP-9714
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* rickard/generic-thr-queue/OTP-9632:
Use generic lock-free queue for async threads
Use generic lock-free queue for misc aux work
Implement generic lock-free queue
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* rickard/alloc-opt/OTP-7775:
Optimize memory allocation
Conflicts:
erts/aclocal.m4
erts/emulator/hipe/hipe_bif_list.m4
erts/preloaded/ebin/erl_prim_loader.beam
erts/preloaded/ebin/erlang.beam
erts/preloaded/ebin/init.beam
erts/preloaded/ebin/otp_ring0.beam
erts/preloaded/ebin/prim_file.beam
erts/preloaded/ebin/prim_inet.beam
erts/preloaded/ebin/prim_zip.beam
erts/preloaded/ebin/zlib.beam
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Queues used for communication between async threads and scheduler threads
have been replaced with lock-free queues.
Drivers using the driver_async functionality are not automatically locked
to the system anymore, and can be unloaded as any dynamically linked in
driver.
Scheduling of ready async jobs is now also interleaved in between other
jobs. Previously all ready async jobs was performed at once.
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A number of memory allocation optimizations have been implemented. Most
optimizations reduce contention caused by synchronization between
threads during allocation and deallocation of memory. Most notably:
* Synchronization of memory management in scheduler specific allocator
instances has been rewritten to use lock-free synchronization.
* Synchronization of memory management in scheduler specific
pre-allocators has been rewritten to use lock-free synchronization.
* The 'mseg_alloc' memory segment allocator now use scheduler specific
instances instead of one instance. Apart from reducing contention
this also ensures that memory allocators always create memory
segments on the local NUMA node on a NUMA system.
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* rj/fix-remove-exec-bit:
Remove exec bit from files: info files, dat, bat
Remove exec bit from files related to: XML, make, C
Remove exec bit from: erl, hrl, xml, html, asn, gif, xpm
OTP-9698
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* rj/fix-erlang-doc-style:
Fixes module erlang doc style: option description
OTP-9697
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