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* maint:
Fix observer retrieval of alloc info
Fix documentation of the +MMsco switch
Replace the +MMscmgc switch with +MMscrfsd
Add switch for disabling sys_alloc carriers
Add support for locking mappings to physical memory
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* rickard/supercarrier-fix/OTP-11149:
Fix observer retrieval of alloc info
Fix documentation of the +MMsco switch
Replace the +MMscmgc switch with +MMscrfsd
Add switch for disabling sys_alloc carriers
Add support for locking mappings to physical memory
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* sverk/cerl-gdb-fix:
erts: Fix cerl -gdb
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by replacing all newlines in $beam_args with space
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* maint:
erts: Add cerl -dump and dumping in z_SUITE
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Replaced the +MMscmgc switch with the +MMscrfsd switch. The old switch
didn't reflect what it controlled.
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The switch "+Musac <boolean>" controls if sys_alloc carriers
are allowed.
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Using "+Mlpm all" switch all mappings made by the emulator will
be locked into physical memory.
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Conflicts:
erts/preloaded/ebin/erlang.beam
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* rickard-sverker/supercarrier/OTP-11149: (29 commits)
erts: Add test case for erts_mmap
erts: Add mutex to init_atoms in erts_mmap.c
erts: Fix lock violation for init_atoms in erl_mmap.c
erts: Fix misc minor bugs in supercarrier initialization
erts: Add erts_mmap stats
erts: Add erts_bld_tupleX macros
erts: Rename erts_bld_atom_uint_2tup_list to *_uword_*
erts: Fix bug in lookup_free_seg
erts: Fix race bug in erts_munmap
erts: Add HARD_DBG_MSEG
erts: Refactor rbt_insert in erl_mmap
erts: erts_mmap improved free seg desc management
erts: Add documentation for +MMsc* system flags
erts: Allow page aligned erts_munmap()
erts: Sort tree in super aligned sizes (SA_SZ_ADDR_ORDER)
erts: Fix ASSERT bug and void* arithmetics
erts: Add mmap argument to erts_debug:get_internal_state
erts: Improve erts_mmap out of free descriptor management
erts: Cleanup erl_mmap
erts: Add __func__ to ERTS_ASSERT macro
...
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* nox/silent-rules-fixes/OTP-11351:
Fix two small silent rules omissions
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* Coalescing and trimming of free segments in supercarrier
* Management of super aligned and super unaligned areas in
supercarrier
* Management of reservation of physical memory
* erts_mseg usage of erts_mmap
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The 'erlc' program passes options to the 'erl' program using
the '-s' option. The '-s' option causes all options to be converted
to atoms, which implies that UTF-8 file names may not be given on
the command line.
We could solve just the UTF-8 problem by using '-run' and change
the erl_compile module to expect strings instead of atoms, but since
that is an incompatible change, we should take the opportunity to
make more incompatible changes while we are at it.
Specifically, when 'erlc' was first written, there was no way to pass
command line arguments starting with '-' to Erlang, so 'erlc' did all
parsing of arguments and translated options to atoms starting with a
'@' character (for example, -I was translated to @i). Since then,
the '-extra' option has been introduced which allows us to pass
anything to Erlang at the end of the command line.
Therefore, while at it, do the minimum of necessary command line
parsing in the 'erlc' program (e.g. the '-smp' option), passing the
command line essentially unchanged to 'erl' using the '-extra' option,
and rewrite the option parsing in Erlang.
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config.h defines HAVE_SYSLOG_H whereas the sources are looking for
NO_SYSLOG to be undefined. As the logic of "if feature is available"
makes more sense than "if feature is not unavailable", I opted for the
config.h define.
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* lukas/erts/erl_exec_e:
+e should be passed through erlexec
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* sverk/valgrind-single-core:
erts: Speed up valgrind with asynch threads
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* maint:
add erl option to set schedulers by percentages
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For applications where measurements show enhanced performance from the use
of a non-default number of emulator scheduler threads, having to accurately
set the right number of scheduler threads across multiple hosts each with
different numbers of logical processors is difficult because the erl +S
option requires absolute numbers of scheduler threads and scheduler threads
online to be specified.
To address this issue, add a +SP option to erl, similar to the existing +S
option but allowing the number of scheduler threads and scheduler threads
online to be set as percentages of logical processors configured and
logical processors available, respectively. For example, "+SP 50:25" sets
the number of scheduler threads to 50% of the logical processors
configured, and the number of scheduler threads online to 25% of the
logical processors available. The +SP option also interacts with any
settings specified with the +S option, such that the combination of options
"+S 4:4 +SP 50:50" (in either order) results in 2 scheduler threads and 2
scheduler threads online.
Add documentation for the +SP option.
Add tests for the +SP option to scheduler_SUITE.
Add tests and documentation for two existing features of the +S option: +S
0:0 resets the scheduler thread count and scheduler threads online count to
their defaults, and specifying negative numbers for +S results in those
values being subtracted from the default values for the host.
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by only letting it run on one core. Valgrind only let one thread
at a time execute anyway.
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* maint:
etp: Do not use name as beam.smp is the name on Linux
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* maint:
erts: Create gdb pything script for thread listing
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* weisslj/run-erl-redirect-dev-null/OTP-11215:
run_erl: Redirect standard streams to /dev/null
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* sze/to_erl/OTP-11206:
Fix changing terminal parameters in to_erl
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One of our devices does not like 'to_erl' to be run over a serial port.
When to_erl is started, we see "Attaching to /tm<0xFF>" being printed
and the device then refuses to accept any input. Occasionally, we have
seen a linux kernel error message "serial8250: too much work for irq16"
simultaneously. After some debugging we found out that cause is a call
to tcsetattr() by to_erl, immediately preceeded by some printf().
The UART in our device doesn't like hardware parameters to be changed
while output is concurrently active. In fact, the GNU libc manual also
mentions that it might be dangerous to change UART hardware parameters
when a transmission is ongoing.
The patch attached to this e-mail changes the behaviour of to_erl to use
TCSADRAIN instead of TCSANOW when changing terminal parameters. This
makes the serial driver wait for the output queues to be empty before
applying the terminal parameter change.
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Like in epmd and erlexec. Otherwise "run_erl" fails on some platforms
when called with the "-daemon" option, printing this error:
"Cannot dup"
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* maint:
erts: Add the +sfwi system flag
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+sfwi Interval
Set scheduler forced wakeup interval. All run queues will be scanned
each Interval milliseconds. While there are sleeping schedulers in
the system, one scheduler will be woken for each non-empty run queue
found. An Interval of zero disables this feature, which also is the
default.
This feature has been introduced as a temporary workaround for lengthy
executing native code, and native code that do not bump reductions
properly in OTP. When these bugs have be fixed the +sfwi flag will
be removed.
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* dgud/win32_unicode:
erts: Windows, convert erlsrv to use widestring
erts: Window start_erl now uses widechars/unicode
Quote windows paths with spaces
Handle space in paths in test Makefiles
erts: Fix windows widestring args and paths in tools
erts: Windows, use widechars for all paths during startup
OTP-11135
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* rickard-sverker/carrier-migration/OTP-10279:
erts: Document the +M<S>acul command line argument
erts: Carrier pool information in allocator information
erts: Use carrier pool for migration of carriers
erts: Implement test case for carrier pool
erts: Implement carrier pool
erts: Fix type errors in info functions
erts: Use Uint64 for call counts
erts: Fix failing testcase alloc_SUITE:rbtree
erts: Rename allocator aoffcbf to aoffcaobf
erts: Remove unnecessary flag arguments in allocators
erts: Remove SBMBC allocator
erts: Add test for add_mbc and remove_mbc callbacks
erts: Fix deallocation in removed carrier
erts: Change naive list to rb-tree of carriers in AOFF allocator
erts: Prepare aoff allocator for carrier migration
erts: Make carrier header sizes customizable
erts: Add "bestfit within carrier" for aoff allocator (aoffcbf)
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These commands invoke gdb directly instead of going through emacs
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