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Jumping around in a compressed file is nowhere near as cheap as
for uncompressed files, as it requires reading and decompressing
up until the desired position. Using read_ahead will improve
performance slightly.
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This reverts commit 0118046f9bda8dcf3594184fa439b79267db8017.
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* hasse/stdlib/restore_string_SUITE_timeout:
stdlib: Restore timeout in string_SUITE:meas()
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* bjorn/hipe-compilation/OTP-15596:
HiPE: Don't fail the compilation for unimplemented instructions
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Make sure the test case meas() terminates without failing.
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Array fixup
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* hasse/stdlib/optimize_string/OTP-15649:
stdlib: Optimize handling of Unicode in the string module
stdlib: Optimize handling of Unicode in the string module
stdlib: Fix a bug in string:lexemes()
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Unroll some of the functions returning codepoints and grapheme clusters.
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The unicode_util:cp() function handles deep lists faster by returning
the rest of the input more balanced to the right than before.
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* Refactor the code to make it easier to configure the benchmark
* Add a test case for long benchmark runs. The new test case is run by
the OTP-team's benchmark infrastructure and can help in keeping
track of how the performance of ETS is affected by code changes.
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Allow list of chunks to be given to strip*()
OTP-15680
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* sverker/ets-select-fixation-owner-change-bug/OTP-15672:
erts: Fix ets:select table fixation leak at owner change
erts: Refactor common things into traverse_context_t
stdlib: Clarify docs for ets:info(_, safe_fixed)
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* maint:
Updated OTP version
Prepare release
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Symtom:
ETS table remains fixed after finished ets:select* call.
Problem:
The decision to unfix table after a yielding ets:select*
is based on table ownership, but ownership might have changed
while ets:select* was yielding.
Solution:
Remember and pass along whether table was fixed
when the traversal started.
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It's about the *last* time the table went from unfixed to fixed,
not the first time it ever did.
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This allows extra chunks to be preserved for languages such as Elixir
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into sverker/master/ets-no-mbuf-trapping/OTP-15660
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into sverker/maint/ets-no-mbuf-trapping/OTP-15660
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Many heap fragments do no longer make the GC slow.
Even worse, we are not guaranteed that a yield will provoke a GC
removing the fragments, which might lead to a one-yield-per-bucket
scenario if the heap fragment(s) still remains after each yield.
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* maint:
stdlib: Correct and optimize pretty printing of strings
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Avoid traversing all of the list/string when only part of it will be
used. An explicit check that the list is flat is needed since
string:slice() accepts deep lists and more.
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* maint:
stdlib: Optimize calendar:system_time_to_rfc3339()
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* hasse/stdlib/optimize_calendar_rfc3339/OTP-15630:
stdlib: Optimize calendar:system_time_to_rfc3339()
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The stronger compiler optimizations made the test case fail.
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5239eb0c62a9 removed some optimizations in `sys_core_fold`, and
because of that two warnings are no longer emitted.
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This reverts commit df130102cdeca8d35fec95a0c926fd1cfec54eab.
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OTP-15633
* siri/rsh-ssh/PR-1787:
Fix some missed comments about rsh
Document the restrictions on the -rsh command
Use ssh as the default remote shell
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* solvip/stdlib/gen_statem/export-start-types:
Fix links within gen_statem doc
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* solvip/stdlib/gen_statem/export-start-types:
Create a gen_statem type for enter_loop options
gen_statem exports types related to starting & naming
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* maint:
Clarify the atomic guarantees for ets:update_counter()
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The phrasing "no process can access the ETS table in the middle of the
operation" implies that the entire table is looked during
the operation, which is not true if `write_concurrency`
is enabled.
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* maint:
stdlib: Fix a bug in the Erlang Pretty Printer
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Not using io_lib for formatting makes the conversion several times
faster.
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