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authorErlang/OTP <[email protected]>2013-09-16 20:11:53 +0200
committerErlang/OTP <[email protected]>2013-09-16 20:11:53 +0200
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</header>
<p>This document describes the changes made to the ERTS application.</p>
+<section><title>Erts 5.10.3</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p> The documentation of predefined types and built-in
+ types has been corrected. </p>
+ <p>
+ Own Id: OTP-11090</p>
+ </item>
+ <item>
+ <p>
+ Fix changing terminal parameters in to_erl</p>
+ <p>
+ Change 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. Thanks to
+ Stefan Zegenhagen.</p>
+ <p>
+ Own Id: OTP-11206</p>
+ </item>
+ <item>
+ <p>
+ The default value of {flush, boolean()} in erlang:halt/2
+ is documented to be 'true' if the status is an integer.
+ The implementation behaviour was reversed. The
+ Implementation is now corrected to adhere to the
+ documentation. Thanks to Jose Valim for reporting the
+ error.</p>
+ <p>
+ *** POTENTIAL INCOMPATIBILITY ***</p>
+ <p>
+ Own Id: OTP-11218</p>
+ </item>
+ <item>
+ <p>
+ Fix serious race bug in R16B01 that could cause PID
+ mix-ups when a lot of processes were spawned and
+ terminated in a very rapid pace on an SMP emulator with
+ at least two scheduler threads.</p>
+ <p>
+ Own Id: OTP-11225</p>
+ </item>
+ <item>
+ <p>
+ Validating a trace pattern with the option silent no
+ longer incorrectly enables/disables the silent option of
+ the calling process.</p>
+ <p>
+ Own Id: OTP-11232</p>
+ </item>
+ <item>
+ <p>
+ Fixed a bug where GCC 4.8 and later use a more aggressive
+ loop optimization algorithm that broke some previously
+ working code in the efile driver. Thanks to Tomas
+ Abrahamsson for reporting this issue.</p>
+ <p>
+ Own Id: OTP-11246</p>
+ </item>
+ <item>
+ <p>
+ Fixed bug when printing memory allocator acul option in
+ crash dump.</p>
+ <p>
+ Own Id: OTP-11264</p>
+ </item>
+ <item>
+ <p>
+ Opening a new compressed file on Windows could in rare
+ (random) cases result in {error,eisdir} or other error
+ codes although it should have succeeded. This is now
+ corrected.</p>
+ <p>
+ Own Id: OTP-11265</p>
+ </item>
+ <item>
+ <p>
+ Fixed a race condition when closing a trace port that
+ would cause the emulator to crash.</p>
+ <p>
+ Own Id: OTP-11290</p>
+ </item>
+ </list>
+ </section>
+
+
+ <section><title>Improvements and New Features</title>
+ <list>
+ <item>
+ <p>
+ There is a new somewhat experimental socket option
+ 'netns' that can set the network namespace for a socket
+ on Linux:es where it is supported. See the documentation.</p>
+ <p>
+ Own Id: OTP-11157</p>
+ </item>
+ <item>
+ <p>
+ New allocator strategy <c>aoffcbf</c> (address order
+ first fit carrier best fit). Supports carrier migration
+ but with better CPU performance than <c>aoffcaobf</c>.</p>
+ <p>
+ Own Id: OTP-11174</p>
+ </item>
+ <item>
+ <p>
+ Introduced functionality for inspection of system and
+ build configuration.</p>
+ <p>
+ Own Id: OTP-11196</p>
+ </item>
+ <item>
+ <p>
+ Fix matching of floating point middle-endian machines.
+ Thanks to Johannes Weissl.</p>
+ <p>
+ Own Id: OTP-11201</p>
+ </item>
+ <item>
+ <p>
+ Fix compile error on ARM and GCC versions greater than
+ 4.1.0. Thanks to Johannes Weissl.</p>
+ <p>
+ Own Id: OTP-11214</p>
+ </item>
+ <item>
+ <p>
+ run_erl: Redirect standard streams to /dev/null. Thanks
+ to Johannes Weissl.</p>
+ <p>
+ Own Id: OTP-11215</p>
+ </item>
+ <item>
+ <p>
+ Misc. corrections in documentation for erl_driver. Thanks
+ to Giacomo Olgeni.</p>
+ <p>
+ Own Id: OTP-11227</p>
+ </item>
+ <item>
+ <p>
+ Fix documentation regarding binary_part.</p>
+ <p>
+ Own Id: OTP-11239</p>
+ </item>
+ <item>
+ <p>
+ Make edlin understand a few important control keys.
+ Thanks to Stefan Zegenhagen.</p>
+ <p>
+ Own Id: OTP-11251</p>
+ </item>
+ <item>
+ <p>
+ Export type zlib:zstream/0. Thanks to Loic Hoguin.</p>
+ <p>
+ Own Id: OTP-11278</p>
+ </item>
+ <item>
+ <p>
+ Add erl option to set schedulers by percentages. </p>
+ <p>
+ 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.</p>
+ <p>
+ 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.</p>
+ <p>
+ Thanks to Steve Vinoski</p>
+ <p>
+ Own Id: OTP-11282</p>
+ </item>
+ <item>
+ <p>
+ Extend erl_driver interface with lock names</p>
+ <p>
+ Lock and thread names are already a feature in the driver
+ interface. This extension will let developers read these
+ names which eases debugging.</p>
+ <p>
+ Own Id: OTP-11303</p>
+ </item>
+ <item>
+ <p>
+ Fix incorrect values returned by integer_to_binary/2.
+ Thanks to Juan Jose Comellas.</p>
+ <p>
+ Own Id: OTP-11311</p>
+ </item>
+ <item>
+ <p>
+ Fix system_flag scheduling_statistics - disable . Thanks
+ to Steve Vinoski.</p>
+ <p>
+ Own Id: OTP-11317</p>
+ </item>
+ <item>
+ <p> The documentation of predefined types has been
+ corrected Thanks to Kostis Sagonas. </p>
+ <p>
+ Own Id: OTP-11321</p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Erts 5.10.2</title>
<section><title>Fixed Bugs and Malfunctions</title>