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path: root/erts/emulator/beam/erl_cpu_topology.c
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2013-01-25Update copyright yearsBjörn-Egil Dahlberg
2013-01-23Merge branch 'rickard/rg-default/OTP-10737'Rickard Green
* rickard/rg-default/OTP-10737: Raise default reader group limit to 64
2013-01-23Merge branch 'rickard/+stbt/OTP-10668'Rickard Green
* rickard/+stbt/OTP-10668: Add +stbt erl command line switch
2013-01-21Raise default reader group limit to 64Rickard Green
2013-01-08Add +stbt erl command line switchRickard Green
2012-05-08Silence warningsRickard Green
2012-04-27Optimize process state changesRickard Green
2011-12-01Remove common run-queue in SMP caseRickard Green
The common run-queue implementation is removed since it is unused, untested, undocumented, unsupported, and only complicates the code. A spinlock used by the run-queue management sometimes got heavily contended. This code has now been rewritten, and the spinlock has been removed.
2011-11-18Use unbound schedulers as defaultRickard Green
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.
2011-06-14Use new atomic API in runtime systemRickard Green
All uses of the old deprecated atomic API in the runtime system have been replaced with the use of the new atomic API. In a lot of places this change imply a relaxation of memory barriers used.
2011-02-25Allow bindtype unbound when no cpu topology is availableRickard Green
2010-12-16Use 32-bit atomics for misc scheduling specific informationRickard Green
2010-11-18Generalize reader groupsRickard Green
Reader groups have been generalized to cpu groups which can be used for implementing reader groups, but also for implementing other functionality in the future.
2010-11-18Move cpu topology functionality into erl_cpu_topology.[ch]Rickard Green