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authorRickard Green <rickard@erlang.org>2010-06-03 12:43:57 +0000
committerErlang/OTP <otp@erlang.org>2010-06-03 12:43:57 +0000
commit97fa9fe68af5990a8ef7a71ccb7fc235d20a2c04 (patch)
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OTP-8666 Enable automatic binding of schedulers when possible
The runtime system will by default bind schedulers to logical processors using the default_bind bind type if the amount of schedulers are at least equal to the amount of logical processors configured, binding of schedulers is supported, and a CPU topology is available at startup. NOTE: 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. If this is the case you, are are advised to unbind the schedulers using the <seealso marker="erl#+sbt">+sbtu</seealso> command line argument, or by invoking <seealso marker="erlang#system_flag_scheduler_bind_type">erlang:system_flag(schedule r_bind_type, unbound)</seealso>.
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