Erlang R14B 新增加参数 +swt 控制调度器的唤醒阀值
September 7th, 2010
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来自github上的otp源码提交消息:
Erlang R14B 新增加参数 +swt very_low|low|medium|high|very_high
Set scheduler wakeup threshold. Default is medium
The threshold determines when to wake up sleeping schedulers when more work than can be handled by currently awake schedulers exist. A low threshold will cause earlier wakeups, and a high threshold will cause later wakeups. Early wakeups will distribute work over multiple schedulers faster, but work will more easily bounce between schedulers.
这样减少无必要的进程调度,避免cache被污染!
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昨天9月15号, R14B正式发布。