From: Eric Wong <normalperson@...>
Date: 2018-07-30T22:46:13+00:00
Subject: [ruby-core:88219] Re: [Ruby trunk Misc#14937] [PATCH] thread_pthread: lazy-spawn timer-thread only on contention

> yet, sky3 had a failure at
> http://ci.rvm.jp/results/trunk-test@ruby-sky3/1173398 and it
> might be related.  Investigating...

I thought r64133 fixed it, but I still saw this failure:

  http://ci.rvm.jp/results/trunk@P895/1173951

I can't reproduce that regardless of multi or single-core
and I'm not sure what is wrong...  (Maybe I need food :x)

Also, vm_thread_condvar1 performance regressed (otherwise,
benchmark performance seems improved overall).  But I think
I need to redo sleep/wakeups again for auto-fiber
[Feature #13618] anyways...

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