9b90491e4a
Previously we did not steal timers from running P's, because that P should be responsible for running its own timers. However, if the P is running a CPU-bound G, this can cause measurable delays in running ready timers. Also, in CL 214185 we avoided taking the timer lock of a P with no ready timers, which reduces the chances of timer lock contention. So, if we can't find any ready timers on sleeping P's, try stealing them from running P's. Fixes #38860 Change-Id: I0bf1d5dc56258838bdacccbf89493524e23d7fed Reviewed-on: https://go-review.googlesource.com/c/go/+/232199 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com> Reviewed-by: Michael Knyszek <mknyszek@google.com> |
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