but 256 run queue size, it's length is 256*8 2048byte, some cpu cache line is 32, 64, 128, 256, if run queue length is 128, half of queue size if 64*8 512byte, they can't be in the same cache line.
在 2020年1月27日星期一 UTC+8下午12:50:32，changkun写道： > > 256 run queue size is designed for the work-steal scheduler to prevent > false sharing. > > 128 run queue size exactly fits one cache line. Since the run queue can be > stolen half of the run queue from the tail by other Ps, 256 run queue size > prevents false sharing when the work-steal happens on different cores. > > On Sunday, January 26, 2020 at 6:31:27 PM UTC+8, jin wang wrote: >> >> why p's local run queue size is 256, not 128 or 512? >> > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/f65f8ad6-38e4-441a-a1db-78b2a40cdcdc%40googlegroups.com.
