| created | 2024-02-19T09:03:53Z |
|---|---|
| begin | 2024-02-12T21:37:25Z |
| end | 2024-02-12T22:07:33Z |
| path | src/sys |
| commits | 1 |
| date | 2024-02-12T22:07:33Z | |||
|---|---|---|---|---|
| author | cheloha | |||
| files | src/sys/kern/kern_clock.c | log | diff | annotate |
| src/sys/kern/kern_clockintr.c | log | diff | annotate | |
| message |
kernel: disable hardclock() on secondary CPUs There is no useful work left for secondary CPUs to do in hardclock(). Disable cq_hardclock on secondary CPUs and remove the now-unnecessary early-return from hardclock(). This change reduces every system's normal clock interrupt rate by (HZ - HZ/10) per secondary CPU. For example, an 8-core machine with a HZ=100 kernel should see its clock interrupt rate drop from ~1600 to ~960. Thread: https://marc.info/?l=openbsd-tech&m=170750140915898&w=2 ok kettenis@ |
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