4 ms·
That sounds like something to do with CPU scheduling than actual fractional cores.
by ChocolateGod 1y ago
That sounds like something to do with CPU scheduling than actual fractional cores.
- hinkley 1y agoIt does but the example here is figuring out how many workers to spool up for a given machine, and there are many ratios where getting 1 vs .75 would change the correct number. However it’s much worse than that. There’s a bug in libuv that I think is fixed on master but may not have shipped yet, where they fall back to the cgroup cpuset if the returned value is less than 1 (presumably they meant != 0). So if you’re running on a docker or kubernetes host with 8 cores and you try to give one container half a CPU, it will believe it has access to 8, not 0.5 CPUs. And now you’re task switching constantly.