On Fri, Jun 26, 2020 at 07:26:16PM +0100, Pádraig Brady wrote: > On 25/06/2020 18:37, Adam Borowski wrote: > > Hi! > > I'm afraid that `nproc` shows only the number of _currently_ online CPUs, > > which on mobile processors tends to be 1 when starting a job. As there's > > a need to conserve power, holding cores online when they have nothing to > > do would be a waste, thus they constantly get onlined and offlined.
> > Ie, could you please make nproc include all available CPUs rather than > > only online ones? > > Does `nproc --all` suffice for your use case? It works on the mobile box, but doesn't obey affinity mask anymore: [~]$ numactl -N 0 nproc --all 64 [~]$ numactl -N 0 nproc 16 I'd wish for fitting all uses, big and small. Ie, the answer "on this machine, with currently imposed limits, what's the fastest level of parallelism?". Meow. -- ⢀⣴⠾⠻⢶⣦⠀ ⣾⠁⢠⠒⠀⣿⡁ in the beginning was the boot and root floppies and they were good. ⢿⡄⠘⠷⠚⠋⠀ -- <willmore> on #linux-sunxi ⠈⠳⣄⠀⠀⠀⠀
