Re: kswapd0: page allocation failure: order:0, mode:0x820(GFP_ATOMIC), nodemask=(null),cpuset=/,mems_allowed=0 (Kernel v6.5.9, 32bit ppc)

Erhard Furtner
2024-06-04T21:10:37Z

On Tue, 4 Jun 2024 11:01:39 -0700
Yosry Ahmed <yosryahmed@google.com> wrote:

> How many CPUs does this machine have? I am wondering if 32 can be an
> overkill for small machines, perhaps the number of pools should be
> max(nr_cpus, 32)?

This PowerMac G4 DP got 2 CPUs. Not much for a desktop machine by todays standards but some SoCs have less. ;)

# lscpu
Architecture: ppc
CPU op-mode(s): 32-bit
Byte Order: Big Endian
CPU(s): 2
On-line CPU(s) list: 0,1
Model name: 7455, altivec supported
Model: 3.3 (pvr 8001 0303)
Thread(s) per core: 1
Core(s) per socket: 1
Socket(s): 2
BogoMIPS: 83.78
Caches (sum of all):
L1d: 64 KiB (2 instances)
L1i: 64 KiB (2 instances)
L2: 512 KiB (2 instances)
L3: 4 MiB (2 instances)

Regards,
Erhard