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Maximum CPU limit should be increased to 256 to accomodate high end servers
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Description

hello team,

I'm testing VyOS 1.2rc8 on a Dell R940 server:
4 sockets Intel (R) Xeon (R) Gold 5118 CPU @ 2.30GHz
1.5 Tb of memory
96 logical processors

VyOS has only recognized 64 cores,
to recognize the 96 or more cores the following
change is required in the kernel config:

-CONFIG_NR_CPUS=64
+CONFIG_NR_CPUS=256

Thank you!

Environment:

bash
$ nproc
64
bash
$ free -m
              total        used        free      shared  buff/cache   available
Mem:         128912         528      125086           1        3296      126972
Swap:             0           0           0
$ lscpu
Architecture:        x86_64
CPU op-mode(s):      32-bit, 64-bit
Byte Order:          Little Endian
Address sizes:       43 bits physical, 48 bits virtual
CPU(s):              96
On-line CPU(s) list: 0-95
Thread(s) per core:  2
Core(s) per socket:  12
Socket(s):           4
NUMA node(s):        8
Vendor ID:           GenuineIntel
CPU family:          6
Model:               85
Model name:          Intel(R) Xeon(R) Gold 5118 CPU @ 2.30GHz
Stepping:            4
CPU MHz:             2294.609
BogoMIPS:            4589.21
Virtualization:      VT-x
Hypervisor vendor:   VMware
Virtualization type: full
L1d cache:           32K
L1i cache:           32K
L2 cache:            1024K
L3 cache:            16896K
NUMA node0 CPU(s):   0-11
NUMA node1 CPU(s):   12-23
NUMA node2 CPU(s):   24-35
NUMA node3 CPU(s):   36-47
NUMA node4 CPU(s):   48-59
NUMA node5 CPU(s):   60-71
NUMA node6 CPU(s):   72-83
NUMA node7 CPU(s):   84-95
Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon nopl xtopology tsc_reliable nonstop_tsc cpuid pni pclmulqdq vmx ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch cpuid_fault invpcid_single pti ibrs ibpb stibp tpr_shadow vnmi ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 invpcid rtm mpx avx512f avx512dq rdseed adx smap clflushopt clwb avx512cd avx512bw avx512vl xsaveopt xsavec xsaves arat pku ospke arch_capabilities

Details

Difficulty level
Unknown (require assessment)
Version
1.2.0-rc8
Why the issue appeared?
Will be filled on close

Event Timeline

I always thought 64 cpus should be sufficient for VyOS :)

c-po changed Version from - to 1.2.0-rc8.
dmbaturin renamed this task from Dell R940 maximum cpu count limit to Maximum CPU limit should be increased to 256 to accomodate high end servers.Nov 28 2018, 11:31 PM

I hope 256 will be enough for everyone. ;)