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checking that all cpus are being used in my installation....

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​Dear Folks,

I am running Debian stretch on a pc with an AMD FX 8350 chip and a
sabertooth FX 990 motherboard.

I am interested to check a few things are working as they would be expected
to here.

I ran cat /proc/cpuinfo

and got

processor : 7
vendor_id : AuthenticAMD
cpu family : 21
model : 2
model name : AMD FX(tm)-8350 Eight-Core Processor
stepping : 0
microcode : 0x600084f
cpu MHz : 4013.300
cache size : 2048 KB
physical id : 0
siblings : 8
core id : 3
cpu cores : 4
apicid : 23
initial apicid : 7
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat
pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb
rdtscp lm constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf
eagerfpu pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes
xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a
misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr
tbm topoext perfctr_core perfctr_nb cpb hw_pstate vmmcall bmi1 arat npt
lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists
pausefilter pfthreshold
bugs : fxsave_leak sysret_ss_attrs null_seg
bogomips : 8026.82
TLB size : 1536 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate cpb eff_freq_ro


​Does this seem reasonable?

Should the number of cpu cores be 8 rather than 4 (listed above)?

If you look at the discussion below:

https://ubuntuforums.org/showthread.php?t=2233301

Only one cpu was working out of all 8 for the original poster until they
turned the ACPI setting to ACPI=force apparently.

I suppose I could check the grub.cfg file in /boot or wherever it lives and
see what the ACPI setting is in my case.

In gentoo you set makeopts to -j9 and make =-j9 when you compile a fresh
kernel and then it should run quickly and as long as your power supply unit
is in good shape then things should go smoothly....

In Debian I think there is something called makeflags but I am not sure
(comments appreciated here).

I am using kernel 4.8.2 I think.

I could download e.g. kernel 4.9.0 and then manually compile it using eg
make menuconfig and the existing .config file.

If I did that would it be make -j9 by default in debian or do I need to
specify that in the same way as you would in gentoo?

Also it should then compile pretty swiftly and smoothly (provided the power
supply is a good one) should it not?

Suggestions on performance testing the FX 8350 chip on this install are
welcome.

Regards

Michael Fothergill

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Thread

checking that all cpus are being used in my installation.... Michael Fothergill <michael.fothergill@googlemail.com> - 2016-12-23 21:50 +0100
  Re: checking that all cpus are being used in my installation.... Ben Caradoc-Davies <ben@transient.nz> - 2016-12-24 01:20 +0100
    Re: checking that all cpus are being used in my installation.... Michael Fothergill <michael.fothergill@googlemail.com> - 2016-12-24 13:30 +0100
  Re: checking that all cpus are being used in my installation.... Dan Ritter <dsr@randomstring.org> - 2016-12-24 12:40 +0100

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