Debian only sees one CPU core on a 2 core 4 thread machine
by lord_vaba from LinuxQuestions.org on (#6H8MF)
Hello,
I have a i5-3470T thin-client that should show 4 CPUs (2 cores 4 threads based on ARK). However it is only showing one. I use it headless to run docker with various home automation containers and it has been running OK, but I would like to push it further and would like it to use all of the CPU. I read on this and other forums that there is a BIOS option that may need checking, but when I looked I could not find it.
I would greatly appreciate any help/pointers in solving this.
Below is the nofetch and lscpu output for some system info.
Code: _,met$$$$$gg. vav@brick
,g$$$$$$$$$$$$$$$P. ---------
,g$$P" """Y$$.". OS: Debian GNU/Linux trixie/sid x86_64
,$$P' `$$$. Host: 3237D46 ThinkCentre M92P
',$$P ,ggs. `$$b: Kernel: 6.5.0-5-amd64
`d$$' ,$P"' . $$$ Uptime: 3 days, 22 hours, 9 mins
$$P d$' , $$P Packages: 1495 (dpkg), 6 (flatpak)
$$: $$. - ,d$$' Shell: bash 5.2.21
$$; Y$b._ _,d$P' Terminal: /dev/pts/0
Y$$. `.`"Y$$$$P"' CPU: Intel i5-3470T (1) @ 2.900GHz
`$$b "-.__ GPU: Intel HD Graphics
`Y$$ Memory: 1655MiB / 7747MiB
`Y$$.
`$$b.
`Y$$b.
`"Y$b._
`"""Code:Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 36 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 1
On-line CPU(s) list: 0
Vendor ID: GenuineIntel
Model name: Intel(R) Core(TM) i5-3470T CPU @ 2.90GHz
CPU family: 6
Model: 58
Thread(s) per core: 1
Core(s) per socket: 1
Socket(s): 1
Stepping: 9
CPU(s) scaling MHz: 84%
CPU max MHz: 2900.0000
CPU min MHz: 1600.0000
BogoMIPS: 5787.01
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht
tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon p
ebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfm
perf pni pclmulqdq dtes64 monitor ds_cpl smx est tm2 sss
e3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_d
eadline_timer aes xsave avx f16c rdrand lahf_lm cpuid_fa
ult epb pti fsgsbase smep erms xsaveopt dtherm arat pln
pts
Caches (sum of all):
L1d: 32 KiB (1 instance)
L1i: 32 KiB (1 instance)
L2: 256 KiB (1 instance)
L3: 3 MiB (1 instance)
NUMA:
NUMA node(s): 1
NUMA node0 CPU(s): 0
Vulnerabilities:
Gather data sampling: Not affected
Itlb multihit: KVM: Mitigation: VMX unsupported
L1tf: Mitigation; PTE Inversion
Mds: Vulnerable: Clear CPU buffers attempted, no microcode; S
MT disabled
Meltdown: Mitigation; PTI
Mmio stale data: Unknown: No mitigations
Retbleed: Not affected
Spec rstack overflow: Not affected
Spec store bypass: Vulnerable
Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer
sanitization
Spectre v2: Mitigation; Retpolines, STIBP disabled, RSB filling, PBR
SB-eIBRS Not affected
Srbds: Vulnerable: No microcode
Tsx async abort: Not affected
I have a i5-3470T thin-client that should show 4 CPUs (2 cores 4 threads based on ARK). However it is only showing one. I use it headless to run docker with various home automation containers and it has been running OK, but I would like to push it further and would like it to use all of the CPU. I read on this and other forums that there is a BIOS option that may need checking, but when I looked I could not find it.
I would greatly appreciate any help/pointers in solving this.
Below is the nofetch and lscpu output for some system info.
Code: _,met$$$$$gg. vav@brick
,g$$$$$$$$$$$$$$$P. ---------
,g$$P" """Y$$.". OS: Debian GNU/Linux trixie/sid x86_64
,$$P' `$$$. Host: 3237D46 ThinkCentre M92P
',$$P ,ggs. `$$b: Kernel: 6.5.0-5-amd64
`d$$' ,$P"' . $$$ Uptime: 3 days, 22 hours, 9 mins
$$P d$' , $$P Packages: 1495 (dpkg), 6 (flatpak)
$$: $$. - ,d$$' Shell: bash 5.2.21
$$; Y$b._ _,d$P' Terminal: /dev/pts/0
Y$$. `.`"Y$$$$P"' CPU: Intel i5-3470T (1) @ 2.900GHz
`$$b "-.__ GPU: Intel HD Graphics
`Y$$ Memory: 1655MiB / 7747MiB
`Y$$.
`$$b.
`Y$$b.
`"Y$b._
`"""Code:Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 36 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 1
On-line CPU(s) list: 0
Vendor ID: GenuineIntel
Model name: Intel(R) Core(TM) i5-3470T CPU @ 2.90GHz
CPU family: 6
Model: 58
Thread(s) per core: 1
Core(s) per socket: 1
Socket(s): 1
Stepping: 9
CPU(s) scaling MHz: 84%
CPU max MHz: 2900.0000
CPU min MHz: 1600.0000
BogoMIPS: 5787.01
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht
tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon p
ebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfm
perf pni pclmulqdq dtes64 monitor ds_cpl smx est tm2 sss
e3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_d
eadline_timer aes xsave avx f16c rdrand lahf_lm cpuid_fa
ult epb pti fsgsbase smep erms xsaveopt dtherm arat pln
pts
Caches (sum of all):
L1d: 32 KiB (1 instance)
L1i: 32 KiB (1 instance)
L2: 256 KiB (1 instance)
L3: 3 MiB (1 instance)
NUMA:
NUMA node(s): 1
NUMA node0 CPU(s): 0
Vulnerabilities:
Gather data sampling: Not affected
Itlb multihit: KVM: Mitigation: VMX unsupported
L1tf: Mitigation; PTE Inversion
Mds: Vulnerable: Clear CPU buffers attempted, no microcode; S
MT disabled
Meltdown: Mitigation; PTI
Mmio stale data: Unknown: No mitigations
Retbleed: Not affected
Spec rstack overflow: Not affected
Spec store bypass: Vulnerable
Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer
sanitization
Spectre v2: Mitigation; Retpolines, STIBP disabled, RSB filling, PBR
SB-eIBRS Not affected
Srbds: Vulnerable: No microcode
Tsx async abort: Not affected