Tuesday, October 24, 2017

Linux : CPU and Memory Info Commands

Sameera Nelson October 24, 2017 Linux

1. List CPU Core Level Information

cat /proc/cpuinfo

[sdn@devdummy ~]$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 58
model name : Intel(R) Core(TM) i7-3840QM CPU @ 2.80GHz
stepping : 9
microcode : 25
cpu MHz : 2793.763
cache size : 8192 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
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 rdtscp lm constant_tsc rep_good xtopology nonstop_tsc pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 popcnt aes xsave avx rdrand lahf_lm
bogomips : 5587.52
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 1
...

processor : 2
...

processor : 3
...

2. List CPU Hardware Details

lscpu

[sdn@devdummy ~]$ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Thread(s) per core: 1
Core(s) per socket: 4
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 58
Stepping: 9
CPU MHz: 2793.763
BogoMIPS: 5587.52
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 8192K
NUMA node0 CPU(s): 0-3

3. List Memory Infomation

cat /proc/meminfo

[sdn@devdummy ~]$ cat /proc/meminfo
MemTotal: 11279684 kB
MemFree: 677988 kB
Buffers: 775004 kB
Cached: 6188944 kB
SwapCached: 0 kB
Active: 5343628 kB
Inactive: 4398252 kB
Active(anon): 2469184 kB
Inactive(anon): 946236 kB
Active(file): 2874444 kB
Inactive(file): 3452016 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 2097148 kB
SwapFree: 2097148 kB
Dirty: 144 kB
Writeback: 0 kB
AnonPages: 2779796 kB
Mapped: 336600 kB
Shmem: 637484 kB
Slab: 686040 kB
SReclaimable: 636168 kB
SUnreclaim: 49872 kB
KernelStack: 12048 kB
PageTables: 55876 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 7736988 kB
Committed_AS: 6586624 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 167928 kB
VmallocChunk: 34359561208 kB
HardwareCorrupted: 0 kB
AnonHugePages: 1753088 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 9152 kB
DirectMap2M: 11646976 kB