cpu性能分析工具
[root@k8s-master01 ~]# LANG=C #将时间从12小时制换成24小时
[root@k8s-master01 ~]# mpstat 1 3 #每一秒统计一次cpu状态，一共统计3次
Linux 3.10.0-1160.el7.x86_64 (k8s-master01) 09/01/21 _x86_64_ (4 CPU)
磁盘等待 消耗的cpu cpu空闲
22:58:43 CPU %usr %nice %sys %iowait %irq %soft %steal %guest %gnice %idle
22:58:44 all 1.78 0.00 1.27 0.00 0.00 0.00 0.00 0.00 0.00 96.95
22:58:45 all 3.29 0.00 1.52 0.51 0.00 0.25 0.00 0.00 0.00 94.43
22:58:46 all 3.05 0.00 1.53 0.00 0.00 0.25 0.00 0.00 0.00 95.17
Average: all 2.71 0.00 1.44 0.17 0.00 0.17 0.00 0.00 0.00 95.52
[root@k8s-master01 ~]# lscpu #查看cpu硬件信息 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: 2 Socket(s): 2 NUMA node(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 62 Model name: Intel(R) Xeon(R) CPU E5-2603 v2 @ 1.80GHz Stepping: 4 CPU MHz: 1800.000 BogoMIPS: 3600.00 Hypervisor vendor: VMware Virtualization type: full L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 10240K NUMA node0 CPU(s): 0-3 Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx rdtscp lm constant_tsc arch_perfmon nopl xtopology tsc_reliable nonstop_tsc eagerfpu pni pclmulqdq ssse3 cx16 pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm ssbd ibrs ibpb stibp fsgsbase tsc_adjust smep arat md_clear spec_ctrl intel_stibp flush_l1d arch_capabilities
[root@k8s-master01 ~]# free -m total used free shared buff/cache available Mem: 3770 1377 165 29 2227 2092 Swap: 0 0 0
显示内存所有信息
[root@k8s-master01 ~]# cat /proc/meminfo MemTotal: 3861288 kB MemFree: 168784 kB MemAvailable: 2142064 kB Buffers: 3136 kB Cached: 2132620 kB SwapCached: 0 kB Active: 2135336 kB Inactive: 1002164 kB Active(anon): 1014328 kB Inactive(anon): 18104 kB Active(file): 1121008 kB Inactive(file): 984060 kB Unevictable: 0 kB Mlocked: 0 kB SwapTotal: 0 kB SwapFree: 0 kB Dirty: 72 kB Writeback: 0 kB AnonPages: 1001744 kB Mapped: 285704 kB Shmem: 30688 kB Slab: 304484 kB SReclaimable: 145604 kB SUnreclaim: 158880 kB KernelStack: 12912 kB PageTables: 11008 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 1930644 kB Committed_AS: 5543572 kB VmallocTotal: 34359738367 kB VmallocUsed: 194108 kB VmallocChunk: 34359310332 kB Percpu: 38912 kB HardwareCorrupted: 0 kB AnonHugePages: 522240 kB CmaTotal: 0 kB CmaFree: 0 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB DirectMap4k: 192320 kB DirectMap2M: 4001792 kB
vmstat命令
[root@k8s-master01 ~]# vmstat -a 1 5 procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu----- r b swpd free inact active si so bi bo in cs us sy id wa st 1 0 0 170604 1002256 2133956 0 0 3 20 6 8 4 2 94 0 0 0 0 0 170672 1002292 2134580 0 0 0 50 4352 7870 3 2 93 1 0 0 0 0 170676 1002292 2134672 0 0 0 120 3310 5893 2 1 97 0 0 0 0 0 170676 1002292 2134696 0 0 0 41 3891 7101 2 2 96 0 0 0 0 0 170800 1002292 2134720 0 0 0 4 3295 6003 2 1 97 0 0
HDD磁盘调度算法
[root@k8s-master01 ~]# cat /sys/block/sda/queue/scheduler #查看 noop [deadline] cfq [root@k8s-master01 ~]# echo cfq > /sys/block/sda/queue/scheduler #修改为cfq [root@k8s-master01 ~]# cat /sys/block/sda/queue/scheduler noop deadline [cfq]