debian系列与rhel系列有些地方差别还是挺大的，rhel里直接top，f，j，回车，即可看到所有进程所在的cpu id，ubuntu里找了找，也是可以做到的
当然如果不想用top来看，通过ps命令也是可以找的
lihui@2015-vm1:~$ pgrep mysql 2209 lihui@2015-vm1:~$ ps -eo pid,psr | grep 2209 2209 1
如果直接看top，可以进行如下操作
top
top - 23:01:35 up 1 min, 1 user, load average: 0.22, 0.10, 0.04
Tasks: 465 total, 2 running, 463 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.1 us, 0.2 sy, 0.0 ni, 99.7 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem: 3947716 total, 568272 used, 3379444 free, 37760 buffers
KiB Swap: 0 total, 0 used, 0 free. 232172 cached Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
283 root 39 19 0 0 0 S 0.7 0.0 0:00.06 khugepaged
318 root 20 0 0 0 0 S 0.3 0.0 0:00.32 kworker/1:1
477 root 20 0 0 0 0 S 0.3 0.0 0:00.12 kworker/u256:29
1280 root 10 -10 20940 420 48 S 0.3 0.0 0:00.11 monitor
1291 root 10 -10 169904 24356 6408 S 0.3 0.6 0:00.31 ovs-vswitchd
2327 rabbitmq 20 0 1638380 45132 4056 S 0.3 1.1 0:05.41 beam.smp
2844 lihui 20 0 23940 3192 2392 R 0.3 0.1 0:00.02 top
1 root 20 0 33792 4308 2632 S 0.0 0.1 0:03.03 init
2 root 20 0 0 0 0 S 0.0 0.0 0:00.07 kthreadd
3 root 20 0 0 0 0 S 0.0 0.0 0:00.08 ksoftirqd/0
4 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0
5 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0H
6 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kworker/u256:0
7 root 20 0 0 0 0 R 0.0 0.0 0:00.65 rcu_sched
f
* PID = Process Id CGROUPS = Control Groups * USER = Effective User Name SUPGIDS = Supp Groups IDs * PR = Priority SUPGRPS = Supp Groups Names * NI = Nice Value TGID = Thread Group Id * VIRT = Virtual Image (KiB) ENVIRON = Environment vars * RES = Resident Size (KiB) vMj = Major Faults delta * SHR = Shared Memory (KiB) vMn = Minor Faults delta * S = Process Status USED = Res+Swap Size (KiB) * %CPU = CPU Usage nsIPC = IPC namespace Inode * %MEM = Memory Usage (RES) nsMNT = MNT namespace Inode * TIME+ = CPU Time, hundredths nsNET = NET namespace Inode * COMMAND = Command Name/Line nsPID = PID namespace Inode PPID = Parent Process pid nsUSER = USER namespace Inode UID = Effective User Id nsUTS = UTS namespace Inode RUID = Real User Id RUSER = Real User Name SUID = Saved User Id SUSER = Saved User Name GID = Group Id GROUP = Group Name PGRP = Process Group Id TTY = Controlling Tty TPGID = Tty Process Grp Id SID = Session Id nTH = Number of Threads P = Last Used Cpu (SMP) TIME = CPU Time SWAP = Swapped Size (KiB) CODE = Code Size (KiB) DATA = Data+Stack (KiB) nMaj = Major Page Faults nMin = Minor Page Faults nDRT = Dirty Pages Count WCHAN = Sleeping in Function Flags = Task Flags <sched.h>
看到了P = Last Used Cpu (SMP) 这行，光标移到这里，然后回车或者d
* PID = Process Id CGROUPS = Control Groups * USER = Effective User Name SUPGIDS = Supp Groups IDs * PR = Priority SUPGRPS = Supp Groups Names * NI = Nice Value TGID = Thread Group Id * VIRT = Virtual Image (KiB) ENVIRON = Environment vars * RES = Resident Size (KiB) vMj = Major Faults delta * SHR = Shared Memory (KiB) vMn = Minor Faults delta * S = Process Status USED = Res+Swap Size (KiB) * %CPU = CPU Usage nsIPC = IPC namespace Inode * %MEM = Memory Usage (RES) nsMNT = MNT namespace Inode * TIME+ = CPU Time, hundredths nsNET = NET namespace Inode * COMMAND = Command Name/Line nsPID = PID namespace Inode PPID = Parent Process pid nsUSER = USER namespace Inode UID = Effective User Id nsUTS = UTS namespace Inode RUID = Real User Id RUSER = Real User Name SUID = Saved User Id SUSER = Saved User Name GID = Group Id GROUP = Group Name PGRP = Process Group Id TTY = Controlling Tty TPGID = Tty Process Grp Id SID = Session Id nTH = Number of Threads * P = Last Used Cpu (SMP) TIME = CPU Time SWAP = Swapped Size (KiB) CODE = Code Size (KiB) DATA = Data+Stack (KiB) nMaj = Major Page Faults nMin = Minor Page Faults nDRT = Dirty Pages Count WCHAN = Sleeping in Function Flags = Task Flags <sched.h>
q保存退出，就会在屏幕的最右边看到P那列的数字，就是cpu的core id
Tasks: 504 total, 2 running, 502 sleeping, 0 stopped, 0 zombie
%Cpu0 : 24.7 us, 8.4 sy, 0.0 ni, 66.9 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
%Cpu1 : 30.8 us, 10.8 sy, 0.0 ni, 58.4 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
%Cpu2 : 31.2 us, 8.5 sy, 0.0 ni, 60.3 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem: 3947716 total, 1973232 used, 1974484 free, 42020 buffers
KiB Swap: 0 total, 0 used, 0 free. 281624 cached Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND P
3527 root 20 0 227308 65716 8816 S 8.3 1.7 0:39.65 python 0
3520 root 20 0 114456 43288 7768 S 3.5 1.1 0:11.01 python 2
16836 root 20 0 42124 13780 6636 R 1.6 0.3 0:00.04 neutron-rootwra 2
9 root 20 0 0 0 0 S 1.2 0.0 0:02.82 rcuos/1 0
3505 root 20 0 118628 44096 9848 S 1.2 1.1 0:04.66 python 0
3511 root 20 0 166892 77848 10080 S 1.2 2.0 0:05.83 nova-api 0
3522 root 20 0 137232 52568 9820 S 1.2 1.3 0:04.97 python 0
7 root 20 0 0 0 0 S 0.8 0.0 0:03.75 rcu_sched 0
8 root 20 0 0 0 0 S 0.8 0.0 0:02.91 rcuos/0 1
10 root 20 0 0 0 0 S 0.8 0.0 0:03.16 rcuos/2 1
820 syslog 20 0 255848 4764 2484 S 0.8 0.1 0:01.65 rsyslogd 2
1281 root 10 -10 21424 4716 3800 S 0.8 0.1 0:01.48 ovsdb-server 2
2327 rabbitmq 20 0 1745196 111588 4056 S 0.8 2.8 0:15.25 beam.smp 0
3492 root 20 0 94456 29320 7280 S 0.8 0.7 0:04.32 python 0
265 root rt 0 0 0 0 S 0.4 0.0 0:00.15 migration/0 0
293 root 20 0 0 0 0 S 0.4 0.0 0:02.01 kworker/0:1 0
2209 mysql 20 0 1536300 83212 10792 S 0.4 2.1 0:05.28 mysqld 1
2963 root 20 0 0 0 0 S 0.4 0.0 0:00.48 kworker/1:0 1
3503 root 20 0 332276 46020 8504 S 0.4 1.2 0:02.59 python 2
3525 root 20 0 114212 42688 7616 S 0.4 1.1 0:01.58 python 2
3529 root 20 0 136948 39740 9848 S 0.4 1.0 0:00.85 nova-novncproxy 2
16491 lihui 20 0 23940 3300 2468 R 0.4 0.1 0:00.03 top 1
1 root 20 0 33792 4308 2632 S 0.0 0.1 0:03.12 init 1
2 root 20 0 0 0 0 S 0.0 0.0 0:00.07 kthreadd 2
3 root 20 0 0 0 0 S 0.0 0.0 0:00.11 ksoftirqd/0 0
5 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0H 0
11 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcuos/3 1
12 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcuos/4 0
13 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcuos/5 0
14 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcuos/6 0
15 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcuos/7 0
