top - 21:51:47 up 68 days, 8:21, 1 user, load average: 1.19, 1.40, 1.41
Threads: 1220 total, 2 running, 1217 sleeping, 0 stopped, 1 zombie
%Cpu(s): 1.7 us, 0.2 sy, 0.0 ni, 98.1 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 19785972+total, 2179340 free, 17681568+used, 18864712 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 20492928 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND P
106202 root 20 0 1290492 10908 9692 R 99.9 0.0 98408:25 spoold-slave-1 1
#ps aux | grep spoold
root 20499 100 0.0 1282372 4608 ? Ssl 20:55 58:02 /opt/spool/sbin/spoold -d -f /opt/spool/etc/spoold.conf -- -c 0x3 -m 1000 -n 4 --max-scan-mem 4096 --hot-upgrade
#taskset -p 20499
pid 20499's current affinity mask: 1
直接原因是spoold 调用 pthread_setaffinity_np( ) 失败