Linux内核的死锁检测
内核文档比较详细
https://www.kernel.org/doc/html/latest/admin-guide/lockup-watchdogs.html
nmi watchdog
[root@localhost ~]# cat /proc/sys/kernel/nmi_watchdog
1
[root@localhost ~]# cat /proc/sys/kernel/softlockup_panic
0
[root@localhost ~]# cat /proc/sys/kernel/hardlockup_panic
1
[root@localhost ~]# cat /proc/sys/kernel/watchdog_thresh
10
出现死锁系统没有响应的时候，softlockup默认不会重启， hardlockup会重启