Hi zbs888
Add the boot code syslog to your boot loader.
When the system faults, grab a copy of /var/log/messages and
attach it to your next post. Maybe it will contain something interesting.
cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz64 panic=3 console=ttyS1,115200 console=ttyS0,115200 syslog processor.max_cstate=0 nohz=off intel_idle.max_cstate=0 idle=halt idle=nomwait selinux=0
tail kernel.log
Apr 24 10:47:09 localhost kernel: igb 0000:03:00.0 eth2: igb: eth2 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX
Apr 24 10:47:10 localhost kernel: IPv6: ADDRCONF(NETDEV_CHANGE): eth2: link becomes ready
Apr 24 10:47:14 localhost kernel: ip_local_port_range: prefer different parity for start/end values.
Apr 24 10:47:17 localhost kernel: igb 0000:03:00.0 eth2: igb: eth2 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX
Apr 24 10:48:05 localhost kernel: floppy0: no floppy controllers found
Apr 24 11:23:25 localhost kernel: igb 0000:03:00.0 eth2: igb: eth2 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX
Apr 24 11:25:20 localhost kernel: TCP: request_sock_TCP: Possible SYN flooding on port 53. Sending cookies. Check SNMP counters.
Apr 24 11:44:53 localhost kernel: TCP: request_sock_TCP: Possible SYN flooding on port 53. Sending cookies. Check SNMP counters.
Apr 24 12:43:48 localhost kernel: TCP: request_sock_TCP: Possible SYN flooding on port 53. Sending cookies. Check SNMP counters.
Apr 24 13:50:22 localhost kernel: TCP: request_sock_TCP: Possible SYN flooding on port 53. Sending cookies. Check SNMP counters.
I added syslog in grub.conf,when the system faults ,/var/log/message and kernel.log,show nothing.
And i want to lock cpu freq,so i edit my grub.conf " processor.max_cstate=0 nohz=off intel_idle.max_cstate=0 idle=halt idle=nomwait" and reboot,but it's look not work,why?
# cat /proc/cpuinfo | grep 'cpu M'
cpu MHz : 968.333
cpu MHz : 974.472
cpu MHz : 961.290
cpu MHz : 949.197
cpu MHz : 955.121
cpu MHz : 959.014
cpu MHz : 963.917
cpu MHz : 940.815
# cat /proc/cpuinfo | grep 'cpu M'
cpu MHz : 1073.077
cpu MHz : 1087.866
cpu MHz : 1061.614
cpu MHz : 1079.117
cpu MHz : 1069.619
cpu MHz : 1057.048
cpu MHz : 1095.803
cpu MHz : 1074.776
# cat /proc/cpuinfo | grep 'cpu M'
cpu MHz : 1040.258
cpu MHz : 1062.527
cpu MHz : 1022.373
cpu MHz : 998.141
cpu MHz : 977.028
cpu MHz : 1057.740
cpu MHz : 1035.175
cpu MHz : 1020.519
# cat /sys/devices/system/cpu/cpuidle/current_driver
none
cat /sys/module/intel_idle/parameters/max_cstate
0
Still wating for resolve the question