[kswapd0] process made CPU Spikes &... Hung
Exadata database server used SWAP, and [kswapd0] process made CPU Spikes &... Hung
I use Exadata X2-2 and today .... system hung... everything in OS (Exadata Database Machine) not response around 5 minutes.
After I investigated I find [kswapd0] process made CPU Spikes before system not response.
# uname -r
2.6.18-194.3.1.0.3.el5
In OSwatch TOP:
top - 08:44:50 up 115 days, 16:15, 5 users, load average: 7.75, 2.37, 1.39
Tasks: 873 total, 35 running, 837 sleeping, 0 stopped, 1 zombie
Cpu(s): 2.2%us, 93.2%sy, 0.0%ni, 4.1%id, 0.4%wa, 0.0%hi, 0.1%si, 0.0%st
Mem: 98848968k total, 98398828k used, 450140k free, 740k buffers
Swap: 25165816k total, 783348k used, 24382468k free, 60858020k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
I use Exadata X2-2 and today .... system hung... everything in OS (Exadata Database Machine) not response around 5 minutes.
After I investigated I find [kswapd0] process made CPU Spikes before system not response.
# uname -r
2.6.18-194.3.1.0.3.el5
In OSwatch TOP:
top - 08:44:50 up 115 days, 16:15, 5 users, load average: 7.75, 2.37, 1.39
Tasks: 873 total, 35 running, 837 sleeping, 0 stopped, 1 zombie
Cpu(s): 2.2%us, 93.2%sy, 0.0%ni, 4.1%id, 0.4%wa, 0.0%hi, 0.1%si, 0.0%st
Mem: 98848968k total, 98398828k used, 450140k free, 740k buffers
Swap: 25165816k total, 783348k used, 24382468k free, 60858020k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
0