Why is ubuntu server 12.04 crashing?

Question

System administration

Hello! Help me figure out why the server crashes every two or three days, the ubuntu 12.04 system is used as hosting. Fell around 17:17 on December 9, i.e. today.
Logs:
syslog - https://yadi.sk/d/I9t30KeIm7Hca
kernlog - https://yadi.sk/d/hootlBwtm7Hch
And don't really like a few lines
Dec 7 16:25:36 d62 kernel: [ 167.951111] perf samples too long (2501 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
Dec 7 16:28:05 d62 kernel: [ 316.671924] perf samples too long (5012 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
How bad is that? And I understand it is necessary to set the parameters 2501 and 5012? Thank you.

Answer 1

Colleague is a host machine? Then check the screw just in case. Usually this happens in the logs when he kicks his legs and he is looking for soil. Or feel the wires, maybe overgrown with moss.