How to check cpu history
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My server recently had a problem causing it to stop working. So how can I check what application cpu is serving at that time? My server is running a web application and cronjob. Thanks
There's no historical record of resource usage on Linux without you setting it up beforehand.
atop or collectd are able to record resource usage on a per-process basis.
Monitoring solutions like monit or Nagios/Icinga can be set up to record process names as well.