Performance monitoring

I came across collectd, a performance monitoring tool (by way of the High Scalability blog. It looks pretty interesting and it looks like it collects quite a range of information.

In the past I have used atop a lot to track down performance issues.

Atop covers a lot of stats, but collectd adds temperature and network latency information to what atop collects.

Atop does have a neat feature which allows you to log the stats to a file and replay it at a later date to track down down issues which crop up at 3:00am.

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