Centos server 4/8 g, system CPU load is always intermittent running high, every two hours or so, a minute to load load, there will be a peak time for up to 5 minutes, one minute of load value can reach 20 or so, I was grabbing process with SAR and took some log tool, but it appears that there is no exception to during peak, nor run higher process, baidu has a lot of data, most also be run Gao Jincheng, but I didn't find it, so ask the great spirit in this case trying to identify what is thinking? Wait a moment relevant log file upload,