About / proc / uptime meaning two parameters represented in this file:
[root@app ~]#cat /proc/uptime 3387048.81 3310821.00
The first parameter is representative of the system from the start to the current time (in seconds):
3,387,048.81 seconds = 39.20195381944444 days, indicating that the server has continuous power 39.20195381944444 days the second parameter is representative of system idle time (in seconds ): 3,310,821.00 seconds = 38.3196875 days, indicating that the power from the machine to a total of only about 38 days now nothing to do. Calculate the idle rate: 3,310,821.00 / 3,387,048.81 = 0.9774943278718207 In other words: it's idle rate is 97% idle rate level does not mean that it's a lot of work to do, there is a great relationship with the configuration and performance of the server, which servers have such a low idle rate, or that such a high utilization rate, because of its configuration is relatively low. Free rate of configuring the server with a great relationship, the better the performance of the server, the higher the configuration, the faster speed it handles, high configuration server processing time is less than a lower configuration server. From the free time, you can determine whether your server load is too large, is not a guide to look at often happens, if the idle time is small, that your server is already running at full capacity, and then decide whether you need to upgrade server.