Uptime command detailed--linux performance analysis __linux

Basic use:

Uptime [-V]

Actual analysis:

Because the command is simpler here, we do not introduce it in detail. But the simpler the command, the more convenient. Like before Baidu interview operation Dimension, Interview Tube asked me which command can see the system load. I immediately naturally reacted to the uptime to say, added a lot of points. Of course, look at the system load, is not only uptime. There are vmstat, SAR, such as CPU Analysis command, appropriate to add. We'll see what this command can do:

is not simply poor, I was still considering whether it is really necessary for it to write an independent blog so exaggerated (hehe). Starting from the left,

08:20:56 boot time

Up min, boot up 22min.

2 users 2 customers are using

Load average:0.63,1.02,0.81 This is the average load in 1 minutes, 5 minutes, and 15 minutes.

         Note: The general load average three values can not be greater than the number of CPUs, if the long-term greater than the number of CPUs indicates that the system is very busy load. Occasionally larger than words, generally do not affect the actual performance. If less than that is more idle.