Manually clean up the Linux cache and free up memory

Free-m This command everyone should be very familiar with 650) this.width=650; "Src=" http://s3.51cto.com/wyfs02/M00/71/05/ Wkiol1xehcoysuqsaad999129o4731.jpg "title=" http://lingjing.blog.51cto.com "alt=" Wkiol1xehcoysuqsaad999129o4731.jpg "/>

System real memory We need to look at the second line because some of the caches haven't been released yet.

How Linux memory can be used: Available memory =free+buffers+cached

To manually release the Linux cache:

1. Free-m

2. Sync (must be before the third part)

3. Echo 3>/proc/sys/vm/drop_caches

4. Fee-m

5. Echo 0>/proc/sys/vm/drop_caches

Manually clean up the Linux cache and free up memory