Swapping and Paging

Kernel Craft

Swapping occurs when an entire process gets transferred to disk from physical memory or is read back into physical memory from the disk

[root@nagios ~]# vmstat -s -S M | grep M
         1740 M total memory
         1723 M used memory
         1411 M active memory
           91 M inactive memory
           16 M free memory
           36 M buffer memory
          142 M swap cache
         1895 M total swap
            5 M used swap
         1890 M free swap

Paging occurs when part of a process gets transferred to disk from physical memory or is read back into physical memory from disk.

[root@domU-12-31-39-01-C1-54:~] getconf PAGESIZE
4096

For more info, you can check out the URL @ what-is-difference-between-swapping-and.html

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