
Chapter 8. Open system servers - Linux for xSeries 285
8.3.5 vmstat
vmstat provides information about processes, memory, paging, block I/O, traps, and CPU
activity. Example 8-12 shows a sample vmstat output.
Example 8-12 Output of vmstat
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
2 0 0 0 39256 19820 159460 0 0 200 100 133 141 31 5 64
The columns in the output are as follows:
procs
– r: The number of processes waiting for runtime.
– b: The number of processes in un-interruptible sleep.
– w: The number of processes swapped out but otherwise runnable. This field is
calculated, but Linux never desperation swaps. ...