LFS 201 - vmstat - Memory Monitoring and Usage

saintex

hello,
I came back after a period busy for work and later on after some weeks on vacatiion.

Just re-begun to study.

If delay is given in seconds, the report is repeated at that interval count times; if count is not given, vmstat will keep reporting statistics forever, until it is killed by a signal, such as Ctrl-C.

That's not true. I checked on both Debian and Centos: vmstat print just one line.

serewicz

Hello,

The operative part of the sentence is "If delay is given in seconds" If you don't give the delay, then it prints once. If you do give a delay it prints for that duration forever, unless a count is also given.

$ vmstat -h
Usage:
vmstat [options] [delay [count]]
$ vmstat 5
procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----
r b swpd free buff cache si so bi bo in cs us sy id wa st
0 0 0 26034960 65820 2452412 0 0 25 11 85 209 6 2 92
0 0 0 26016564 65820 2458972 0 0 0 0 4645 6950 1 0 99 0 0
2 0 0 26005168 65820 2459484 0 0 0 88 5086 8673 1 0 98 0 0

And on and on.

Regards,

saintex

ok,
thank you for the clarification!

Have a nice day!

serewicz

Great!

You too.