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sar: add page #1532

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merged 5 commits into from
Oct 11, 2017
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sar: add page #1532

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dac2165
sar: add page (#1529)
mfrw Oct 7, 2017
63a52ca
sar: rewrite descriptions to be more clear
mfrw Oct 10, 2017
33bbefc
sar: correct typo for sar -B
mfrw Oct 10, 2017
45fe73e
sar: remove crtl+c after first time
mfrw Oct 11, 2017
c743a1c
sar: write coherent descriptions
mfrw Oct 11, 2017
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27 changes: 27 additions & 0 deletions pages/linux/sar.md
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# sar

> Monitor performance of various Linux subsystems.

- Report I/O and Transfer rate every 1 second:
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Don't think Transfer needs to have a capital letter at the beginning.

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sure, acutally the manpage had I/O and Transfer in upper-case, so i did the same.
anyways changed

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What transfer rate are we talking about ?

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physical devices, added to the description


`sar -b 1`
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There aren't any long forms of the options?

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unfortunately not :(

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Please wrap 1 in tokens.

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sorry for missing it ...
fixed


- Report 10 network statistics every 2 seconds for network devices:

`sar -n DEV 2 10`

- Report CPU utilization every 2 seconds:

`sar -u ALL 2`

- Report 20 memory utilization statistics every 1 second:
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This feels a bit awkward. Perhaps we could reword this to something like ...statistics, one per second?

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done..

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Should it be "once per second" ? I think that sounds better and more natural.

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On further thought, I think it should be changed to "once every second". Because the other examples are of the form "every 2 seconds", "every 5 seconds" and then you have "one per second", "one per 2 seconds".

Either we use "per second" everywhere or "every second" everywhere. But mixing the 2 does not sound right to me.


`sar -r 1 20`

- Report queue length and load averages:

`sar -q 1 1`

- Report paging statistics every 1 second:
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Perhaps we could change this example to every 5 seconds to change things up? 😺

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done


`sar -B 1`