[ale] top and SWAP

[Jeff Hubbs]

Xosview appears to have a "page" bar with separate colors for in and out.


John Wells wrote:
> ----- "Jeff Hubbs" <hbbs at comcast.net> wrote:
>   
>> Don't mischaracterize this as "heavy swapping."  Heavy swapping of the
>> sort you want to avoid refers to *swap I/O*; that's distinct from the
>> OS "parking" sections of RAM that it thinks it won't often need into your
>> swap partition(s), regardless of how big they are.
>>     
>
> Understood. So, given that, swap I/O would be a metric I suppose one would want to watch, and not necessarily swap usage, because as you say, if it's written to disk and never read back in, it wouldn't be a tax on performance.
>
> So how does one measure/monitor swap i/o?
>
> Thanks,
> John
>
>
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