RPI3 swap experiments

Trev freebsd-arm at sentry.org
Sat Jun 30 00:00:15 UTC 2018

bob prohaska wrote on 30/06/2018 09:39:
>> (I get a similar warning for the RPi2B which has 2GB of swap, but uses
>> 1.4G+ peak during a -j4 buildworld and always completes successfully.)

> Are you sure the peak swap use is that high? Last time I ran -j4 buildworld
> on my 11-stable Pi2  the swapinfo line with the highest usage was
> /dev/da0b         2097152   322264  1774888    15%
> or 322 MB.
> The two needn't be the same, but I'd expect them to be closer than that.

1.424G to be precise. System was multi-user. I may have had X running 
too, not absolutely sure.

>> I'll reduce it to 2G and see what happens in 5 hours...

> In my notes I don't find an RPi3 test case for 2GB swap, only 1, 2.3 and 3.
> I _think_ 2 GB is enough, based on a ~1.4 GB peak, but apparently didn't test it.
> Apologies for the misinformation!

Not a problem.

> I'm very curious to see if it makes a difference. You've already
> surprised me once......8-)

We'll see :)

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