https://lifehacker.com/the-raspberry-pi-4s-most-interesting-quirks-1835871780
Bob - wd6dod
On 6/27/2019 8:25 AM, Leon Shaner wrote:
Well, does it?
Pi's are power managed in that they draw what they need based on what
they're doing.
Sure, the Pi 4 is capable of drawing more, but will it do so for the
workload needs of WeeWx and related SW?
For one thing the Pi 4's new SoC is on paper 2-3x as efficient as a Pi
3, so things may either run ~2x as fast or waste fewer cycles getting
the job done.
Only way to know is to run exact same OS version and software stack on
two different units side-by-side, and measure how many watts they're
actually pulling nominally and during peak times and actually compare
the two. YMMV. =D
I'm holding out for the 4 GB Pi 4, which is out of stock already,
where I live.
Not needed for WeeWx, but as my main development platform, while a
slower Pi Zero runs the code developed and unit tested on the Pi 4.
I sure do like having a faster box so compile times are faster. =D
And to that end, eventually there will be a 64-bit Raspbian on the
official support train, in which case the additional memory will get
me past some hurdles where the 2 GB virtual memory per process
currently has me shutting off SW features that gcc/ gplusplus can't
manage to build with only 2 GB VM.
But I digress. ;-)
Regards,
\Leon
--
Leon Shaner :: Dearborn, Michigan (iPad)
On Jun 27, 2019, at 11:05 AM, Robert Lorenzini <b...@llorenzini.com>
wrote:
Be aware that the 4 draws more power and runs hotter.
Bob - wd6dod
On 6/27/2019 8:02 AM, vince wrote:
Anybody have a raspi4 yet ? I'm curious what the time to process
skins is on this one vs. a pi3b+ since the new one is reportedly
much faster in general.
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