What about router/modem power draw? Needs to be some sort of connection to the internet to truly function as a website. (Not being connected would mean it's a wan site or intranet site)
How much load can be served from 1m² of sunlight
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Re: How much load can be served from 1m² of sunlight
#12What if you ditch the OS and code the server on the bare metal?
Re: How much load can be served from 1m² of sunlight
#13Obviously there is infinite room for optimization of this problem, but this was a fun blog post. I’m interested to see where the author goes with the series.
It is interesting concept for a blog post but ruined by very inefficient implementation. I would expect orders of magnitude more work done on ~20W. Also parsing a compressed 10MB JSON seems like an unusual request. It would maybe be more fun to put a Hello World or Pet Store and get some numbers that will be more relatable to a regular developer.
You must have a very low level of expectations of your fellow HN reader if you think that anything above a Hello World tutorial is relatable to a regular developer.
Re: How much load can be served from 1m² of sunlight
#14Earlier quoted context omitted.
It is interesting concept for a blog post but ruined by very inefficient implementation. I would expect orders of magnitude more work done on ~20W. Also parsing a compressed 10MB JSON seems like an unusual request. It would maybe be more fun to put a Hello World or Pet Store and get some numbers that will be more relatable to a regular developer.
You must have a very low level of expectations of your fellow HN reader if you think that anything above a Hello World tutorial is relatable to a regular developer.
How frequently do you test a new web framework with "10MB compressed JSONs"?
On the other hand you can find a lot of benchmarks that use basically Hello World just to test your request response or some rather small request/response sizes, because this is what most applications actually do. You can add a simple database query to it for more realistic load.
So, yes, this is more relatable to me as a backend developer because I can compare results more easily.
Re: How much load can be served from 1m² of sunlight
#15To see another attempt of serving a webpage off of solar power: take a look at https://solar.lowtechmagazine.com/about.html -- it has techniques I find pretty unique for conserving power. All the images are rasterized in order to reduce page size among other things.
Re: How much load can be served from 1m² of sunlight
#16> With an idle load, this particular laptop draws 14W of power with the screen turned off. That's an extremely high idle power usage, I also have a laptop with a Ryzen 9 4900HS (the ROG Zephyrus G14, the only laptop with this chip, to my knowledge), and it idles around 9-11W with the screen on . Most of that is actually because of the RTX 2060 that's bundled with it, and won't turn off in Linux because Nvidia doesn't…
You can use nvidia-prime to run on intel only right?
Re: How much load can be served from 1m² of sunlight
#17Rather than inverting 12V DC to 240V AC and back, you could skip a step and use a laptop car charger, converting 12V DC straight to ~20V DC.
Don't DC-DC transformers use AC internally?
Re: How much load can be served from 1m² of sunlight
#18Earlier quoted context omitted.
You must have a very low level of expectations of your fellow HN reader if you think that anything above a Hello World tutorial is relatable to a regular developer.
How frequently do you test a new web framework with "10MB compressed JSONs"? On the other hand you can find a lot of benchmarks that use basically Hello World just to test your request response or some rather small request/response sizes, because this is what most applications actually do. You can add a simple database query to it for more realistic load. So, yes, this is more relatable to me as a backend developer b…
I see the issue with your premise. I don't test web frameworks. I do real work
I very much routinely look at large data sets. They just happen to be wrapped up in a different container than ZIP. Typically, they are delivered in MOV, MP4, WAV, etc. I look at a 10MB file and try to remember the last time I counted that small.
Re: How much load can be served from 1m² of sunlight
#19What is the bottleneck is this system?
Re: How much load can be served from 1m² of sunlight
#20Rather than inverting 12V DC to 240V AC and back, you could skip a step and use a laptop car charger, converting 12V DC straight to ~20V DC.
Don't DC-DC transformers use AC internally?
Yes but it's kHz-range PWM square-wave AC; there's no 60Hz sinewave involved. Converting to/from a 60Hz sinewave requires extra circuitry that decreases efficiency. And in this application a 60Hz AC sinewave serves no useful purpose.