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This website has 81% battery power remaining

solar.lowtechmagazine.com

181–190 of 365 posts

Re: This website has 81% battery power remaining

#182

> This was caused by a software upgrade of the Linux kernel, which increased the average power use of the server from 1.19 to 1.49 watts I wonder what change in the linux kernel caused the increased load. Someone out there is responsible for this crime!

Perhaps Spectre/Meltdown mitigations?

Re: This website has 81% battery power remaining

#183
post #167

How would I even host a website at home? 20 years ago I knew how to get a fixed IP from my local ISP but I don't know how to do that anymore.

Give them a call? Or switch ISP if yours doesn't allow it. Otherwise you need a relay service, at which point you might as well host with them directly.

I'm in a weird situation, hence my confusion. I live next door to an Xfinity hotspot. I signed up with Xfinity so they sent me a modem. I couldn't get it to work, but I found I could just use the hotspot. It works great but it serves potentially thousands of users so it's not personal to me.

Re: This website has 81% battery power remaining

#184
post #169

Earlier quoted context omitted.

It's not because of AT&T, it's because of government regulation.

Riiiiight. I'm sure it has nothing to do with a complete lack of competition (cf. how in communities where Google Fiber showed up, the incumbents were suddenly quite capable of getting gigabit fiber to households, and for a price that was competitive with Google Fiber, and a fraction of the price they were charging for inferior service before Google Fiber's arrival). I'm sure it also has nothing to do with the billio…

Lack of competition is due to regulatory capture. Local governments often disallow competition in the ISP space.

Re: This website has 81% battery power remaining

#185

I think this also shows how inefficient modern website hosting is. The fact that this person was able to get a raspberry pi to host the #1 website on HN powered by a small 50 watt solar panel is very cool (meaning maybe 10w average power budget), but also shouldn't be as uncommon as it is today. To put this in perspective, a modern server uses 50-100 watts idle doing nothing, and many more under load. To handle the t…

[deleted]

Re: This website has 81% battery power remaining

#187
post #63

Earlier quoted context omitted.

Nothing to do with site hosting. css animations don't eat the server's CPU; nor does JS bloat (other than bandwidth).

JS bloat can have significant server overhead when data is loaded dynamically. It’s generally more efficient to have one GET request that can be heavily optimized than a lot of tiny XMLHttpRequest that need to be parsed separately. That may flip around when someone spends a long time interacting with a SPA, but there is plenty of truly terrible code in the wild.

I've built embedded web interfaces serving up static pages that were precompressed with gzip and then used XHR to fill in dynamic content. I kept it under 100K for the uncached download (zero third party scripts). Everything worked well and was reasonably lightweight as long as you avoided framework bloat. Not having to compress anything on device helps a bit on energy usage although that wasn't a concern.

Re: This website has 81% battery power remaining

#188

I think this also shows how inefficient modern website hosting is. The fact that this person was able to get a raspberry pi to host the #1 website on HN powered by a small 50 watt solar panel is very cool (meaning maybe 10w average power budget), but also shouldn't be as uncommon as it is today. To put this in perspective, a modern server uses 50-100 watts idle doing nothing, and many more under load. To handle the t…

Though topical thought, the Uk NHS site is text and blue hyperlinks. Its still collapsing tonight because the prime minister just announced booster jabs available for everyone. (Guess what I'm spending my evening doing). So you can't always win.

It'd be interesting to know what you actually are doing!

Thoughts and Prayers, etc

Re: This website has 81% battery power remaining

#189
This is such an amazingly simple thing to do that I’m surprised it shows up so consistently on HN.

A raspberry pi or similar, a solar panel, a charge controller, and a battery.

Running everything off it (router, modem) would be cooler, since that’s likely powered from the home and connected via WiFi.

Re: This website has 81% battery power remaining

#190
post #73

Earlier quoted context omitted.

How many more hardware configurations is Linux deployed on than MacOS? Would it be in the region of 3-4 orders of magnitude more hardware configurations? How long has there been a power consumption focus in the linux kernel? The efforts to reduce power usage by the linux kernel pre-date PowerTOP’s first release and wiki tells me that was 2006. Is Apple way ahead or is it just less popular?

> Is Apple way ahead or is it just less popular? They're definitely solving a narrower problem but they do appear to have it solved. Is there even a subset of hardware configurations for which this is the case with Linux? (if there is I would love to know about it)

> Is there even a subset of hardware configurations for which this is the case with Linux?

That's not how cross-platform, cross-application software works. Linux is used for everything. Every other change for power efficiency will get balanced out by another change for raw performance.

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