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8GB Raspberry Pi 4 on sale now at $75

raspberrypi.org

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Re: 8GB Raspberry Pi 4 on sale now at $75

#181

Post by detaro »

iforgotpassword wrote: post #174

I was recently wondering if there's any kind of single board computer that would be suitable for just shoveling data on the network at close to 10gbps. If you have something that basically just sendfile()s data, an average desktop PC from 5 years won't pull a sweat saturating 10gbits, barely reaching two digit CPU%. Are there are any SBCs that would have suitable IO for this? The pi4 has USB 3 which internally is con…

https://www.solid-run.com/marvell-armada-family/macchiatobin... (and a few other solid-run offerings)

Re: 8GB Raspberry Pi 4 on sale now at $75

#182

Post by subhobroto »

jrockway wrote: post #175
iforgotpassword wrote: post #174

I was recently wondering if there's any kind of single board computer that would be suitable for just shoveling data on the network at close to 10gbps. If you have something that basically just sendfile()s data, an average desktop PC from 5 years won't pull a sweat saturating 10gbits, barely reaching two digit CPU%. Are there are any SBCs that would have suitable IO for this? The pi4 has USB 3 which internally is con…

My experience is that these small computers don't even do well at 1Gbps. When I worked on Google Fiber, we really wanted to implement a speed test between our routers and some trusted server, but the chipset we used couldn't generate data fast enough. (We could route at 1Gbps because it took a hardware fast path, but the software-only path wasn't good enough to provide useful speed tests.) I have subsequently tested…

> Routers can do it, but it's hardware accelerated and won't generate packets at that speed

Yeah,

Are there any SBC with an off-CPU networking fibre/module?

What I am building are LTE enabled ethernet bridges.

The closest fits that I have found are router boards but most of them don't come with mini PCIe ports that I can connect LTE modems to.

There are a few proprietary router boards but I was thinking there could be other options - you would likely know!

Re: 8GB Raspberry Pi 4 on sale now at $75

#183

Post by skissane »

_ph_ wrote: post #131
skissane wrote: post #66

Earlier quoted context omitted.

Wasn't the EU single market supposed to fix that?

The EU is a single market, but that doesn't stop all the countries having different languages and consequentely different keyboard layouts. So you are looking in your country, perhaps in a second, which shares your keyboard layout.

About laptops, I mostly agree. (While the wrong keyboard layout is something you could learn to live with or workaround, in practice it may well be too unpleasant to be worth it.)

For desktops, it shouldn't really matter. One quite likely already has a spare USB keyboard with the right layout, and if one doesn't, it shouldn't cost much to buy one (whether new or second-hand).

Re: 8GB Raspberry Pi 4 on sale now at $75

#184

Post by finnthehuman »

sneak wrote: post #65
intsunny wrote: post #41

I am strongly hoping that the 8GB Rpi + NexDock would be a good low cost laptop for web browsing, text editing and terminal. I've been turned off from investing in a new laptop for a variety of reasons: - Apple has made questionable hardware design decisions lately. If Louis Rossmann is to be believed, the T2 chip + secureboot situation is just as bad as the old keyboard situation. It sucks having no say over the har…

> Apple has made questionable hardware design decisions lately. If Louis Rossmann is to be believed, the T2 chip + secureboot situation is just as bad as the old keyboard situation. It sucks having no say over the hardware. His claims were significantly overblown. If your T2 dies, yeah, your data is toast, because the disk keys live in the T2. But the same applies for your SSD dying itself, and the T2 is not especial…

It's just like the keyboard in a sense. Before the keyboard problems were a wildly-acknowledged issue I had to listen to people online argue that the field failure rate was perfectly fine, when they didn't know either the actual failure rate nor know anything about reliability engineering.

Maybe the failure rate is fine, maybe it's not. All we know right now is that they added an additional single point of failure. The _very best case scneario_ for Apple is that they understood they were adding a single point of failure, ran the math to find what the increased expected failure rate would be (basic statistics say they definitionally raised it), and decided they didn't give enough fucks to do anything differently.

I'm perfectly fine with with a person who frequently deals with the people experiencing that failure doing some old fashioned New York shittalking towards that design decision.

Re: 8GB Raspberry Pi 4 on sale now at $75

#185

Post by pengaru »

notanote wrote: post #125
znpy wrote: post #79

Earlier quoted context omitted.

I'm surprised no one is getting excited for pxe boot. That's a game changer.

That’s been available on earlier versions of the Pi (2B v1.2, 3B, 3B+). It was not available at launch for the Pi 4, but was released in beta firmware in late September, and is currently part of the critical firmware update. It works well, allowing separate boot images for each individual Pi on your network.

> It works well, allowing separate boot images for each individual Pi on your network.

Isn't that a natural capability with PXE implemented at the server keyed off the MAC address?

Re: 8GB Raspberry Pi 4 on sale now at $75

#186

Post by bouk »

ChuckNorris89 wrote: post #54
cat199 wrote: post #51

Earlier quoted context omitted.

> In my EU country second hand hardware prices are through the roof. Curious - any thoughts on why?

Small country, small market. Small market, low supply. Low supply, high prices.

Small market, low demand. Low demand, low prices

Re: 8GB Raspberry Pi 4 on sale now at $75

#187

Post by liamness »

kart23 wrote: post #21

This is cool. Whats really holding it back at this point is it's use of a sd card. I find that its pretty difficult to use 4gb of ram on a pi practically, and its often bottlenecked by I/O. It might just be my SD card, but executing trivial commands sometimes takes forever and reminds me that I'm in a pi. I've heard ssds can improve speeds a lot, but you still cant boot off usb.

A new spec for microSD cards (microSD Express) was announced last year, which would let them use similar protocols to SSDs. I don't know if this means they'll support things like TRIM, without which their performance may initially be fast but degrade over time. Still, it would be a significant improvement.

Re: 8GB Raspberry Pi 4 on sale now at $75

#188

Post by youngtaff »

NightMKoder wrote: post #22

For folks considering running 64-bit on the pi - I don’t think you need 64-bit userland. I’ve been running a 64-bit kernel on my pi with 32-bit userland perfectly fine. The few things that actually need 64-bit (I’m looking at you mongo) run in 64-bit mode via docker. That said, I’m not 100% sure how much memory overhead I have in this setup vs just running the 64-bit userland. Technically there’s a very interesting “…

This was an interesting comparison of 32 vs 64bit performance

https://medium.com/@matteocroce/why-you-should-run-a-64-bit-...

Re: 8GB Raspberry Pi 4 on sale now at $75

#189

Post by ChuckNorris89 »

bouk wrote: post #186
ChuckNorris89 wrote: post #54

Earlier quoted context omitted.

Small country, small market. Small market, low supply. Low supply, high prices.

Small market, low demand. Low demand, low prices

Except the reality says otherwise.

Big markets like US, UK and Germany have low prices on consumer products and in small markets like Austria and BeNeLux countries consumer products cost more.

Re: 8GB Raspberry Pi 4 on sale now at $75

#190

Post by kart23 »

2sk21 wrote: post #57
kart23 wrote: post #21

This is cool. Whats really holding it back at this point is it's use of a sd card. I find that its pretty difficult to use 4gb of ram on a pi practically, and its often bottlenecked by I/O. It might just be my SD card, but executing trivial commands sometimes takes forever and reminds me that I'm in a pi. I've heard ssds can improve speeds a lot, but you still cant boot off usb.

I also read recently that the lack of cooling can really throttle the performance of a Pi4. Do you have a good heat sink and fan installed?

I have this heatsink on it, and I've never seen the cpu temps above 60C. It gets hot, but I think it does the job.

https://shop.pimoroni.com/products/aluminium-heatsink-case-f...

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