Sadly still no crypto extensions (accelerated sha and aes).
Raspberry Pi 4
491–500 of 859 posts
Re: Raspberry Pi 4
#492Now all I need is a digitizer to port and make a full blown smart screen(or whatever thingy) with android or Ubuntu(possible?!) or do 100 other stuff that i planned with pi 1 :|
Re: Raspberry Pi 4
#493Earlier quoted context omitted.
Forgive me, but isn't 20ms kind of a lot of latency? That's more than a frame at 60hz. I assume I'm missing some context here.
In audio that's still acceptable. In our games we usually run at either 40ms or 60ms audio frame size(which means you are getting at least that much latency before hearing the sound for your action).
Fair enough, but I got the impression the parent was really trying to push the envelope here, so "acceptable" seems a far cry from that goal.
Re: Raspberry Pi 4
#494Earlier quoted context omitted.
With 4GB of RAM, you'd even be able to use ZFS. Does it use ECC memory? If not, you should not use ZFS. Without ECC memory, ZFS carries the nasty risk of writing good data with a bad checksum, leading to data loss which would not occur in other filesystems (those that do not try to correct errors on the fly like ZFS).
As I understand it, this is just a myth. Here's a post [0] from Matthew Ahrens, one of the co-founders of ZFS who has remained active in its development: > There's nothing special about ZFS that requires/encourages the use of ECC RAM more so than any other filesystem. If you use UFS, EXT, NTFS, btrfs, etc without ECC RAM, you are just as much at risk as if you used ZFS without ECC RAM. Actually, ZFS can mitigate this…
> Actually, ZFS can mitigate this risk to some degree if you enable the unsupported ZFS_DEBUG_MODIFY flag (zfs_flags=0x10).
Ooooo, I hadn't heard about that one. I have one non-ECC box running ZFS where I might want to enable this. If the performance impact is negligible, it'd be worth trying.
Re: Raspberry Pi 4
#495How would this perform as a linux desktop? I'm thinking about grabbing one for my Mom, who doesn't have a computer at home.
Re: Raspberry Pi 4
#496RPI would be awesome for NAS if you could connect SATA somehow
The USB 3.0 ports should give 100MB/s (Benchmarks show up to +300MB/s), and you can mirror two disks for RAID-1. With 4GB of RAM, you'd even be able to use ZFS.
I tried ZFS with 4 GiB RAM in the past and it was not fun.
Does it work for you?
Re: Raspberry Pi 4
#497Looks awesome! Wish they had added analogue inputs, does anyone know why they don't do this? Worked on a project where I needed analogue input, and I had to use a Pi/Arduino combo.
Re: Raspberry Pi 4
#498So on one hand, I get the excitement. This is a very popular platform that has a ton of community support and does a bunch of stuff. On the other hand, it isn't great at anything (besides the community - which shouldn't be underestimated, sure). It's also using a pretty proprietary chip - if you build a project off of a Pi, it's hard to migrate to a custom PCB. As a NAS, you probably would want ECC and a bunch of SAT…
> Perhaps the versatility is the killer feature.
That is a thirst of it. There is little it does massively better than other options, in fact for everything I can think of there are better options, but it is powerful to do most things well enough.
An other third is the cost. There are not many options with a similar price/utility ratio, particularly when you count support (see point three).
The thirst third is support: up-to-date Linux builds supporting the hardware (a common complaint with other devices is old and/or buggy drivers that are a faf to build), community size & momentum, commercial add-ons, ...
> As a media box, you'd want a SATA port
Not for a media display box, which is what my currently active pair are used for. Local media storage is on the network in a box hosting many drives and doing other jobs too, and other media is remote anyway. And if you are using something for storage you want multiple SATA ports (I can't be the only one paranoid enough to apply RAID1+ to anything intended to survive the month!).
The Pi3 (and 2 for that matter) does admirably as a Kodi box, though it struggles with x265 (720p is fine though it drops frames on some encodes, 1080p is sometimes surprisingly OK in the winter but causes the thermal throttle to kick in after a while when the ambient temperature is higher) so I'm quite interested in the fact that the 4 seems to support this in hardware - I'll be keeping an ear open for news that Kodi supports its hardware support for that codec (and if it handles the commonly used format options well not just the baseline).
> router / pfSense without a second gigabit ethernet
You can use an external device, but yeah that does wreck the nice small form factor somewhat, adds to the cost, and you have the hassle of finding a reliable well-supported one. Though the main complaints I've seen for using simple SoC systems like this as a router (and one of the reasons why I've not got around to trying it myself yet) is not that 100Mbps is a limitation for most home users (anecdote: have ~76mbit down, ~17Mbit up, I know few here with much better) but that they don't have the umpf to keep up with that level of traffic, especially in both directions, with any degree of extra processing (i.e. being a VPN endpoint for a chunk of that traffic).
Re: Raspberry Pi 4
#499Can't wait to buy this, boot it up, play with it for four hours, then stick it in the same desk drawer with the other Pis I have bought over the years. (The upgrades look great, just my attention span is not so great)
> with the other Pis I have bought over the years My wife refers to this as the raspberry pile.
Love it, A+
Re: Raspberry Pi 4
#500Earlier quoted context omitted.
The Raspberry Pi 4 B uses ARM VideoCore IV. As far as I can find HDR will only come in the updoming VideoCore V. So no. No HDR yet.
The spec table says VideoCore VI. I really hope that is not a typo. I suspect it really is a VC6 because 2x4k is a big bump in pixel count and without a corresponding bump in fill-rate, perceived performance will drop. [edit] looking at the benchmarks it's a modest boost. Now about twice the FPS of a PI-2 for Quake3 at equal resolution. Be interesting to see if something with more complex shaders changes the relative…
VI == 6
IV == 4