Raspberry Pi Forums

1clue

Reading this thread several times I see you're serious. I don't have good news for you. Let's take the speed angle alone for a bit. You said sata drives, and without sacrificing speed. Sata comes in 3 flavors: version 1 has 150 mb/s. V2 has 300 mb/s. V3 has 600 mb/s. I'm guessing you have sata2 sinc...

1clue

I think I found what I'm missing here: http://mythopoeic.org/pi-ntp/

The problem is I need another 12+ hour kernel compile.

1clue

And this one for pin 12:

http://www.geppettoelectronics.com/2014 ... erver.html

1clue

I was following this tutorial:

https://learn.adafruit.com/adafruit-ult ... troduction

1clue

Hi, I have a B+ with an adafruit ultimate gps breakout v3. I'm using it as a stratum 1 time server. I just recompiled the kernel to use PPS, installed it and rebooted. It's not working. I don't know what happened, but AFAICT everything is done right. Can somebody take a look and give me ideas? Thank...

1clue

Wow, I would never have thought I'd see so many big blue/big iron guys on a pi forum. I was at IBM Rochester for a few years, maybe 96-2k. AS/400 land, and RS6k. I went there thinking I was going to work on legacy stuff, I was critical of everything until I got on VM and pulled back a million rows f...

1clue

Excellent, I'm used to lilo and grub, this arm boot loader is simple but somehow I have a hard time figuring it out. I might play with over-clocking at some point, but my intent is to get hardware that can stay viable for years, and over-clocking inevitably reduces life expectancy of the parts. In t...

1clue

OK that's what I wanted to know. I'm a server guy, I don't over-clock anything, ever. If you need more speed you get better hardware. Generally speaking, for me anyway, the compile portion of a kernel compile is just enough time to get a cup of coffee or glass of water. I'm experimenting with the pi...

1clue

Hi. How long does it take to compile the kernel on a stock B+ with Raspbian? I recently got 3 raspberry pi B+ boards. Actually ordered them the day they came available. One of them has all the gui removed, and gpsd and ntp on it to make it into a stratum 1 time server. It works, but no PPS. I finall...

1clue

I did the server-side changes in the following link to raspbian, and it seems to be staying connected now.

https://docs.oseems.com/general/applica ... le-timeout

1clue

Connected via ethernet. Static IPs on a single subnet. Logs say the ssh was disconnected. Same quality on all systems. Gentoo sd works fine and stays connected for days. Same board, same power supply, swap to raspbian and it times out in 5 minutes or so EVERY time I leave it idle. Other sd card cont...

1clue

Hi, I have 3 rpi b+ boards. 2 have Raspbian, 1 has Gentoo. When I ssh to Raspbian the connection is fine as long as I keep typing. When it sits idle for a few minutes it hangs up. The Gentoo pi will stay connected all night and into the next day. This is profoundly irritating, it's only a couple min...

1clue

Don't be snarky. If you find something you need, you can always install it again. If you're more comfortable with a debian based install you can start with something like raspbian and uninstall things you don't want. It has been mentioned above, but another way is to use 'aptitude' as root, and unin...

1clue

It turns out gcc doesn't do too bad:

http://www.nersc.gov/users/computationa ... mparisons/

1clue

I hate to be a pain here, but I strongly suspect that just about any modern compiler that people actually use (e.g. gcc) is probably better than the average programmer coding in assembly. Efforts in optimization can take place on your bit of code, but what's incredibly more effective is to optimize ...

1clue

Yes programming in assembler beats all other languages in speed and performance.... This is not necessarily true. It depends on your compiler and other considerations. Back in college, a bunch of us assembly enthusiasts tried to beat various compilers with hand-written code. This was in the early 9...

1clue

If your wordpress is its own web server, then I'd still use apache2 with name-based virtual hosts as a front end. You can have as many sites as you want and have apache proxy the transactions as necessary by the name typed into the browser. It looks like two different web sites, you don't need anyth...

1clue

The fewer things on the boot image, the faster the boot. The smaller/less complex things on the boot image, the faster the boot. This is true with any given hardware. This is also the approach I use when building normal Linux. I use Gentoo but if you don't get buildroot you won't get Gentoo. But the...

1clue

Need to turn on PPS in the kernel, according to the HOWTOs on it. I'm also considering installing Gentoo on a pi. The distcc thing will be cross compiling on my i7 gentoo box. First time ever for both distcc and cross compiling, I'm a bit nervous. Theoretically the i7 is set up for it already. Thanks.

1clue

I found this: http://xecdesign.com/qemu-emulating-ras ... -easy-way/

Reading, don't know if this is it yet.

1clue

Hi, New to Raspberry Pi, not new at all to Linux. Usually I'm using something with an i7 in it though, this is difficult for me in terms of scaling. I just bought 3 B+ boards a couple days ago, but they're not here yet. One board is going to be a stratum 1 time server, so I know I'm at least going t...

Search found 21 matches

Re: Lots of HDDs: RPi vs San vs Nas?

Re: No PPS on adafruit ultimate GPS v3

Re: No PPS on adafruit ultimate GPS v3

Re: No PPS on adafruit ultimate GPS v3

No PPS on adafruit ultimate GPS v3

Re: b+ kernel compile time?

Re: b+ kernel compile time?

Re: b+ kernel compile time?

b+ kernel compile time?

Re: Raspbian ssh hangup after a few minutes

Re: Raspbian ssh hangup after a few minutes

Raspbian ssh hangup after a few minutes

Re: Barebone Basic OS needed

Re: REALLY fast os?

Re: REALLY fast os?

Re: REALLY fast os?

Re: RaspberryPi, Two Domain Names, Two Wordpress Sites?

Re: REALLY fast os?

Re: Raspberry Pi emulator?

Re: Raspberry Pi emulator?

Raspberry Pi emulator?