Raspberry Pi Forums

LitterBugs

At any rate, the replacement has been running on stock clocks over 24 hours now with no problems. Same SD with the same image reset to default clocking, same 2.5A power supply, Same powered USB SDR receiver, etc... 72 hours straight on the replacement hardware with no issues on stock clocking. Glad...

LitterBugs

Surprised there are differences- they are all made in the same factory on the same production line so all components should be electrically the same. There might be colour difference - when you make >200k boards sometimes components colour change between batches. The display and camera connectors w...

LitterBugs

Mine is still hanging every 24 hours or so even reduced to 1200/450. I'm swinging by MicroCenter today to swap it out. Regards, LitterBug The local MicroCenter sells both Allied Electronics and Element 14 Pi 3 B+ models. There are actually some minor differences between the two. Wish I had taken pi...

LitterBugs

Mine is still hanging every 24 hours or so even reduced to 1200/450. I'm swinging by MicroCenter today to swap it out.

Regards,
LitterBug

LitterBugs

report vcgencmd get_config int | grep -E "(volt|sdram)" you may be sufering the same but that will not explain the heat how hot ? what does vcgencmd measure_temp say It only gets hot AFTER it locks up. It consistently runs 44C under normal operating conditions. Last night I just happened to catch i...

LitterBugs

Hmmm. Didn't make it 24 hours. Hung again tonight even with lower clocking. Definitely more stable, but still not reliable.

Any settings I should try before swapping it out at my local store where I purchased it?

Regards,
LitterBug

LitterBugs

I dropped arm_freq to 1200 and sdram_freq to 450 and have been stable for 12 hours. So it looks as if I am experiencing the same issue as others. Any particular settings you would like me to check and/or set for comparisons sake? Regards, LitterBug PS: I have statistics logging on my box..... Period...

LitterBugs

I have a few PI3 and Pi2s running headless flight feeders 24x7x365 to FlightAware. Picked up a Pi3 B+ over the weekend and am having lockup issues as well. Currently it will run for 4-8 hours and then hang. When I get to it, the red power light is on solid and the board is really really warm. It wil...

LitterBugs

If you care enough about the speed to spend this much time testing, you should really do a USB install using a smaller SD card to start the boot process. The Sandisk Cruiser Fit (USB 2) I tested had a read above 20. This one: http://www.amazon.com/dp/B00LLEODCK/ref=twister_B00MQL3OHW?_encoding=UTF8...

LitterBugs

I have been buying gear from MicroCenter for several decades and never had a problem with anything sold new. I bought both of my Pi2s from their local store here in the states and have had no problems.

Regards,
LitterBugs

LitterBugs

Bump. Edited my above post to include the latest Samsung 16GB Class 6 card. Comes in very close to the Pro card without the uhs-1 expense

Regards,
LitterBug

LitterBugs

Lower class cards don't usually perform better than higher ones, they just cost less. Running an OS is pretty much all about random piecemeal reads, whereas class is ALL about sustained sequential write speed (which is crucial if you're going to put it in a Video Camara). My class 4 Sandisks Will r...

LitterBugs

In general, unless you have a real-time application where you're shifting gigabytes of data the class of the SDCard doesn't matter a hoot. If you enable the new dtoverlay=sdhost in /boot/config.txt it matters even less than a hoot. If you don't care about response time, the performance of a card ma...

LitterBugs

SD Class is nothing more than the minimum sequential write speed for the card and tells you nothing about the technology behind the card. A quality class 10 card will outperform a cheap card any day. This "myth" that class 4 or 6 cards are better is based on a lot of misconceptions. Pluggy, If you c...

LitterBugs

I use UHS-1 in all of my Pis. I have 2 B+ and 2 Pi2s. You will not get the UHS-1 rated speeds but rather the Class 10 speed if the card is rated Class 10 and UHS-1. XC can work but I have never tested > 64GB.

Cheers!
LitterBug

LitterBugs

The "class" of a card is the minimum sequential write speed and there is nothing special about class 4 and 6 cards other than they are slower than the newer cards. The important bit here is "sequential write speed" because the Pi doesn't do that much sequential writing, except when you are saving a...

LitterBugs

Well, actually there is something about class 4 and class 6. They're not made for continous write, but usually give the most read write speed because that's how they are made. They're cheap as well. And you have benchmark results to back this up? Speed class is a Sequential write minimum rating and...

LitterBugs

There have been several references to using a Micro Sd u chip class 6 because it's specs interact with the Pi 2b better than a class 10 memory card. I have not been able to find a recommended manufacturer and model #. I want to resell the Pi 2b with the best 16 Gb Micro memory chip available wheath...

LitterBugs

Why not have speed AND reliability? Take the time and spend the money to get a quality name brand SD card and/or hard drive. If you just pick up the cheapest thing or the first thing you find, you are probably not going to have either and are more likely to have problems. Unfortunately looking at a ...

LitterBugs

A thread I had found before but after checking the first couple pages and the last which only had Crystal Mark benchmarks I gave up on as not being on device but I just noticed after hitting a middle page in a Google search the middle was a lot of results on device. So this thread is not really nee...

LitterBugs

Handful of cards tested on Pi2 Raspian, sorted slowest to fastest: Toshiba 16GB Class 4 (took several hours to complete) Block Size 4k Write 0.907227 Rewrite 0.953125 Read 2.81543 Reread 2.89648 Random Read 2.375 Random Write 0.00390625 Block Size 512k Write 4.40723 Rewrite 4.21582 Read 17.5498 Rere...

LitterBugs

Oops... I posted incorrect stats from wrong box... fixing and will repost.

LitterBugs

Not finding the iozone with apt-get on raspian. Did a apt-get update and still can not find it. I have it installed on one of my Pi2 boxes, but it came from a .tar What OS are you running? You could just use the 'dd' command which is native to Linux to get benchmark data, or use the data that is alr...

LitterBugs

I like the idea of that one being 5.1v. I wonder how good this one is. http://www.microcenter.com/product/441187/Micro-USB_Power_Supply_for_Raspberry_Pi_B_with_Built-in_4ft_Cable_-_2_Amp I have this very power supply on one of my Pi2s with a DVB-T dongle, wireless, and keyboard. Have been using it ...

LitterBugs

Thanks very much. My microsd is a class 10 so the RPI is doing the best it can. Actually Class 4 or 6 are more suited to the RPi I/O, many posts on this subject ;) This mythical information about class 4 and 6 cards being better suited for the RPi is not based on fact and should stop being perpetua...

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Re: Raspberry Pi 3 B+ lockups

Re: Raspberry Pi 3 B+ lockups

Re: Raspberry Pi 3 B+ lockups

Re: Raspberry Pi 3 B+ lockups

Re: Raspberry Pi 3 B+ lockups

Re: Raspberry Pi 3 B+ lockups

Re: Raspberry Pi 3 B+ lockups

Re: Raspberry Pi 3 B+ lockups

Re: On the Pi itself, SD benchmarks.

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Re: On the Pi itself, SD benchmarks.

Re: Class 4 microSDHC Card - Which OS?

Re: Class 4 microSDHC Card - Which OS?

Re: Class 4 microSDHC Card - Which OS?

Re: SDHC UHS-I

Re: Micro SD Reccommendation

Re: Micro SD Reccommendation

Re: Micro SD Reccommendation

Re: Speed v.s. reliability

Re: On the Pi itself, SD benchmarks.

Re: On the Pi itself, SD benchmarks.

Re: On the Pi itself, SD benchmarks.

Re: On the Pi itself, SD benchmarks.

Re: Help finding good power supply

Re: Rapsberry PI 2 MicroSD