Questions tagged [memory]

Memory refers to the SDRAM (a kind of RAM) found on the Raspberry Pi.

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3
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1answer
460 views

Largest micro sd card

What is the largest micro sd card that the Raspberry Pi 3 can handle? I have a 64 gb card that works flawlessly, but would like to try something larger.
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1answer
23 views

Kubernetes in RasPi 4B does not detect RAM

I'm trying to set up a Kubernetes cluster on a bunch of Raspberry Pi 4B nodes. I adopted the setup I use for my v-kube-cluster (Kubernetes in virtual boxed using vagrant). See https://github.com/...
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2answers
27 views

Memory card issues

So I have had it the piwh for a while running pihole never had any problems until recently got a memory issue. I have used the clean and autoremove and gained 28% but of a 32gb SD card it's showing 6....
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1answer
283 views

Plotting CPU and Ram utilization

I want to plot the CPU and memory utilisation of an Apache server hosted in Raspberry Pi 3B+ with Raspbian Stretch in it. For that I have followed the procedure mentioned here. The instructions work ...
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1answer
584 views

memory exhausted: can not allocate memory error in raspberry pi

I am trying to turn my raspberry to a PiCroft. For that I need to use these commands: cd ~/ git clone https://github.com/MycroftAI/mycroft-core.git cd mycroft-core bash dev_setup.sh I did nothing ...
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0answers
28 views

How to address mem_alloc failure (update: can you diff disk images?)

My Raspberry Pi 3B+ has been behaving a little strangely lately and I suspect that the error I'm getting from my pi-bose project is a clue as to what's wrong. I get the same error from the parent ...
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0answers
2k views

Traditional swap file rather than dphys-swapfile?

I have a RPI-3 with the ARMv8 Broadcom SoC. I needed to create a swap file because I was running out of memory on occasion. I used a traditional swap file in a separate partition because the dphys-...
0
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0answers
73 views

Micro SD cards - fastest possible?

I'm using a Pi Zero W with a micro SD HC and a Pi4 with a XC-I card. My questions: whats the fastest micro SD card the Pi Zero and Pi 4 will support? I'm aware that the Pi Zero can read XC but will it ...
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0answers
114 views

What's your experience in improving memory management (Swap on NVMe/SSD, zram, zswap)?

I've got an NVMe SSD attached (via USB 3 port) to my Raspberry Pi and wonder what's the best (and still relatively easy) way to configure it for memory demanding applications (like Geth), assuming ...
0
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0answers
54 views

Raspberry pi unable to allocate memory error when training a model

I'm trying to train a model on my raspberry pi 4 B 8gb and numpy can not allocate memory -- it needs 1.09 gb. I went digging online and haven't found anything useful. Vcgencmd get_mem gives me 948M ...
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6answers
45k views

Resize file system on OpenELEC

I was trying to perform an update and an error told me that I hadn't enough free space. So I connected to my Raspberry through SSH to ask for disk usage with: df -h And I obtained the following ...
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0answers
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Memory leak using php with dio to read /dev/ttyAMA0

I am using my Raspberry Pi 2 (buster, php 7.4.10) to communicate with an inverter in a small solar system. All the code is functional but it tends to crash/exit after a few hours. Looking at task ...
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0answers
18 views

Memory-Related Issue of RPi Seizing Up?

On RPi 3B/Raspbian, I'm experiencing dreadful seize-ups when it appears I've filled the memory up with programs. Mouse movements, for example, can take 10 seconds. This happens with a standard setup. ...
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1answer
932 views

Kernel panic - not syncing : out of memory and no killable processes when booting after setting GPU memory to 256 MB in raspi-config

I tried booting in recovery mode (holding down shift from a USB keyboard attached to the Pi2) and still can't boot to fix. Any solutions? Thanks
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1answer
58 views

How to find the memory requirement (RAM) when network load is know on raspberry

I am want to use the Raspberry Pi for my experimental work. My network load will be approximately 2000bits. How I can find the memory (RAM) requirement against the network load? Which formula can be ...
2
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1answer
150 views

How to partition 32G SD card with 6 sda# drives to max memory usage - Raspberry / Ubuntu

I am only a beginner at Linux-OS's so take this into consideration when you answer this question. I have noticed that my 32G SD card is partitioned into two sda# drives but I need to max out this ...
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2answers
357 views

Low RAM, High Swap Usage?

Based on the screenshot, is this normal? In a couple of days, it will increase to 100MB of swap used (default is 100MB), but with low ram. I am running Pi-hole, PiVPN, log2ram, and No-IP.
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0answers
43 views

Moving /home dir form sd card to USB drive on a Rasspberry pi 4

I'm trying to run Insightface package on raspberry pi 4 after struggling to install all required packages namely cv2 and mxnet but when I exit python or run my program I get “corrupted size vs. ...
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0answers
30 views

practical RAM recommendation for RaspBian web browser? (2Gbytes or 4GBytes)

I am considering using some RaspBerry model for an Linux system which would be occasionally used to browse the web. Let's assume I just want to run a recent Firefox (e.g. 68) with half a dozen of web ...
3
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3answers
5k views

Raspberry Pi with flash memory?

Basically, I am looking for some form of non-volatile memory – which is not an SD card. Orange Pi and others have it, but I can’t find a suitable Raspberry Pi. Did I miss one? Are there any rumours ...
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2answers
427 views

Creating Swapfiles

I have a Pi3 hooked up with a WDLabs PiDrive I have Raspbian Lite installed on the drive and in trying to run some docker images simultaneously some of the images processes are being "killed" with a ...
2
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1answer
602 views

/boot/config.txt gpu_mem has no effect

I put gpu_mem=512 in /boot/config.txt (which file I had to create), and it had no effect. grep memory /var/log/Xorg.0.log returned only 2,839kB: [ 132.909] (II) FBDEV(0): hardware: BCM2708 FB (...
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1answer
594 views

Samsung MZ-76E250B/EU 860 EVO for raspberry pi 4?

I just bought my first raspberry pi and would love to attach an SSD. In search of good value for money, I came across this drive from Samsung. Does someone already have experience with it? I am ...
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2answers
1k views

Running x86 Windows app on a Raspberry Pi 3B

I followed this guide to install QEMU in a chroot and I'm able to execute x86 Linux binaries: https://stackoverflow.com/questions/51895452/qemu-debian-x86-on-raspberrypi Next, I tried installing WINE ...
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0answers
40 views

Why does OOM killer output not appear in dmesg?

I've got a Buster box (10.2) and I'm investigating some system freezes. While going through that, I think I'm not getting the OOM output in the syslog. For instance, running tail /dev/zero which is ...
0
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1answer
254 views

Python process Memory error

I am running a Python program that is scrapping data so whenever I try to retrieve too much data (I have not been able to scrape files up to 16 MB) the programme crashes. The error: INFO: Got 45294 ...
2
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1answer
525 views

How to compile project on Raspberry Pi, even when g++'s virtual memory exhausted despide big SWAP?

I want to build Iroha hyperledger on Raspberry Pi 3. So I've downloaded code and all dependencies and compiler gcc-8.2 (downloaded precompiled from here), then configured without tests: cmake -...
2
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1answer
358 views

How to write protect in DS2431 Maxim EEPROM using Raspberry Pi

I have connected my circuit as mentioned in the below link: Writing/Reading an EEPROM chip using 1-wire bus I am able to read and write through commands mentioned in the link. I would like to know ...
1
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1answer
110 views

Should I avoid using WP with some sort of visual composer when hosting on my Rapberry Pi 4? Is there a better and equally easy approach?

I've been told a WP-install can easily consume 2 Gigs of memory when editing in visual composers in WP. When my Pi only has 4 GB available and on top on that I'm running MariaDB (NOT Nginx), then ...
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1answer
408 views

RPI3B+ Chromium Freeze - RAM Swap

I have some Raspberry pi's that I want to use it as a Browser Kiosk. When I use more than one tab with chromium the pi completely freeze I need to reboot it after this because the lack of ram, if I ...
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0answers
240 views

RPi Memory map and bus addresses

I'm trying to understand the RPi memory map as shown in the BCM2857 reference (http://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.pdf) Is a "Bus Address" the same as a ...
0
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0answers
425 views

Virtual register address translation on the raspberry Pi 4

When taking a look at the manual of the BCM2835 (which seems to be the correct one for the BCM2711), we can see, for example, that the base address of the SPI device is 0x7E204000 (page 152). Assume ...
77
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3answers
146k views

What is the optimum split of main versus GPU memory?

I read that it's possible to allocate either 128MB, 64MB or 32MB to the Raspberry Pi's video memory. Given that my primary use case for this machine is educational: I will be running lightweight ...
4
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3answers
4k views

Raspberry pi class 4 vs Raspberry pi 2 class 10

I currently have the previous raspberry pi class 4 card. I'm considering getting the new raspberry pi model 2 class 10 card. Is there a speed difference between the two cards?
0
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1answer
121 views

Turn Raspberry Pi off but keep the RAM powered?

Is it possible to turn almost everything on a Raspberry Pi off (CPU GPU etc), except for the ram? Basically putting the Pi in a low power state but preserving whatever it was doing at the moment on ...
13
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2answers
19k views

How to permanently disable swap on Raspbian Stretch Lite

I'm at my wit's end; it seems there's no way to tell Raspbian Stretch Lite to permanently disable swap space. Now, it's a bit of an edge case, wanting to keep swap turned off (in this case it's for a ...
0
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0answers
124 views

Raspberry Pi crashing while running VGG16

I need to run VGG16 as a convolutional base for feature extraction on some images. I am trying to initialize it on the Raspberry Pi 3B, but the Pi keeps crashing and restarting. I suspect that the Pi ...
1
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1answer
67 views

Will linking the clock file to an in-memory file lower the wear on the SD card?

I use systemd-timesyncd, which writes a status (probably) to a file at every synchronization. As the Arch documentation mentions, The service writes to a local file /var/lib/systemd/clock with ...
2
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2answers
2k views

What is the correct way to use /dev/gpiomem with mmap to get access to Raspberry PI3 peripherals

I'm implementing a pascal library to deal with RPI3 peripherals. My goal is to control GPIO pins' functions, pins' logical levels, pins' pull resistors, I2C and PWM, at least. To achieve this I'm ...
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0answers
185 views

Pi 3 Model B+ can't boot after changing vRAM

I just got the device (Pi 3 Model B+) and am a total beginner. I'm using NOOB/Raspbian. Every time I try to change the video ram (either through the GUI or the config.txt) the device is unable to ...
29
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2answers
21k views

How does memory-mapped I/O addressing work?

How does memory-mapped I/O addressing work? I'm trying to understand a sample supplied I2S: Anyone got it running?. Configuring Clocks: #define BCM2708_PERI_BASE 0x20000000 #define ...
3
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1answer
113 views

Accessing GPU memory content

I'm currently working with advanced picamera parameters. A new functionnality to come is the "lens shading correction", a RGGB array that modify the image generated by the camera in order to ...
1
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1answer
1k views

Zram appears not to be working

I use very little of my Raspberry Pi 2B's CPU, but I frequently need more memory. In order to free up memory on my Pi running Ubuntu MATE, I set up Zram by installing zram-config. I was pleasantly ...
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0answers
46 views

All files lost during long shelf time

i was using my raspberry pi 3 over ssh and doing a bunch of scripts, cron jobs, etc. then i stopped for a bit and shifted my focus elsewhere and my pi remained unplugged on my desk for a few months. ...
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2answers
152 views

Is it possible to use a DDR2 Ram Chip on the PI as a pager file?

simple, I have a few old DDR2 RAM chips laying around, and would like to use the Ram chips for a pager file on my PI. is this possible?
3
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3answers
4k views

When does the OS kill an application?

I have an application which polls a bunch of servers every few minutes. To do this, it spawns one thread per server to poll (15 servers) and writes back the data to an object, however sometimes the ...
2
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1answer
81 views

Computing power and memory for regression analysis

Does raspberry pi 3 have enough computing power and memory to perform regression analysis?I am making a Coordinate measuring machine prototype for my final year project and I need to perform linear ...
2
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2answers
268 views

What is the memory in the DS3232 RTC for?

I'm looking for an RTC to use with my Pi and came across the Maxim DS3231M. I also saw a similar model on Maxim's website, the DS3232M, which comes with 236 bytes of SRAM. The DS3231 seems to be a ...
5
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1answer
1k views

How can I install keybase (and dependencies) without running out of memory?

I have a Raspberry Pi 3 running the most recent Raspbian distro. I've installed the most recent go, from the prebuilt package and have it on my path: $ go version go version go1.9 linux/arm However,...
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2answers
7k views

How do I set the default maximum Java heap size? [closed]

I want to set the default Java heap size to 1024m without needing to specify the -Xmx option every time I run a jar file. Tried adding export JAVA_OPTIONS=-Xmx1024m to .bashrc file but it didn't ...