How to prioritize jetson nano swap file - nvidia

We have installed Jetpack 4.2.3 on jetson nano. This has created a 2 GB built in zram memory.
We have additionally added 4 GB swap file using the following
https://www.jetsonhacks.com/2019/04/14/jetson-nano-use-more-memory/
The system is taking priority to zram. we want to set the newly created swap to take priority over zram.
How to prioritize swap in jetson Nano?
How to change Swap partition priority?

Disabled zram by removing nvzramconfig.sh from /etc/systemd/ and zram is not invoked when the system boots. Now the swap is working perfect

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cant manage ram and core settings in docker

I am using Docker for Windows last version.
Before a week I had an update which asked me if I want to switch between HYPER-V to WSL if I remember correctly.
Swapped it and everything worked well as it should be, today I added a ram (same ram as I had, corsair vengeance 2x8gb 3200mhz ddr4).
but everything works good. I have 32 gigabyte now so I wanted to change the limit I gave to docker which was 6/16 cores and 6/16 ram. wanted to switch it up for like 12/32 ram so I was searching for the advanced setting which I used to limit the ram and cores before and I didn't manage to find it.
seems like the option just disappear.
I have to give docker more ram because I want him to run 2 programs at the same time which take more than 6gb ram.
what I have and what did I try conclusion :
I'm using windows.
I have 32 gigabyte ram.
I tried to reinstall docker.
I tried to remove the image and containers and add them again.
still did not find the setting which I used before which is really annoying.
any ideas ?
apparently using WSL based engine removes the option "advanced" so Currently using hyper-v instead of wsl solved my problem.
thanks anyway

Red-Pitaya Kernel: add additional Modules

Is it possible to add additional modules for some USB devices to the default redPitaya kernel?
Right now the kernel seems to be static without module support.
Especially focus on adding several usb-WIFI dongles to make them work out of the box - the only USB WIFI driver that I have found to be compiled in is: 8192cu.
It may also be helpful adding some other modules like USB-serial console or such...
(also enabling /proc/config.gz may help...)
In release 0.90, the Red Pitaya kernel is static with only 8192cu WiFi support in order to minimize the size of the kernel & especially the ramdisk.
But, like any other Linux kernel, it is configurable. You can build your own kernel flavour by modifying the Red Pitaya kernel configuration file and rebuilding the kernel & modules. But keep in mind the ramdisk size is limited to 10 MB due to current u-boot configuration. The elegant solution would therefore be to put the modules onto the SD card (/opt/lib) instead of increasing the ramdisk.
Regarding /proc/config.gz, it is already enabled in release 0.90 and can be accessed using:
redpitaya> gunzip -dc /proc/config.gz

Weka GUI - Not enough memory, won't load?

This same installation of Weka has loaded for me in the past. I am simply trying to load the Weka GUI (double click on the icon) and I get the following error. How can I fix it?
OutOfMemory
Not enough memory. Please load a smaller dataset or use a larger heap size.
- initial JVM size: 122.4 MB
- total memory used: 165.3 MB
- max. memory avail.: 227.6 MB
Note:
The Java heap size can be specified with the -Xmx option.
etc..
I am not loading Weka from the command line, so how can I stop this from occurring?
Just write an answer here for ubuntu users.
If you apt-get install weka, you will have a script installed at /usr/bin/weka
The first a few lines look like below:
#!/bin/bash
. /usr/lib/java-wrappers/java-wrappers.sh
# default options
CLASS="weka.gui.GUIChooser"
MEMORY="256m"
GUI=""
Just modify the line starts with MEMORY so that you have larger upper bound.
MEMORY="2048m"
I'm not sure why you were able to use it before but not now. However, you can specify a larger heap size by changing the RunWeka.ini configuration file. On a Windows machine it should be in the Weka folder of your Program Files directory. You could try a line specifying, for example,
maxheap=200m
There might already be such an option in that file that you can simply change to a larger number.
Here is how to do it on Mac:
right-click on the main Weka file (that opens the Gui) and select "Show Package Contents";
open Info.plist file with any text editor;
change the -Xmx option.
viola

How to limit the memory usage of WinCE 6?

I have compiled a Wince 6 kernel using VS2005 platform builder. The target system have 256MB RAM, but I only want Wince 6 to use 128MB. How can I set this up? I am assuming to put maxmem=128MB in boot.ini, but I cannot find boot.ini in my wince 6 source code and any file inside platform builder directory.
Update the RAM mapping in config.bib.
I think it a good thing to share too....
for example i fyou have a physical RAM 128MB. than your NK size is for example 30MB.
the total size reported you your system will be somehow less like 96MB because the NK are also occupied the RAM at the runtime.
/nansah

How can I easily add storage to a VirtualBox machine with XP installed?

When I installed Windows XP on a VirtualBox machine, I made the hard drive only 10 GB since and assumed it would expand in size (as do hard drives in VMWare as far as I can remember, isn't this true?).
In any case, I'm trying to install Visual Studio 2010 beta on this Virtual Box XP image and it has run out of disk space.
Googling for an answer, I'm finding complicated tutorials like this which show you how to increase the size of a VirtualBox hard drive "in just a couple hours".
But I can't imagine it would be that hard to either:
increase the size of a virtual disk (after all, it is virtual)
create a new hard drive of, say, 20 GB and just attach it in the virtual machine as the D: or E: drive
How can I easily add storage space to a VirtualBox machine with XP installed?
I found this nugget at the link following. It worked perfect for me and only took 5 seconds.
As of VirtualBox 4 they added support for expansion.
VBoxManage modifyhd filename.vdi --resize 46080
That will resize a virtual disk image to 45GB.
https://superuser.com/questions/172651/increasing-disk-space-on-virtualbox
Note: This applies to pre-4 VirtualBox. In VB4, HDD expansion has been introduced.
According to the VirtualBox documentation:
When creating an image, its size needs to be specified,
which determines this fixed geometry. It is therefore not possible to change the size of
the virtual hard disk later.
So, the easiest way to add additional space to an existing VM is to attach a second hard disk. Go to the VM Settings > Hard Disks > Add New. Then, click the "Select Hard Drive" button and click on "New". Follow the wizard to create a new virtual hard disk. It will then show up as D: or E: in your guest OS.
For Windows users there's an additional user friendly option: CloneVDI Tool by mpack. It's a GUI front-end to VBoxManage that makes things a little easier to work with.
http://forums.virtualbox.org/viewtopic.php?f=6&t=22422
As Alexander M. mentioned, you'll still have to use GParted, Partition Magic or a similar partition editor to grow your partition to the newly allocated physical drive. To do this just download the GParted iso, mount it as a bootable drive in the VirtualBox and boot from it.
http://gparted.sourceforge.net/download.php
Newer versions of VirtualBox add an option for VBoxManage clonehd that allows you to clone to an existing (larger) virtual disk.
The process is detailed here: Expanding VirtualBox Dynamic VDIs
Step 1 :
create new virtual disk as per #mhaller instruction
Step 2 :
Open Run dialog box type diskmgmt.msc and enter
Step 3 :
Select uninitialized partition, right click->initialize
Step 4 :
Select the partition again, right click and create extended partition, again right click create logical drive (adjust the partition size if you need in wizard)
Thats all
For windows users:
cd “C:\Program Files\Oracle\VirtualBox”
VBoxManage modifyhd “C:\Users\Chris\VirtualBox VMs\Windows 7\Windows 7.vdi” --resize 81920
http://www.howtogeek.com/124622/how-to-enlarge-a-virtual-machines-disk-in-virtualbox-or-vmware/
Take a look at CloneVDI from the VirtualBox site... 100% painless!
I am glad you were able to get this done in this manner, but you can (and I did) use the GParted tool for my Windows XP host by following the helpful entry by Eric. To re-iterate/expand on his solution (don't be afraid of the # steps, I'm trying to help newbies here, so there are necessarily more detailed instructions!):
change the size of the virtual hard disk via the VBoxManage modifyhd command, which is well-documented here and in the VirtualBox documentation.
download the GParted-live (http://sourceforge.net/projects/gparted/files/latest/download?source=dlp) or search the internet for GParted-live ISO. The important part is to get the live (.iso) verison, which is in the form of a bootable .ISO (CD) image.
Mount this new .ISO to the CD virtual drive in the host machine's Storage settings
If necessary/desired, change the boot order in the System settings for the host machine, to boot from CD before Hard Disk (alternatively, you can press F12 when it's booting up, and select the device)
start your VM; if you changed the boot order, it will boot to the GParted-live ISO; otherwise press F12 to do this.
do not be afraid or get too confused/wrapped up in the initial options you are presented; I selected all the defaults (booting to GParted default, default key mapping, language (assuming English - sorry for my non-English friends!), display, etc.). Read it, but just press enter at each prompt. With a Windows VM you should be fine with all the defaults, and if you're not, you're not going to break anything, and the instructions are pretty good about what to do if the defaults don't work.
it will boot to a GUI environment and start the GParted utility. Highlight the c: drive (assuming that's the drive you want to increase the size on) and select resize/move.
change to the new size you want in MB (they abbreviate MiB) - just add the new amount available (represented in the bottom number - MiB following) to the middle number. E.g: I changed mine from like 4000 MiB (e.g., 4GB - my initial size) to 15000 MiB (15 GB) because I'd added 10 GB to my virtual disk. Then click OK.
Click Apply. Once it's done you'll have to reboot - for whatever reason my mouse did not work on the desktop icons on the GUI (I could not click exit) so I just closed the VM window and selected reboot. I did not even have to unmount the ISO, it apparently did it automatically.
Let Windows go through the disk check - remember, you just changed the size outside of Windows, so it has no record of this. This will presumably allow it to update itself with the new info. Once it completes and you log in, you'll likely be told that Windows needs to reboot to use your 'new device' (at least in XP it did for me). Just reboot and you are done!
These steps worked for me to increase the space on my windows VM:
Clone the current VM and select "Full Clone" when prompted:
Resize the VDI:
VBoxManage modifyhd Cloned.vdi --resize 45000
Run your cloned VM, go to Disk Management and extend the volume.
Adding a second drive is probably easiest. That would only take a few minutes, and it wouldn't require any configuration, really.
Alternatively, you could create the second, bigger drive, then run a disk imaging utility to copy all data on disk1 to disk2. That certainly shouldn't take a few hours, but it would take longer than just living with two drives.
i used following instructions, its so easy to increase virtual box disk size
http://blog.bhupen.me/1/post/2011/09/increase-virtualbox-disk-size.html
The problem is that the file system on that disk was created when the disk had a certain geometry and you must modify it (while your OS is running on it).
So yes, making the virtual hard disk bigger is not a big issue. The issue is to make the new space available to your OS. To do that, you need tools like parted (Linux) or Partition Magic (Windows).
Taked from here => forums.virtualbox.org/viewtopic.php?p=41118#p41118
You could try something like this (see also Tutorial - All about VDIs: How can I resize the partitions inside my VDI?):
Create a new VDI of the desired size.
Boot GParted Live in a VM with both old and new VDIs attached.
Check in the partition editor (opened automatically after booting) what your old and new disk locations are. (It'll be something like /dev/hda and /dev/hdb.)
Copy contents from old to new disk. This will take a fair amount of time. (Here /dev/hdX is your original disk and /dev/hdY the new one).
dd if=/dev/hdX of=/dev/hdY
Warning: Make sure you do not mix up your input and output disks or you'll wipe all information from your original disk! (if= specifies the input and of= specifies the output.)
Reboot (again with GParted-Live). Now you should be able to increase the Windows partition size on the new disk.
Once you've verified the larger VDI boots Windows fine (and disk size is as you'd expect) you can of course delete the old smaller VDI.
Edit: Instead of rebooting before you resize the partition you should be able to run partprobe and the hit CTRL+R in GParted instead.
After resizing and not being able to view the resizing on my windows XP guest machine, I had to
clone it
resize it with
"VBoxManage modifyhd winxppro\ Clone.vdi --resize 30720"
and everything worked
I saw in other forums that snapshots can interfere for resizing and not being able to remove all snapshots for different errors I got, the only found solution for me was to clone it to remove the snapshots and then resize it, and everything worked. For resizing outside windows, a gparted boot cd that can be found here can help
If you want to resize a fixed size disk, or want to USE the resized disk
VBoxManage modifyhd filename.vdi --resize 99999
won't work. It supports only dynamic disks. Even for a dynamic disk, you'll have to resize the partitions.
Make a backup copy of your VM.
you have to go to VirtualBox manager, File-VirtualMediaManager.
There copy your virtual disk to another one. Make it dynamic while copying.
Go to your machine, Settings - Storage. Link to the new disk.
Return to VirtualMediaManager. Release the old disk.
NOW make resize with the new disk, as
VBoxManage modifyhd filename.vdi --resize 99999.
Resize partitions on the new disk:
download live Linux or live GParted iso.
In VirtualBox manager - settings - Storage - CD's add this iso.
VirtualBox manager - settings - system set loading from CD
launch VM, launch sudo gparted.
right click swap partition, UNSWAP it.
Move right border of the extended partition with swap up to the right.
Move swap to the right
Move left border of the extended partition up to the right
Move right border of YOUR partition up to the right.
Close VM
Remove CD from VM
check how it works
Close VM
remove the old disk in VirtualMediaManager.
Here you are!

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