The tag has no usage guidance.

learn more… | top users | synonyms

1
vote
1answer
30 views

How to keep the file in RAM

I have a laptop with Linux Slackware. When it's working on battery saving a file to hard drive takes around a second. When I'm writing code I waste a lot of time saving the files. I have about 2 GB ...
0
votes
0answers
20 views

How can writing speed equal to reading's over nbd and ram disk

My testing is under two nodes whose communication is over nbd,and each node uses ram disk as local storage.The result is that reading speed can reach the bandwidth 6GB/s,while writing speed is only ...
0
votes
0answers
38 views

why writing under ram disk is slower than reading?

I have been running a test to verify the performance improvement with ram disk. I used tmpfs provided by Linux kernel,but writing speed is slower than reading. Who had run similar tests and what's ...
-4
votes
2answers
114 views

How can I forbid the Linux kernel from accessing a certain RAM disk? [closed]

Can anyone tell me if the Linux kernel has access to RAM Disks and if so, how can we forbid it? I want to have a RAM Disk that I'm the only one who has access and can change the information, and I ...
3
votes
2answers
347 views

Debian 8 KVM Guest - Loading initial ramdisk

I have updated my KVM management script for Ubuntu 14.04 KVM hosts to support debian 8 guests. After a manual installation (preseed script does not work yet), I am stuck with the the following message ...
0
votes
1answer
36 views

how to add application to initrd.gz

I have an initrd.gz (from linux parag*n live cd) I want to edit the file inside and add app like apache,ophcrack,etc. So far I've done extracting by following these step ...
0
votes
0answers
41 views

Boot hangs at 'initializing ramdisk'

On my laptop, any linux distribution get's stuck at 'initializing ramdisk' when booting. I tested this with Ubuntu Gnome, Debian, Linux Mint and Fedora. Windows 8 works properly, so it isn't a ram/hdd ...
1
vote
1answer
121 views

Kernel's cached memory can't be freed, even dropping caches

All host's memory is cached and there's no way it can be freed. /dev/ram1 is used for storing testing files, but after each build we run freeramdisk. $ freeramdisk /dev/ram1 $ echo 3 > ...
2
votes
3answers
1k views

Is there a linux OS that can be loaded entirely into RAM?

I have 32 GB of memory in my PC. This is more than enough for a linux OS. Is there an easy to use version of Linux (Ubuntu preferably) that can be booted via optical or USB disk and be run completely ...
0
votes
1answer
1k views

How do I create a RAM disk on Linux Mint?

I am running a package that adds data to the end of 140–300 files each time through the process. I'm thinking of moving the process to a RAM disk, and using rsync to copy it back when done. My goal ...
0
votes
0answers
134 views

Install entire Linux OS to RAM disk

How would I install an entire Linux distro to a RAM disk, not just the kernel and modules with mkinitrd? Would I just need to make a huge initrd image? If so, how would I do that? thanks
6
votes
1answer
179 views

Can you throttle the bandwidth to a tmpfs based ramdisk?

I created a ramdisk using tmpfs as follows: sudo mount -t tmpfs -o size=1024m tmpfs /myramdisk I was looking into cgroup blkio subsystem bandwidth limits "read_bps_device" and "write_bps_device" ...
2
votes
3answers
372 views

Linux speed up by moving files to ramdisk at start

I have more than enough ram in my computer (8GB), which hardly gets used. In the most cases my desktop and apps use up in 2-3GBs out of it, on the other hand I do not have an SSD. My system is 64bit ...
0
votes
0answers
99 views

Linux loading stuck at "initializing RAMDISK'

I had dual booted my machine with windows 8 and Linux mint 17. Now, win8 is working fine but when I boot Linux Mint it shows nothing in normal mode and loading is stuck at initializing ramdisk in ...
10
votes
2answers
863 views

Reserve fixed RAM memory region as a block device ( with a given start physical address)

There have been a lot of questions about RAM Disks and I am aware of ramfs and tmpfs which allow the use of ram as a block device. However my interest is in using a fixed memory address range as a ...
2
votes
1answer
1k views

How Linux kernel 3.x manage ramdisk as block device?

I need a block device in RAM. I built a 3.x kernel and added the RAM block device driver. The number of RAM block device drive is 16 (by default) but when the kernel boots there is no ramx in ...
1
vote
2answers
212 views

Linux 3.x init ramdisk embedded in bzImage?

Is the initial ramdisk embedded into the bzImage? How to load an rootfs.cpio as a ramdisk and switch the root?
1
vote
0answers
121 views

Display boot splash on ramdisk only system

I'm working on a kiosk system with the root file system loaded into RAM. One of the requirements is that the boot process output should be completely hidden from the user. I've already managed to set ...
1
vote
1answer
90 views

How to download original ramdisk file to the computer? [closed]

Linux embedded, is it possible to download original ramdisk file to the computer, to get source code? Access via SFTP. U-boot 1.2.0 Kernel command line: root=/dev/mtdblock3 ...
0
votes
2answers
296 views

Ramdisks in OpenSuse 13.1

I've just installed OpenSuse 13.1, and noticed 5 tmpfs ramdisks in the partitioner, mapped to /dev/shm, /run, /sys/fs/cgroup, /var/lock and /var/run. I don't remember seeing these ramdisks in the ...
2
votes
3answers
227 views

Why are there internet utilities in my initial ramdisk?

I have a fairly standard initial ramdisk created using mkinitcpio. I'm on Arch GNU/Linux. A while ago I got dropped to a rescue shell and poked around in the /bin of the ramdisk to see what was ...
2
votes
1answer
315 views

Missing /dev/ram0 /dev/ram1 and /proc/kcore

I have been experimenting with etckeeper to store different snapshots of /etc in a git repo. I have cloned a working /etc in /etc-1 of a clean VPS and I have restored metadata with etckeeper, the I ...
2
votes
2answers
368 views

du on ramdisk displays 3GB less than df

I understand there's often a some discrepancy between du and df but when I du my ramdisk it occupies 13G, whereas df shows it's using 16GB. This seems quite a big difference. Is this normal? ...
2
votes
1answer
1k views

Measurement of free ram through /proc/meminfo with ramdisk (initrd)

I am booting a disk image via PXE, it is a full system on an initrd ramdisk. I would like to measure the actual free memory of the system (not including buffers and file system caching). I was told ...
2
votes
2answers
626 views

why is filesystem intensive script not faster on ram disk

I have a script which creates a lot of files and directories. The script does black box tests for a program which works with a lot of files and directories. The test count grew and the tests were ...