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Load porteus into RAM and keep settings
Posted: 13 Jun 2016, 09:21
by estario
Hello,
I have installed porteus to my HDD. When the computer boots there is the option to copy the root system to the RAM memory, but if I choose it I get a default unmodified system. I want the option to load the files into RAM and in the same time keep my settings after every restart, having access to files I have modified and so on. Is it possible? Running from RAM speeds the system a lot.
Re: Load porteus into RAM and keep settings
Posted: 13 Jun 2016, 09:55
by estario
Well this is not exactly what I want. I want it to load into RAM by default like Puppy Linux.
Re: Load porteus into RAM and keep settings
Posted: 13 Jun 2016, 10:54
by donald
hi estario
With copy2ram the speed will increase;..compared to a slow boot media like a CD.
You have porteus on a HDD,
In your case, i doubt that "copy2ram" will increase the speed significantly
because the Live filesystem is already running in RAM every time you boot porteus.
The 2nd benefit of "copy2ram" is that one can take out the boot media to free
the cd-drive for example.
however,
a)-- as Evan said, build a session module
or
b)-- adjust the "copy2ram" APPEND line in porteus.cfg so that your changes path is being used.
Re: Load porteus into RAM and keep settings
Posted: 13 Jun 2016, 11:52
by Bogomips
donald wrote:You have porteus on a HDD,
In your case, i doubt that "copy2ram" will increase the speed significantly
because the Live filesystem is already running in RAM every time you boot porteus.
Fine point here requiring clarification, The boot takes a little bit longer as the modules are copied into ram. As I understand it, the modules then go on loops in ram, however without this option the modules go on loops from hdd, in which case there is the added overhead of hdd access.
Re: Load porteus into RAM and keep settings
Posted: 13 Jun 2016, 12:22
by estario
Ok. I get the point now. Thank you.
Re: Load porteus into RAM and keep settings
Posted: 13 Jun 2016, 13:06
by donald
@
Bogomips
of course you're right
now i could argue about what a
significantly speed increase means,.
and it also depends on how much RAM you are willing to be permanently occupied
by the (copied) modules.
only a few, small modules but..
Code: Select all
copy2ram
guest@porteus:~$ free -m
total used free shared buffers cached
Mem: 1960 568 1391 0 52 361
normal
guest@localhost:~$ free -m
total used free shared buffers cached
Mem: 1960 325 1634 0 40 162
Re: Load porteus into RAM and keep settings
Posted: 13 Jun 2016, 15:21
by Bogomips
As
donald has intimated, it's a matter of tweaking the system. Now, for my purposes, am able to get away with Kernel Parameters (cheatcodes):
copy2ram ramsize=30%Code: Select all
guest@porteus:~$ df -h .
Filesystem Size Used Avail Use% Mounted on
aufs 265M 10M 255M 4% /
guest@porteus:~$ free -m
total used free shared buff/cache available
Mem: 880 385 86 91 408 244
Swap: 644 238 406
estario wrote:I want the option to load the files into RAM and in the same time keep my settings after every restart, having access to files I have modified and so on
Kernel Parameters (cheatcodes):
copy2ram changes=EXIT:/porteus represent another option. That way all your changes will be copied at end of session to
/porteus/changes, and loaded from this directory at every restart.
Re: Load porteus into RAM and keep settings
Posted: 13 Jun 2016, 17:30
by fullmoonremix
Salutations...
I'm somewhat scatter brained so I'm not sure how to interpret my results. Am I on the wrong or right track?
APPEND initrd=initrd.xz baseonly copy2ram delay=5 fsck nochanges nomagic norootcopy noswap ramsize=72% timezone=Factory zram=24%
Code: Select all
root@porteus:/home/guest# df -h
Filesystem Size Used Avail Use% Mounted on
aufs 2.8G 92M 2.7G 4% /
root@porteus:/home/guest# free -m
total used free shared buff/cache available
Mem: 3876 534 2306 482 1034 2424
Swap: 930 0 930
Also in /etc/sysctl.config I have "swapiness" set to 10.
"Best Regards"...
