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Anyone got guides or links on how to use RAMdisks in Linux? - Page 2

post #11 of 22
6/25/12 at 4:53pm
There are many reasons why I don't utilize my RAM by copying programs over like that. The main reason being the potential loss of data.
I like the idea 'lloyd' brought up with his link - RAIDing the RAM and disk. However, that defeats the best part of using a RAMdisk - the write speed.

I'm OK with having a fast SSD and having my system utilize RAM as cache.

That is one reason why I would consider a file server with 24GB of RAM. My friend has a dedicated file server with 24GB and it keeps the hard drives from spinning up.

I don't think I answered your question but I'm tired now.
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post #12 of 22
6/25/12 at 8:05pm
Thread Starter 
Quote:
Originally Posted by quadx View Post

There are many reasons why I don't utilize my RAM by copying programs over like that. The main reason being the potential loss of data.
I like the idea 'lloyd' brought up with his link - RAIDing the RAM and disk. However, that defeats the best part of using a RAMdisk - the write speed.
I'm OK with having a fast SSD and having my system utilize RAM as cache.
That is one reason why I would consider a file server with 24GB of RAM. My friend has a dedicated file server with 24GB and it keeps the hard drives from spinning up.
I don't think I answered your question but I'm tired now.

Yeah...it's OK. I think I'm just going to have to avoid it in Linux because it seems way to confusing for me. I'm just upset now that I actually got a lot of my programs in Windows to finally load faster than in Linux. redface.gif
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post #13 of 22
6/26/12 at 6:41am
sorry ... i think i might be confusing ideas. it sounds like this is more like what you are asking for http://techthrob.com/2009/03/02/drastically-speed-up-your-linux-system-with-preload/

i messed with it many many years ago, but had to table it and didn't really get anywhere
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post #14 of 22
6/26/12 at 9:57am
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Quote:
Originally Posted by lloyd mcclendon View Post

sorry ... i think i might be confusing ideas. it sounds like this is more like what you are asking for http://techthrob.com/2009/03/02/drastically-speed-up-your-linux-system-with-preload/
i messed with it many many years ago, but had to table it and didn't really get anywhere

Not what I'm looking for but interesting none the less and something I might just try out. Thanks! Sounds more like those Seagate HDDs with the SSD caches or what I thought Strigi/Nepomuk was supposed to do. I'll see how I can describe it but; what I want is to have my programs installed into RAM along with their caches/temps and then on shutdown saved into an image that is stored on a HDD/SSD to be loaded from on boot/when the OS loads. That's what I have setup in Windows and it has improved a lot of the programs(loading and other things that would have been disk speed limited) though I couldn't control caches/temps as well. So essentially it's like having a volatile SSD only much faster and without worrying about it dying from being used so much. So is there anyway to do that in Linux without too much difficulty (or without annoying you guys by asking for links to or a step by step break down)? redface.gif
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post #15 of 22
6/26/12 at 1:13pm
Quote:
Originally Posted by Rookie1337 View Post

I'll see how I can describe it but; what I want is to have my programs installed into RAM along with their caches/temps and then on shutdown saved into an image that is stored on a HDD/SSD to be loaded from on boot/when the OS loads.
Correct me if I'm wrong, but I think what Shrak linked kind of covers what you want. Just edit what the page shows you so that it covers the programs and files you want and then it should load everything to the ram on start up and copy it back to a harddrive at shutdown.
Quote:
Originally Posted by Shrak View Post

https://wiki.archlinux.org/index.php/Ramdisk
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post #16 of 22
6/26/12 at 7:13pm
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Quote:
Originally Posted by FateousMaximous View Post

Correct me if I'm wrong, but I think what Shrak linked kind of covers what you want. Just edit what the page shows you so that it covers the programs and files you want and then it should load everything to the ram on start up and copy it back to a harddrive at shutdown.

I guess? I'll have to look into but the part that worries me is what I should do since Kubuntu already has a tmpfs running? I mean what bothers me is the tmpfs never seems to be used and it's 2.4GB. Can I use both at the same time (I have 12GBs so I'm not too worried about RAM)? Or should I get rid of tmpfs and go with ramfs; or find some way to make use of tmpfs?
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post #17 of 22
6/27/12 at 9:26am
The max size of a tmpfs just indicates the maximum amount of RAM it will use. It won't use 2.4GB unless you fill it up.
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post #18 of 22
6/27/12 at 9:50am
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Quote:
Originally Posted by gonX View Post

The max size of a tmpfs just indicates the maximum amount of RAM it will use. It won't use 2.4GB unless you fill it up.

OK...I got preload going it seems pretty old (2009 was the last update). With tmpfs does the system automatically manage moving tmp things to tmpfs? I'm not quite sure I fully understand the purpose of it. redface.gif
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post #19 of 22
6/28/12 at 1:28pm
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I was digging around and just out of curiosity....is there any advantage of adding prelink to the mix as well?
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post #20 of 22
7/1/12 at 10:39pm
Prelink is generally used for building a binary so that it includes all of the libaries it needs right within itself, "pre linked", instead of dynamically linked, so you avoid the cost of running around fetching the libraries code every time you start the program. Personally I wouldn't bother with it, at all .. it will be the source of way more problems than it will solve. I don't think anyone uses that anymore, it was a big deal 15 years ago, but these days the juice is not worth the squeeze.

see my last post here again, these threads are somewhat duplicate: http://www.overclock.net/t/1258040/centos-backing-up-folder-running-in-ram/0_40#post_17609778
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Viewsonic 23" 1080P Viewsonic 19" Logitech G510 Corsair AX 1200 
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Case Labs TH10 Logitech G500 Onboard (Linux host) Usb sound adapter (win7 VM) 
AudioOtherOtherOther
2 sets of Logitech speakers (Linux host / win7 VM) 2x Lamptron FC-5 IOGEAR 2 way HDMI KVM Switch Sonnet USB2 controller (win7 VM) 
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CPUMotherboardGraphicsGraphics
2x E5-2687W ASUS Z9PED8-WS EVGA GTX 570 (Linux host) ASUS 7870HD (win7 VM) 
RAMHard DriveHard DriveCooling
64GB G.SKILL 2133 2x Crucial M4 256GB raid1 2x (2x 1TB raid1) 2x Apogee HD  
CoolingCoolingCoolingCooling
2x RX 480 2x MCP 655 RP-452x2 rev1 (deprecated.) 16x AP-29  
CoolingOSOSOS
EK FC 580 Gentoo + around 14 other VMs + windows 7 gaming VM 
MonitorMonitorKeyboardPower
Viewsonic 23" 1080P Viewsonic 19" Logitech G510 Corsair AX 1200 
CaseMouseAudioAudio
Case Labs TH10 Logitech G500 Onboard (Linux host) Usb sound adapter (win7 VM) 
AudioOtherOtherOther
2 sets of Logitech speakers (Linux host / win7 VM) 2x Lamptron FC-5 IOGEAR 2 way HDMI KVM Switch Sonnet USB2 controller (win7 VM) 
View all
  hide details  
Reply
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Overclock.net › Forums › Software, Programming and Coding › Operating Systems › Linux, Unix › Anyone got guides or links on how to use RAMdisks in Linux?