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Linux and SSD Discussions - Page 4

post #31 of 43
I guess my gross over-generalization of SSDs basically needing free space to spread/shuffle around data to prolong life was right? I still feel like I'll be sticking to HDDs for a long time as SSDs just sound so volatile. Need ReRam or RAMdisks with SSD power off dumps.
     
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CPUGraphicsRAMHard Drive
Intel Core m3-6Y30 Intel HD515 8GB 1866DDR3L Micron M600 MTFDDAV256MBF M.2, 256 GB 
CoolingOSOSMonitor
Fanless Win10 Home x64 Kubuntu 16.04 (requires Linux kernel 4.5/4.6) 13.3 inch 16:9, 1920x1080 pixel, AU Optronics A... 
CPUMotherboardGraphicsRAM
AthlonIIX4 640 3.62GHz (250x14.5) 2.5GHz NB Asus M4A785TD-M EVO MSI GTX275 (Stock 666) 8GBs of GSkill 1600 
RAMHard DriveHard DriveHard Drive
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OSMonitorPowerCase
Bodhi Linux x64 Acer G215H (1920x1080) Seasonic 520 HAF912 
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N450 1.8GHz AC and 1.66GHz batt ASUS proprietary for 1001P GMA3150 (can play bluray now!?) 1GB DDR2 
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160GB LGLHDLBDRE32X Bodhi Linux Fedora LXDE 
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post #32 of 43
Quote:
Originally Posted by Rookie1337 View Post

I guess my gross over-generalization of SSDs basically needing free space to spread/shuffle around data to prolong life was right?
Not really. With the greatest of respect, the bit you answered was pretty obvious (everyone - inc myself - made that point too). The real crux of the powerhouses responce was about how existing data is also shuffled around upon re-write - not just the new data.
post #33 of 43
Quote:
Originally Posted by Plan9 View Post

Not really. With the greatest of respect, the bit you answered was pretty obvious (everyone - inc myself - made that point too). The real crux of the powerhouses responce was about how existing data is also shuffled around upon re-write - not just the new data.

Thanks. I know I'm not the brightest crayon in the box so I'm hoping I didn't/don't annoy you too much.

Sorry for clogging the thread...but I glad it powerhouse made sense to you. I'm still a bit confused on it. I thought that whenever something new needed to be added it did the shuffling thing with all data it was told to keep (new and prior); grouped those into close packed/organized pages/blocks; moved what the user wanted kept to an empty/new block/pages; and then marked the old block with the unwanted data for erase/overwrite? Or am I basically repeating everything I already said?
     
CPUGraphicsRAMHard Drive
Intel Core m3-6Y30 Intel HD515 8GB 1866DDR3L Micron M600 MTFDDAV256MBF M.2, 256 GB 
CoolingOSOSMonitor
Fanless Win10 Home x64 Kubuntu 16.04 (requires Linux kernel 4.5/4.6) 13.3 inch 16:9, 1920x1080 pixel, AU Optronics A... 
CPUMotherboardGraphicsRAM
AthlonIIX4 640 3.62GHz (250x14.5) 2.5GHz NB Asus M4A785TD-M EVO MSI GTX275 (Stock 666) 8GBs of GSkill 1600 
RAMHard DriveHard DriveHard Drive
4GBs of Adata 1333 Kingston HyperX 3k 120GB WD Caviar Black 500GB Hitachi Deskstar 1TB 
Optical DriveCoolingOSOS
LG 8X BDR (WHL08S20) Cooler Master Hyper 212+ Kubuntu x64 Windows 7 x64 
OSMonitorPowerCase
Bodhi Linux x64 Acer G215H (1920x1080) Seasonic 520 HAF912 
CPUMotherboardGraphicsRAM
N450 1.8GHz AC and 1.66GHz batt ASUS proprietary for 1001P GMA3150 (can play bluray now!?) 1GB DDR2 
Hard DriveOptical DriveOSOS
160GB LGLHDLBDRE32X Bodhi Linux Fedora LXDE 
OSOSMonitorKeyboard
Kubuntu SLAX 1280x600 + Dell 15inch Excellent! 
PowerCase
6 cells=6-12hrs and a charger 1001P MU17 Black 
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CPUGraphicsRAMHard Drive
Intel Core m3-6Y30 Intel HD515 8GB 1866DDR3L Micron M600 MTFDDAV256MBF M.2, 256 GB 
CoolingOSOSMonitor
Fanless Win10 Home x64 Kubuntu 16.04 (requires Linux kernel 4.5/4.6) 13.3 inch 16:9, 1920x1080 pixel, AU Optronics A... 
CPUMotherboardGraphicsRAM
AthlonIIX4 640 3.62GHz (250x14.5) 2.5GHz NB Asus M4A785TD-M EVO MSI GTX275 (Stock 666) 8GBs of GSkill 1600 
RAMHard DriveHard DriveHard Drive
4GBs of Adata 1333 Kingston HyperX 3k 120GB WD Caviar Black 500GB Hitachi Deskstar 1TB 
Optical DriveCoolingOSOS
LG 8X BDR (WHL08S20) Cooler Master Hyper 212+ Kubuntu x64 Windows 7 x64 
OSMonitorPowerCase
Bodhi Linux x64 Acer G215H (1920x1080) Seasonic 520 HAF912 
CPUMotherboardGraphicsRAM
N450 1.8GHz AC and 1.66GHz batt ASUS proprietary for 1001P GMA3150 (can play bluray now!?) 1GB DDR2 
Hard DriveOptical DriveOSOS
160GB LGLHDLBDRE32X Bodhi Linux Fedora LXDE 
OSOSMonitorKeyboard
Kubuntu SLAX 1280x600 + Dell 15inch Excellent! 
PowerCase
6 cells=6-12hrs and a charger 1001P MU17 Black 
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post #34 of 43
Quote:
Originally Posted by Rookie1337 View Post

Thanks. I know I'm not the brightest crayon in the box so I'm hoping I didn't/don't annoy you too much.
lol don't be silly.
I'm not really sure I explained myself all that well anyway. I understood the way how data is load balanced (so to speak), but didn't think writing new data alone would be enough to warrant the 30% space - but as it's since been pointed out, it's not just new data that is load balanced.
Quote:
Originally Posted by Rookie1337 View Post

Sorry for clogging the thread...but I glad it powerhouse made sense to you. I'm still a bit confused on it. I thought that whenever something new needed to be added it did the shuffling thing with all data it was told to keep (new and prior); grouped those into close packed/organized pages/blocks; moved what the user wanted kept to an empty/new block/pages; and then marked the old block with the unwanted data for erase/overwrite? Or am I basically repeating everything I already said?
I'm really not sure what you're saying there. sorry :-/
post #35 of 43
Quote:
Originally Posted by parityboy View Post

@powerhouse
I used the term "Copy on Write" precisely because the new data isn't written to the same location on the SSD as the old data, unlike a hard disk. I know that systems like ZFS do CoW at the filesystem level, which is indeed a different thing. In fact the behaviour of NAND is a cause for concern for security people precisely because the data isn't overwritten in the same way as a hard disk.
CoW might not be the best term to use for SSDs, but it's the only term I could think of that would fit. tongue.gif

I'm NOT an expert, just someone who read a little about it trying to understand the stuff I'm using.

"Copy on write" is fine with me smile.gif.

You're absolutely right about security concerns - read about it and even found somewhere explanations on how to read the deleted pages.

SSDs are great and it really speeds up my PC. Of course I have enough RAM to probably never need swap space, but just in case i put my swap partition on a HDD.

I'm not too concerned about SSD life time, but cautious. If some precautions can improve life time and performance over time, I will try to implement them.
post #36 of 43
So far my SSD is doing fine. I wish I had a bigger SSD - 120GB isn't enough to hold Linux and a Windows 7 domU (Xen talk for VM). I guess I will be spending money on a 250GB SSD drive soon mad.gif. Windows takes up a lot of disk space. Well, we all know it's bloatware.

Just for the curious: Running Windows in a domU with GPLPV disk driver gives me a 7.8 on the Windows Experience Index (mind you, 7.9 is the maximum). In practice, everything is almost instant. If I get the time I will benchmark. Lot's of RAM helps, though.
post #37 of 43
Quote:
Originally Posted by powerhouse View Post

So far my SSD is doing fine. I wish I had a bigger SSD - 120GB isn't enough to hold Linux and a Windows 7 domU (Xen talk for VM). I guess I will be spending money on a 250GB SSD drive soon mad.gif. Windows takes up a lot of disk space. Well, we all know it's bloatware.
Just for the curious: Running Windows in a domU with GPLPV disk driver gives me a 7.8 on the Windows Experience Index (mind you, 7.9 is the maximum). In practice, everything is almost instant. If I get the time I will benchmark. Lot's of RAM helps, though.

I run Win7 inside a VBox VM and found it ran quicker than on bare metal too. VBox isn't even a good virtualisation suite either. laugher.gif
post #38 of 43
Quote:
Originally Posted by Plan9 View Post

I run Win7 inside a VBox VM and found it ran quicker than on bare metal too. VBox isn't even a good virtualisation suite either. laugher.gif

Good to hear Vbox is doing so well with Win7. I found Vbox very easy to setup and use, but unfortunately it doesn't do VGA passthrough which I need to let Win7 communicate directly with my graphics adapter. Xen is the only solution I know of that works. I don't know why the KVM guys dropped this 2 years ago.

Xen can be a real pain to set up with PCI / VGA passthrough, but when it works you don't want to look back, or at anything else. I'm waiting to see Xen 4.2 in the Ubuntu/Linux Mint repository - that should improve things even further. Right now I'm running Xen 4.1.2 and it works just fine.
post #39 of 43
Quote:
Originally Posted by powerhouse View Post

Good to hear Vbox is doing so well with Win7. I found Vbox very easy to setup and use, but unfortunately it doesn't do VGA passthrough which I need to let Win7 communicate directly with my graphics adapter. Xen is the only solution I know of that works. I don't know why the KVM guys dropped this 2 years ago.
Xen can be a real pain to set up with PCI / VGA passthrough, but when it works you don't want to look back, or at anything else. I'm waiting to see Xen 4.2 in the Ubuntu/Linux Mint repository - that should improve things even further. Right now I'm running Xen 4.1.2 and it works just fine.

Indeed. I only use Vbox because it's easy. It's definitely not the best out there.

I've considered giving LVM a go as I really do need real time support for my Win7 install and Vbox, as great as it is, isn't quite there yet for real time audio
post #40 of 43
Quote:
Originally Posted by Plan9 View Post

Indeed. I only use Vbox because it's easy.

same here. i don't need anything more and it is a piece of cake to set up and use
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