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 Forum index » Advanced Topics » Hardware
speed difference USB 2.0 vs 3.0?
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mikeschn


Joined: 27 Jul 2012
Posts: 17

PostPosted: Fri 07 Sep 2012, 12:33    Post_subject:  speed difference USB 2.0 vs 3.0?  

For those of you guys running Puppy on a USB stick, is there a big difference when booting/saving between a USB2.0 and USB3.0?

and if you happen to know, how does the speed of the CD compare to the USB?

Thanks
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ravensrest


Joined: 22 Feb 2008
Posts: 321
Location: Hood Canal, WA

PostPosted: Fri 07 Sep 2012, 15:03    Post_subject:  

Don't know how much faster USB3 is than USB2, but I boot using USB2 from a 16Gig stick and it is significantly faster than CD.
BS
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linuxbear

Joined: 18 Apr 2009
Posts: 621
Location: Las Vegas, Nevada, USA

PostPosted: Fri 07 Sep 2012, 15:11    Post_subject: Re: speed difference USB 2.0 vs 3.0?  

mikeschn wrote:
For those of you guys running Puppy on a USB stick, is there a big difference when booting/saving between a USB2.0 and USB3.0?

and if you happen to know, how does the speed of the CD compare to the USB?

Thanks


Yes

http://www.itworld.com/hardware/98798/usb-30-separating-hype-reality
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mikeschn


Joined: 27 Jul 2012
Posts: 17

PostPosted: Fri 07 Sep 2012, 18:12    Post_subject:  

Cool! Thanks guys. So I guess there's no need to run out and buy a machine that has USB3.0 Rolling Eyes Laughing

Mike...
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sunburnt


Joined: 08 Jun 2005
Posts: 5037
Location: Arizona, U.S.A.

PostPosted: Fri 07 Sep 2012, 21:57    Post_subject:  

CD is pretty slow by comparison these days, but DVD is much faster.
And BlueRay I don`t have a drive yet. They`re even faster I`m sure.

The USB3 spec. is much faster than USB2, but the device is the speed limit.
I`ve had USB2 flash drives that were not much faster than USB1.1

It`s like the SATA interface, they keep making it faster and faster.
But 3.5 inch H.D.s are still the same speed ( approximately 60 MBs ).
S.S.D.s are able to make use of SATA`s blazing interface speeds.
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dk60902


Joined: 26 Sep 2010
Posts: 223
Location: In front of my computer

PostPosted: Fri 07 Sep 2012, 22:53    Post_subject:  

Slacko, Lucid, and Saluki are 130 MB or less, savefile 512 MB for me, which means my computer needs to load ~650 MB into RAM, as I do frugal installs. USB 2.0 is up to 480 mb/sec and USB 3.0 is up to 5.0 GB/sec. Does that mean that USB 2.0 will load 650 1.5 secs into RAM, and USB 3.0 will load in ~ 0.13 sec into RAM, assuming maximum speeds? For a small distro like Puppy, is going to USB 3.0 really going to make a significant difference? Has someone installed the same Puppy on a USB 2.0 stick and USB 3.0 stick and booted from the same computer (obviously plugging the 2.0 stick into a 2.0 port and the 3.0 into a 3.0 port)? What has been your experience?

I just bought a couple USB 3.0 sticks, and I might buy a USB 3.0 PCI card to upgrade my system.

I had a couple computers that I sold recently that had Puppy frugally installed (slacko and lucid), and it loaded much more quickly than with a CD. The savefile was saved on the HD for both the HD and CD boot. I also booted from USB 2.0, and it was significantly faster than CD. However, saving the savefile to USB seemed fairly slow on my system.

_________________
HP P6115y/AMDX2 2.5 GHz/8GB RAM/750GB/WinVista Home Prem SP2 64 bit Dual Monitor (Saluki23 w/ Compiz, Slacko533 PAE w/ Compiz on USB stick)
Compaq Presario 2195us 1GB RAM Lupu 5.2.8.5 off CD/Retired WinXP 4/8/14
Nexus 5 (rooted), Lumia 820 WP8.1
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sunburnt


Joined: 08 Jun 2005
Posts: 5037
Location: Arizona, U.S.A.

PostPosted: Sat 08 Sep 2012, 22:53    Post_subject:  

The save file is the biggest file in Puppy, so slow to save of course.

I`m trying to setup a transparently compressed Save file for Puppy.
It`d run and save/restore faster, and take less ram and USB space.

e2compr is light and simple and probably a good choice.

Btrfs is the new Ext4 replacement, and does on-the-fly compression.
It will be the next main stream Linux FS very soon, a good choice too.

Both require compiling a new kernel and some of the FS tools.
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