Mailinglist Archive: opensuse (794 mails)

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Re: [opensuse] Get an SSD just for swap?
  • From: "Carlos E. R." <robin.listas@xxxxxxxxxxxxxx>
  • Date: Tue, 28 Nov 2017 15:56:03 +0100 (CET)
  • Message-id: <alpine.LSU.2.21.1711281547040.31979@Telcontar.valinor>
Hash: SHA1

On Tuesday, 2017-11-28 at 09:57 +0200, Dave Plater wrote:
On 27/11/2017 00:18, Mikhail Ramendik wrote:

Here's another possibility, I also have a system slowdown with swap, my single sata drive is quite slow due to the mb only having sata 2. I bought a 1T usb drive with usb 3 capabilities and then added a usb 3 adapter card. This gives me a much better transfer rate than sata 2 and just using a swapfile instead of my swap partition fixes the slowdowns. I would use it as for permanent swap partition except I left the microsoft partition and it now has to much important data to risk any repatrtitioning.

Yes, you about double the transfer speed, at least of big blocks. The problem is "fragmentation" which causes seeking and head movements, which are measured in milliseconds for rotating disks. On SSD there is no such issue.

I use swap SSD on sata 2 and the speed advantage is huge. It would be better on sata 3, of course, or usb3.

What I saw often on rotating rust was that the swaping speed was much lower than what the disk allowed, in theory.

- -- Cheers,
Carlos E. R.
(from openSUSE 42.2 x86_64 "Malachite" at Telcontar)

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