Mailinglist Archive: opensuse (783 mails)

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Re: [opensuse] I need more ram, but I can't.
  • From: "Carlos E. R." <robin.listas@xxxxxxxxxxxxxx>
  • Date: Thu, 12 Oct 2017 14:05:34 +0200 (CEST)
  • Message-id: <nycvar.YFH.7.76.1710121348080.5841@Grypbagne.inyvabe>
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On Monday, 2017-09-18 at 15:23 +0200, Carlos E. R. wrote:

Hi,

I need more ram than my 8GiB, but my board doesn't allow it. I use swap,
but Leap is very slow when swapping; I have the feeling that it is
slower than other releases.

So I wonder if there is some type of small hard disk that can be used
for fast swap. SSD? Would it wear out? SSD is typically slow at writing.

A RAM based "disk"? No need for battery backup, unless to keep the
format. Does it exist?


Well, as you may know I replaced my laptop rust hard disk with an SSD (~500GiB), and added a 250 GB SSD to my desktop, which holds the swap and the root filesystem (including /usr this time). I keep all the rust hard disks for home and data.

Although my SATA speed is low for today (3 Gb/s, rev 2), after two or three weeks I must say that I'm impressed: having the swap in SSD has improved my desktop experience awfully.

I guess it is not only the higher read/write speed of the swap, but the seek time. I also guess that swap is very fragmented, or the equivalent term. I mean, the kernel has to recover many memory chunks that are not contiguous, and an SSD shines in seek speed.

Some people note that an SSD for the system improves the application load times, but not "usage" times, once the apps become loaded. True, but some apps like LibreOffice do benefit: it feels faster in use, too.


The only nag I have is that on some boots the laptop BIOS does not see the disk. I have to power off and try boot again. There are no options in the BIOS config, so I have to live with it.

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

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