Mailinglist Archive: opensuse (686 mails)

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Re: [opensuse] Added INFO, SSD tuning; was: SSD and smartctl: Percentage ...
* Rajko <rmatov101@xxxxxxxxxxx> [07-06-13 12:36]:
On Sat, 6 Jul 2013 11:05:34 -0400
Patrick Shanahan <paka@xxxxxxxxxxxx> wrote:

To save SSD life, I moved swap to a swap-file on a md0 non-ssd part
some time ago.

It is probably better to have a lot of RAM, so that swap is not used
that often, and move swap back to SSD as difference in access speed is
rather dramatic; you don't have movable parts that need repositioning
and pure transfer speed is few times higher.

8 gb of ram so swap is infrequently accessed and access/transfer speed
hardly ever noticed. Perhaps negligible effect either way so present
method really of little importance.

Large amounts of ram do contribute to sloppy management, ie: many pages
open on firefox although rarely accessed, ...

Private memory: Firefox 1.4 GB
Darktable 1.6 GB
Virtuoso-t 0.5 GB

Other usage: Cache 4.3 GB
Free 0.9 GB
Swap 0.0 GB

Of course if you use hibernation that will tax swap space, but when one
is worn out, after say 2000 writes, you can use different part of the
disk that wasn't used that much and repeat that as long as remain disk
capacity is sufficient for your needs.

Desktop so hibernation not an issue.

The lifetime of a drive is different from individual memory cell
endurance as built in controller will stop using bad block, just the
same way it happens with classic, mechanical, drives. How far this can
go depends on a size of memory that is allocated to hold index of bad
blocks.

Understood, tks

Presently considering increasing ram to 16 GB and removing swap
completely and replacing 120 GB SSD (really adding and reassigning
function of) w/240 GB or 500 GB SSD.

tks,
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