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Date: Wed, 29 May 2013 13:34:16 -0500
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Subject: Re: "swap" partition leads to instability?
From: Adam Vande More <amvandemore@gmail.com>
To: Warren Block <wblock@wonkity.com>
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Cc: Polytropon <freebsd@edvax.de>,
 Erich Dollansky <erichsfreebsdlist@alogt.com>,
 Michael Sierchio <kudzu@tenebras.com>,
 "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>,
 "M. V." <bored_to_death85@yahoo.com>
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On Wed, May 29, 2013 at 1:05 PM, Warren Block <wblock@wonkity.com> wrote:
> And you don't think the presence of TRIM--where the SSD can actually know
> which blocks are no longer in use--is worthwhile?

As a whole, TRIM is worthwhile.  However when an SSD is
overprovisioned it provides a lot of benefits.  TRIM-less swap in this
case doesn't.  The PE rate of the worst MLC SSD's at this point is
@3000 AFAIK.  Given those figures and average desktop swap rate at my
estimation, prioritizing write endurance on an SSD is not
beneficial(especially with a SanForce).  If you are swapping
continuously something like ZeusRAM may be required.  There are
probably other solutions available as well as other 3rd party ones.
If you are swapping a lot, the best case is usually to add RAM.

--
Adam Vande More