Re: TRIM support

[Leonidas Spyropoulos <artafinde@gmail.com>]

So any clues for the intel 320 series? I think it doesn't use compressi=
on.

On Sun, Jul 10, 2011 at 10:59 PM, Fajar A. Nugraha <list@fajar.net> wro=
te:
> On Mon, Jul 11, 2011 at 3:58 AM, Leonidas Spyropoulos
> <artafinde@gmail.com> wrote:
>> On Sun, Jul 10, 2011 at 9:33 AM, Chris Samuel <chris@csamuel.org> wr=
ote:
>>> On Sun, 3 Jul 2011 05:45:17 AM Calvin Walton wrote:
>>> This LWN article from 2009 explains why it can be problematic
>>> (especially on SATA drives where TRIM is a non-queued command):
>>>
>>> https://lwn.net/Articles/347511/
>>>
>> So the current problem with TRIM in ATA (and SATA) is that it
>> introduce delays? As long as it keeps your SSD in a good shape it's
>> still better than not having TRIM at all, right?
>
> Not quite.
>
> Sandforce-based SSDs have their own way of reducing writes (e.g. by
> using internal compression), so you don't have to do anything special=
=2E
> Also, AFAIK currently TRIM is useless if the drives are behind a
> hardware raid controller anyway.
>
> My Corsair F60 (on a notebook) is actually MUCH SLOWER with -o discar=
d
> (i.e. writes capped at 100 iops)
>
> --
> Fajar
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