Re: SSD optimizations

[Ric Wheeler <ricwheeler@gmail.com>]

On 12/13/2010 01:20 PM, Tomasz Torcz wrote:
> On Mon, Dec 13, 2010 at 05:17:51PM +0000, Paddy Steed wrote:
>> So, no-one has any idea's on how to implement the cache. Would makin=
g it
>> all swap work, does to OS cache files in swap?
>    Quite the opposite.  Too many people have ideas for SSD-as-cache i=
n Linux,
> in non particular order:
> =E2=80=94 bcache
> =E2=80=94 cleancache
> =E2=80=94 btrfs temperature tracking
> =E2=80=94 dm-hstore
> =E2=80=94 dm-cache / flashcache
>
>    Patches are in various states of implementation, some with explici=
t btrfs
> support.  There's no clear winner at this time, but some of above sol=
utions
> are shipped in distro kernels.
>

People are working on quite a few ways that btrfs can leverage SSD devi=
ces. One=20
technique would be to use the SSD as a block level cache, another would=
 be to=20
steer all metadata to the SSD (leaving your bulk data on normal drives)=
=2E

ric


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