Redis and SSD

[Kirzilla]

Hello,

Anybody have experience using Redis with SSD drives? Is it worth doing
or it's just wasting of money?

Thank you.

[Konstantin Merenkov]

Using experience will be the same because redis is an in-memory
database unless you are using VM.
So I guess for most use-cases it won't make a difference.

Loading/dumping dataset might be faster, I haven't tried.

--
Best Regards,
Konstantin Merenkov

[Кирилл Б.]

Sure, I meant VM mode exactly. Probably SSD will work with swap faster.

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[Salvatore Sanfilippo]

On Sat, Oct 30, 2010 at 12:07 PM, Кирилл Б. <kirz...@gmail.com> wrote:
> Sure, I meant VM mode exactly. Probably SSD will work with swap faster.

VM is really a random-access business, so yes, SSD will help.
But it is required you have support for SSD TRIM command (Linux
supports this) otherwise the write performances of the SSD disk will
really go down fast with the Redis VM access patterns.

Cheers,
Salvatore

--
Salvatore 'antirez' Sanfilippo
http://invece.org

"We are what we repeatedly do. Excellence, therefore, is not an act,
but a habit." -- Aristotele

[Gleicon Moraes]

I've been using it for statistical data gathering and email counting/filtering. Works like a charm, blazing fast for AOF. One of my setups does 3k SETs/INCR and set intersects per second and I barely remember its existence.

I am sharing this server with other applications.

Let me know what metrics you would like me to show you.

g

More cowbell, please !

[Brian Knox]

I will be testing redis on fusionio storage starting this week.  I'll be glad to share my findings with the list.  I plan on testing with the vm on the fusionio, and aof on fiberchannel SAN, and also test with both the vm and aof on SSD.

Brian 

[Ged Wed]

i am also looking at redis sharded on a few SSD's.

Has anyone got any benchmark info for me as i have at the stage of having to decide between redis or another nosql.

ged

[Josiah Carlson]

What do your keys look like? Are you going to be using Redis with
timed saves? Redis with AOF + rewrite? The prototype Redis diskstore?
Redis with VM and some combination of timed saves and/or AOF?

Benchmarks are useless if the benchmark tests something unrelated to
what you are doing. What are you doing?

Regards,
- Josiah

[Josiah Carlson]

Generally speaking, avoid the "vm" portion of Redis, and pay attention
to diskstore.

Regards,
- Josiah

On Fri, Apr 1, 2011 at 11:54 AM, Ged Wed <ged...@gmail.com> wrote:
> i have many different requirements.
> push chat messaging
> analytics OLAP
> OLTP
>
> So i was hunting around to see benchmakrs for what others have gotten.
>
> I am getting the feeling that i am going to have to just run some
> numbers myself and test the paging to disk aspects
>
> Weekend time !!
>
> G