On Wed, Mar 4, 2009 at 8:52 AM, J.R. Mauro <jrm8...@gmail.com> wrote:
> Now I haven't tested an SSD for performance, but I know they are > better. Well that I don't understand at all. Is this "faith-based" performance measurement? :-) I have a friend who is doing lots of SSD testing and they're not always better. For some cases, you pay a whole lot more for 2x greater throughput. it's not as simple as "know they are better". >If I got one, this problem would likely subside, but I'm not > convinced that SSDs are durable enough, despite what the manufacturers > say. I haven't seen many torture tests on them, but the fact that > erasing a block destroys it a little bit is scary. I do a lot of > sustained writes with my typical desktop workload over the same files, > and I'd rather not trust them to something that is delicate enough to > need filesystem algorithms to be optimized for so they don't "wear > out". in most cases write leveling is not in the file system. It's in the hardware or in a powerpc that is in the SSD controller. It's worth your doing some reading here. That said, I sure would like to have a fusion IO card for venti. From what my friend is telling me the fusion card would be ideal for venti -- as long as we keep only the arenas on it. ron
