Re: SSD + RAID

2009/11/13 Greg Smith <greg@2ndquadrant.com>:
> As far as what real-world apps have that profile, I like SSDs for small to
> medium web applications that have to be responsive, where the user shows up
> and wants their randomly distributed and uncached data with minimal latency.
> SSDs can also be used effectively as second-tier targeted storage for things
> that have a performance-critical but small and random bit as part of a
> larger design that doesn't have those characteristics; putting indexes on
> SSD can work out well for example (and there the write durability stuff
> isn't quite as critical, as you can always drop an index and rebuild if it
> gets corrupted).


Here's a bonnie++ result for Intel showing 14k seeks:
http://www.wlug.org.nz/HarddiskBenchmarks

bonnie++ only writes data back 10% of the time.  Why is Peter's
benchmark showing only 400 seeks? Is this all attributable to write
barrier? I'm not sure I'm buying that...

merlin