On Wed, Apr 24, 2013 at 1:39 PM, Toby Corkindale < toby.corkindale@strategicdata.com.au> wrote:
SSD performance has improved quickly; an early Kingson SSD of mine only pushes ~85 MByte/s, whereas a later Samsung one can nearly max out a SATA 6Gb connection. The latter also handles far, far more random i/o writes, which shows up in postgresql pgbench results. (Which is more relevant to me than simply writing big files)
In a benchmark I ran I compared a four-disk RAID10 array of 7200rpm sata drives against a single consumer-grade MLC Samsung SSD. Measured in transactions-per-second. Higher numbers are better.
SATA RAID10 array: 698 TPS SSD drive: 7559 TPS
That's an order of magnitude improvement. As far as I'm concerned, SSDs *are* as good as people claim :)
Toby
Sandforce based SSDs may also come with compression built into the drive to reduce wear.