On Thu, 26 Jun 2008, Merlin Moncure wrote:
In addition there are many different types of flash (MLC/SLC) and the flash cells themselves can be organized in particular ways involving various trade-offs.
Yeah, I wouldn't go for MLC, given it has a tenth the lifespan of SLC.
The main issue is lousy random write performance that basically makes them useless for any kind of OLTP operation.
For the mentioned device, they claim a sequential read speed of 100MB/s, sequential write speed of 80MB/s, random read speed of 80MB/s and random write speed of 30MB/s. This is *much* better than figures quoted for many other devices, but of course unless they publish the block size they used for the random speed tests, the figures are completely useless.
Matthew -- sed -e '/^[when][coders]/!d;/^...[discover].$/d;/^..[real].[code]$/!d ' <`locate dict/words` -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
