Re: Reports from SSD purgatory
От | Tomas Vondra |
---|---|
Тема | Re: Reports from SSD purgatory |
Дата | |
Msg-id | d32d411b09d8e7c614772de567a94229.squirrel@sq.gransy.com обсуждение исходный текст |
Ответ на | Re: Reports from SSD purgatory (<gnuoytr@rcn.com>) |
Ответы |
Re: Reports from SSD purgatory
Re: Reports from SSD purgatory Re: Reports from SSD purgatory |
Список | pgsql-performance |
On 24 Srpen 2011, 20:48, gnuoytr@rcn.com wrote: > It's worth knowing exactly what that means. Turns out that NAND quality > is price specific. There's gooduns and baduns. Is this a failure in the > controller(s) or the NAND? Why is that important? It's simply a failure of electronics and it has nothing to do with the wear limits. It simply fails without prior warning from the SMART. > Also, given that PG is *nix centric and support for TRIM is win centric, > having that makes a big difference in performance. Windows specific? What do you mean? TRIM is a low-level way to tell the drive 'this block is empty and may be used for something else' - it's just another command sent to the drive. It has to be supported by the filesystem, though (e.g. ext4/btrfs support it). Tomas
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