On 02/14/2012 03:13 AM, Warpme wrote: > In my SSD tests I replaced OS+DB drive to SSD (Samsung 830 series, 64G > model). > SSD was with Ext4, discard, noatime, barriers=off. CHS aligned to 32/32. > FWIW, with an SSD, you may well be able to enable barriers without getting the huge performance penalty. Mike