On Fri, 3 Apr 2009, Jeff Garzik wrote:Yeah, it's a no-name SSD.
I've attached 'hdparm -I' in case anyone is curious. It's from newegg.com, so
nothing NDA'd or sekrit.
Hmm. Does it do ok on the "random write" test? There's a few non-intel controllers that are fine - apparently the newer samsung ones, and the one from Indilinx.
But I _think_ G.SKILL uses those horribly broken JMicron controllers. Judging by your performance numbers, it's the slightly fancier double controller version (ie basically an internal RAID0 of two identical JMicron controllers, each handling half of the flash chips).
Try a random write test. If it's the JMicron controllers, performance will plummet to a few tens of kilobytes per second.
Version 1.03c ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
bd.yyz.us 8000M 28678 6 27836 5 133246 12 5237 10
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++
bd.yyz.us,8000M,,,28678,6,27836,5,,,133246,12,5236.6,10,16,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++