At Thu, 2 Dec 2010 17:43:36 +0100, Joël Bourquard wrote: > First some numbers. Here's the holy grail of Linux VAIO Z performance: > > === Before === > > ~ # hdparm -tT /dev/mapper/isw_xxxxxxxxx_Volume0 > > /dev/mapper/isw_xxxxxxxxx_Volume0: > Timing cached reads: 9266 MB in 2.00 seconds = 4635.03 MB/sec > Timing buffered disk reads: 638 MB in 3.00 seconds = 212.46 MB/sec > > === After === > > ~ # hdparm -tT /dev/md0 > > /dev/md0: > Timing cached reads: 9172 MB in 2.00 seconds = 4587.73 MB/sec > Timing buffered disk reads: 1514 MB in 3.00 seconds = 504.33 MB/sec
So cached reads are slightly slower and buffered reads are twice as fast. Benchmarks aside have you noticed any everyday difference? Simon _______________________________________________ Mailing list: https://launchpad.net/~sony-vaio-z-series Post to : [email protected] Unsubscribe : https://launchpad.net/~sony-vaio-z-series More help : https://help.launchpad.net/ListHelp
