On 09/08/2011 03:28 PM, Dennis Jacobfeuerborn wrote: > On 09/07/2011 10:55 PM, Jerry Geis wrote: >> I grabbed a new SSD M4-CT064M4SSD2 from Crucial. >> >> I am disappointed. I stuck the unit in an Atom machine (zotac) with >> CentOS 6 on the disk. >> It really doesn't "feel" faster than the previous 5400 RPM drive that >> was in it. >> >> The SSD is giving me (in the zotac running centos 6): >> hdparm -t /dev/sda >> /dev/sda: >> Timing buffered disk reads: 298 MB in 3.00 seconds = 99.30 MB/sec > > Not sure about Centos 6 but I just got a new System with a Crucial M4 128G > disk and and the difference to my previous non-ssd system is *huge*: > > /dev/sda: > Timing buffered disk reads: 700 MB in 3.00 seconds = 233.11 MB/sec > > And that's just the throughput. What really is amazing is the reduced > latency which makes the desktop fly. > > 100mb/s sound really broken though. Even the slowest ssd drives should give > you more than that. Try installing Fedora 15 (what I'm using right now) and > if you see the same performance then it might be a hardware problem. If the > performance is much better under Fedora 15 though then there might be an > issue with Centos 6 and ssd's (though I'm not sure what that could be in a > simple read-only benchmark). This just occured to me: are you maybe cpu bound? Since you use an atom based system maybe your system simply cannot deliver the full performance of the drive? Regards, Dennis