Comment 100 for bug 119730

Hello,

Just to inform you that I'm also hitting this bug with the Jaunty stock kernel 2.6.28 on an Asus M50sv laptop (intel core2duo T9300, 3gb RAM@667, ICH8 chipset, WesternDigital Caviar Blue 500Go SATAII hard drive) (which by the way is really fast under XP/Vista)

hdparm reports figures around 11000Mb/s for cached reads and 78Mb/s for buffered disk reads,

but actually transferring large amount of data from one partition to another on the same disk, or to an external USB or eSATA external drive is limited to 2.5/3Mb/s.

I've tried various bootparams as found in different posts, blacklisting libata, etc. no sucess so far.