Comment 81 for bug 576601

@Payall: on Mac mini 2010 with internal 320Gb SATA drive, performance is low, about a tenth of expected. About 7 MB/sec on Ubuntu 10.04 using the above kernel, versus about 55 MB/sec on Mac OS X as shipped. Better than the 0 MB/sec before this fix was available.

(Test method on Ubuntu; ensure system is quiescent, "apt-get install pv" then "pv /dev/sda > /dev/null" and read the display. Test method on Mac OS X; create a large file, reboot, "time cat file > /dev/null", note the file size and the duration, divide out the result.)