Ubuntu
linux-source-2.6.22 package

  1. Bug #153702
  2. Comment #61

Comment 61 for bug 153702

Revision history for this message
Colin Ian King (colin-king) wrote :

Some experimentation on my Dell Inspiron 530 shows the following:

Booting with controller set to RAID mode:
   - boots OK without the need for the all_generic_ide parameter
   - read speed: 64.0 MB/s
   - write speed: 51.4 MB/s

Booting with controller set to IDE mode:
   - requires all_generic_ide boot parameter to boot correctly
   - read speed: 65.0 MB/s
   - write speed: 51.1 MB/s

Read/Write tests performed on an ext3 journaled file system with a 4 Gb file using dd - I suspect if I was to repeat these tests more scientifically on a raw device the figures between IDE and RAID will be small and insignificant.

I recommend setting the BIOS to RAID mode just so that one does not need the "all_generic_ide" boot option