Comment 117 for bug 131094

hii ppl...greetings and TGIF..

my sincere apologies.. I forgot to mention 1 major boot setting which might influence. Please check the combined_mode= and elevator=deadline options enabled in my kernel. writeback option is for better write performance but i'm sure that it doesn't affect read performance.

title Ubuntu 8.04, kernel 2.6.24-17-server
root (hd0,0)
kernel /boot/vmlinuz-2.6.24-17-server root=UUID=b9f4c570-8b44-413d-bcc8-300f0a0890f9 ro combined_mode=libata clocksource=acpi_pm elevator=deadline rootflags=data=writeback splash vga=795
initrd /boot/initrd.img-2.6.24-17-server

Please try the same. Please note that to make the changes permanent and automatically for all future kernels.. you have modify:
# kopt=root=UUID=b9f4c570-8b44-413d-bcc8-300f0a0890f9 ro combined_mode=libata clocksource=acpi_pm elevator=deadline rootflags=data=writeback
and run update-grub

@tobiaz...anil.. thanks for helping me realize the same.