Public bug reported:
I am running Ubuntu 8.04 with latest updates and th "proposed" packages.
When i am loading the 2.6.24-21-generic kernel and rund hdparm -tT i get
something like this:
/dev/sda:
Timing cached reads: 7328 MB in 1.99 seconds = 3674.30 MB/sec
Timing buffered disk reads: 98 MB in 3.05 seconds = 32.11 MB/sec
If i am loading the 2.6.24-21-server kernel i get constantly more or less the
same spee in "Timing cache reads"
but in "Timing buffered disk reads" it is the DOUBLE speed.
I already tried to find the diffrence in the kernel but didn`t find it.
Sind i feel a great improvement in the responsiveness of the generic
kernel (which has preemting enabled and so on) but has has such poor
performance on the disk reads , i would like to have both:)
My system is a Dell D830 Latitude Laptop with 4GB Ram and a WD 160GB hard disk.
If i can help with further information , please let me know.
Thanks for any help.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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disk reads are only half the speed compared to "server" kernel
https://bugs.launchpad.net/bugs/260644
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