I believe that you are using anticipatory.
Yes, your using the one in brackets
I don't know which one is best for low latency.
I don't either, but judging from this it might be anticipatory:
http://kerneltrap.org/node/616.
I really doubt (from an ordinary audio users POV) you'll see
that much difference in latency tough. I'd rather make sure my hdparm
values are correct.
You can try each one (I think) by adding a boot time
option to grub.conf
elevator=deadline
or
elevator=cfq
or you can change the running scheduler w/o rebooting by doing
echo deadline > /sys/block/hda/queue/scheduler
For latency, I'd run the latest 2.6.13 (it's .2 now).
2.6.12 had some bugs in its rlimits code that's fixed in 13.
Also make sure you have the patched PAM and an adusted
/etc/security/limits.conf to make proper use of rlimits.
- Peder