I believe that you are using anticipatory. I don't know which one is best for low latency. You can try each one (I think) by adding a boot time option to grub.conf elevator=deadline or elevator=cfq for example. I've been interested in this also, but not enough to try and develop a real test. I suspect you'll have to run for a while to make a real determination. Good luck, and report back. cheers, Mark On 9/28/05, Antonio <debian@xxxxxxxxxxxxx> wrote: > Hi to the list, > > I've compiled a 2.6.12 kernel in my debian system (using the debian > sources). I want to obtain the best latency possible without using the > realtime patch. I've noted that there are three i/o scheduler in the > kernel config: > > Device Drivers ---> > Block devices ---> > IO Schedulers ---> > <*> Anticipatory I/O scheduler > <*> Deadline I/O scheduler > <*> CFQ I/O scheduler > > I've compiled them all as built-in. Which is best for low-latency audio > work? Can I change the scheduler while the system is running (I read it > somewhere)? > > The file /sys/block/hda/queue/scheduler contains: > > noop [anticipatory] deadline cfq > > so which scheduler am I using now? I've tried to echo cfg to that file > but it remains the same. > > I appreciate any information, link or other to make light on the matter. > > Thanks for any answer, > > ~ Antonio > >
