anticipatory or cfq io scheduler?

[Ow Mun Heng]

On Wed, 2004-06-30 at 18:01, Mike Fedyk wrote:
> Stephen So wrote:
> 
> > Hi everyone,
> > 
> > FC2 defaults to the cfq io scheduler but when I compiled my own kernel 
> > (2.6.6), it defaults to the anticipatory scheduler.  I know how to 
> > change this back to cfq in the kernel command line but what I'd like to 
> > know is whether there is any difference between the two schedulers.  Is 
> > one better than the other?  Thanks.
> 
> That was something I was wondering about also, and meant to do a search.
> 
> Hmm, a google search doesn't immediately show *why* it's the default in 
> Fedora, and I haven't been following LKML for the last three months so I 
> don't know how it's been fairing against the deadline and AS schedulers 
> lately.

Hmm.. No idea here actually. But I've always used the io anticipatory schedular.
I've since moved on after reading the link below to the "it's your choice" kernel.
Right now, I've left it at the default "sc" schedular. 

I don't really understand all the options.  If anyone does, please do tell.
And I'm not sure whether I see improvements or otherwise.

http://kerneltrap.org/node/view/3366