Andi Kleen wrote:
Eric Sandeen <sandeen@xxxxxxx> writes:
That is basically true, yes. There is a non-free GRIOV2 product in
use with CXFS, but for your purposes, I think it is safe to say that
there is no standalone GRIO equivalent on Linux.
It's not. In fact it's a standard feature now.
Well, I stand corrected then :)
The CFQ2 IO scheduler has IO priorities settable with ionice, including
a RT class with 8 priorities.
Well, that still sounds a bit different from the original irix GRIO
grio - guaranteed-rate I/O
Guaranteed-rate I/O (GRIO) refers to a guarantee made by the system to a
user process indicating that the given process will receive data from a
system resource at a predefined rate regardless of any other activity on
While 2.6 can set priorities on IO, it does not offer a hard guaranteed IO
rate, does it? Now, I'm not necessarily saying one scheme is necessarily
better or worse than the other, but they are different, I think.