Jeff Mahoney wrote: > Hans Reiser wrote: > > >Did you ever look into my question about device congestion, and whether > >raising that limit would fix the bitmap loading time issue? > > > I haven't really had the time recently. I'll look into it, but it > doesn't change the fact that we're wasting RAM on huge filesystems. > > -Jeff > > -- > Jeff Mahoney > SuSE Labs
Do you understand the argument, namely that it does not do any good to have N spindles if the device congestion limit prevents them from going in parallel? An easy way to test this would be to see if striped devices mount faster than concatenated ones. If yes, then there is crap io scheduler and/or raid device driver code to fix, and it matters more than the original issue at question.
