On Thu, 2007-06-21 at 16:08 -0700, Linus Torvalds wrote: > > On Thu, 21 Jun 2007, Matt Mackall wrote: > > > > Perhaps we want to throw some sliding window algorithms at it. We can > > bound requests and total I/O and if requests get retired too slowly we > > can shrink the windows. Alternately, we can grow the window if we're > > retiring things within our desired timeframe. > > I suspect that would tend to be a good way to go. But it almost certainly > has to be per-device, which implies that somebody would have to do some > major coding/testing on this.. > > The vm_dirty_ratio thing is a global value, and I think we need that > regardless (for the independent issue of memory deadlocks etc), but if we > *additionally* had a per-device throttle that was based on some kind of > adaptive thing, we could probably raise the global (hard) vm_dirty_ratio a > lot.
I just did quite a bit of that: http://lkml.org/lkml/2007/6/14/437 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
