Andrew Morton wrote:

On Thu, 26 Jul 2007 15:53:37 +1000 Nick Piggin [off-list ref] wrote:

quoted

Not that I want to say anything about swap prefetch getting merged: my
inbox is already full of enough "helpful suggestions" about that,

give them the kernel interfaces, they can do it themselves ;)

It is a good idea if we can give enough to get started. Then if
they run into something they really need to do in the kernel, we
can take a look.

Page eviction order / prefetch-back-in-order might be tricky to
expose.

quoted

so I'll
just be happy to have a look at little things like updatedb.

Yes, that is a little thing.  I mean, even if the kernel's behaviour
during an updatedb run was "perfect" (ie: does what we the designers
curently intend it to do (whatever that is)) then the core problem isn't
solved: short-term workload evicts your working set and you have to
synchronously reestablish it.

Sure, I know and I was never against swap (and/or file) prefetching to
solve this problem. I'm just saying, I'm staying out of that :)

-- 
SUSE Labs, Novell Inc.

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