Re: page fault scalability (ext3, ext4, xfs)

On Wed, Aug 14, 2013 at 4:06 PM, Theodore Ts'o [off-list ref] wrote:

On Wed, Aug 14, 2013 at 01:50:02PM -0700, Dave Hansen wrote:

quoted

Would a plain old fallocate() do the trick, or does it actually need
zeros written to it?

It would be better to write zeros to it, so we aren't measuring the
cost of the unwritten->written conversion.

At the risk of beating a dead horse, how hard would it be to defer
this part until writeback?

--Andy