On 13.12.2013 15:10, Mel Gorman wrote:
Kicked this another bit today. It's still a bit half-baked but it restores the historical performance and leaves the door open at the end for playing nice with distributing file pages between nodes. Finishing this series depends on whether we are going to make the remote node behaviour of the fair zone allocation policy configurable or redefine MPOL_LOCAL. I'm in favour of the configurable option because the default can be redefined and tested while giving users a "compat" mode if we discover the new default behaviour sucks for some workload.
I'll start a 5-day test of this patchset in a few hours, unless you can send an updated one in the meantime. I intend to test it on a rather boring 4GB x86_64 machine that before Johannes' work had lots of trouble balancing zones. Would you recommend to use the default settings, i.e. don't mess with tunables at this point?
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