Messages in this thread | | | Date | Sun, 17 Jun 2007 00:02:55 -0500 | From | Matt Mackall <> | Subject | Re: [patch 00/14] Page cache cleanup in anticipation of Large Blocksize support |
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On Sat, Jun 16, 2007 at 06:25:00PM -0700, Arjan van de Ven wrote: > > > You: conceptully-new add-on which benefits 0.25% of the user base, provided > > they select the right config options and filesystem. > > > > Me: simpler enhancement which benefits 100% of the user base (ie: includes > > 4k blocksize, 4k pagesize) and which also fixes your performance problem > > with that HBA. > > note that at least 2.6 is doing this "sort of", better than 2.4 at > least. (30% hitrate or something like that).
Is it? Last I looked it had reverted to handing out reverse-contiguous pages.
You can see this by running /proc/pid/pagemap through hexdump.
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