Messages in this thread |  | | From | Christoph Rohland <> | Subject | Re: dbench on tmpfs OOM's | Date | Tue, 17 Sep 2002 09:57:18 +0200 |
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Hi Hugh,
On Tue, 17 Sep 2002, Hugh Dickins wrote: > What I never did was try GFP_HIGHUSER and kmap on the index pages: > I think I decided back then that it wasn't likely to be needed > (sparsely filled file indexes are a rarer case than sparsely filled > pagetables, once the stupidity is fixed; and small files don't use > index pages at all). But Bill's testing may well prove me wrong.
I think that this would be a good improvement. Big database and application servers would definitely benefit from it, desktops could easier use tmpfs as temporary file systems.
I never dared to do it with my limited time since I feared deadlock situations.
Also I ended up that I would try to go one step further: Make the index pages swappable, i.e. make the directory nodes normal tmpfs files. This would even make the accounting right.
Greetings Christoph
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