On Mon, Jan 02, 2012 at 07:18:24PM +0100, Gael Varoquaux wrote:
> > BTW, another cleaner, faster way to empty the OS filesystem cache is this:

> > sudo echo 3 | sudo tee /proc/sys/vm/drop_caches

> > [ from http://ubuntuforums.org/showthread.php?t=589975 ]

> That's useful!

And it works much better to clean the cache. The results with this method
differ a bit, and I trust them much more.

I have uploaded the graphes on my blog post draft. The gain in reading
time due to compression seems a bit smaller. I believe this is because
compression was helping the data to stay in cache, but I am still
wrapping my head around the results.

Gael

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