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From "Yonik Seeley" <>
Subject Re: Big slowdown with phrase queries
Date Thu, 03 Jul 2008 23:35:54 GMT
On Thu, Jul 3, 2008 at 7:05 PM, Chris Harris <> wrote:
> Ok, I only have one segment right now, so I've got one of each of these:
> .tis file: 730MB
> .frq files: 9KB
> .prx file: 26KB

That's pretty much impossible (way too small).  Double check those numbers.

> If I'm understanding you (and Mike) properly, then even though it's
> the prx file that contains the actual position info, you can't get to
> that info quickly unless the tis file is also cached in RAM by the OS.


> I have to admit I don't know that much about OS disk caching. Can I
> more or less pretend that the OS uses a least recently used (LRU)
> algorithm?

Pretty much.
How much physical RAM do you have?


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