Hi David,

I think we had you disable all the search indexes to speed loading.

Now you're searching. :-)

The answer in this case is to enable a case-sensitive index. But rather than 
add indexes one at a time, do you know what kind of searches you need to run? 
That will help us to recommend the minimal index configuration so you can have 
fast loads and fast searches.

Kelly

Message: 3
Date: Mon, 11 Jul 2011 19:35:10 +0000
From: "Lee, David" <[email protected]>
Subject: Re: [MarkLogic Dev General] Is "INFO"  magic   in      search:search
        ?       bad     performance
To: General MarkLogic Developer Discussion
        <[email protected]>
Message-ID:
        <31395bf86e0a454f832b8f8824ed6bda034...@exmb-pp03.corp.epocrates.com>
Content-Type: text/plain; charset="us-ascii"

I narrowed this down.
I changed the data to be single documents instead of a top-level with a 
fragment-root.
The effects were not significantly different.

Adding 'unfiltered' made the results instant.
Similarly adding 'case-insensitive' made the results instant.

So what I think is going on here is that "INFO" matches case-insensitively to a 
huge number of fragments but case-sensitively to none.   Thus the unfiltered 
search has to go through the entire list by loading the fragments and doing the 
equivilent of a cts:contains() to find no results.

If "INFO" matched more results case-sensitive then the search could have 
terminated quicker as I see with other such search of words that have both case 
sensitive and insensitive matches.

Suggestions to improve this usably ? 

A) add a case-sensitive index ?
B) Use case-insensitive matching (might be the better GUI in this case).
C) Use un-filtered searches but then I can get a HUGE number of false-positives 
... running cts:contains on the top 10 hits will likely find none so this is 
not usable.

Other ideas ?


----------------------------------------
David A. Lee
Senior Principal Software Engineer
Epocrates, Inc.
[email protected]
812-482-5224
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