Re: narraycontroller sort performance problems
Re: narraycontroller sort performance problems
- Subject: Re: narraycontroller sort performance problems
- From: Mike Abdullah <email@hidden>
- Date: Thu, 17 Dec 2009 17:03:41 +0000
As with every performance question. Don't "assume", MEASURE. Fire up Instruments and find out what is using up the CPU.
On 17 Dec 2009, at 15:22, Richard wrote:
> hey
>
> i have an app that performs searches over a network connection. the app uses
> core data to manage all the search requests (currently using an in memory
> store), with an array controller and table view bound to the relevant
> results. a search query produces up to about 10000 results, and they are
> added to the data model in batches of 10 or so. this all works well, until i
> add sorting to the array controller. i then find that the CPU use of the
> application stays at 100% and things go pretty slowly from that point on.
>
> i assume this is because with each new search result that is being retrieved
> and added to the core data model, the array controller is resorting the
> entire collection of search results? can anyone suggest a solution to this
> problem?
>
> thanks
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