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From Jan Lehnardt <...@apache.org>
Subject Re: Largest CouchDB dbs?
Date Mon, 03 Nov 2008 10:10:32 GMT

On Nov 3, 2008, at 10:34, Jan Lehnardt wrote:

>
> On Nov 3, 2008, at 10:26, Ask Bjørn Hansen wrote:
>
>> I wonder if some of the slowness is from running it through JS?  
>> Perl has an extremely fast JSON parser (JSON::XS), would there be  
>> any potential optimization in using an alternate view language like  
>> that - or is most of the time spent elsewhere?
>
> Another part is the Erlang to JSON conversion that is known to be  
> slow-ish. I don't know
> which side of the conversion weighs more though. We are working with  
> the Erlang
> community and developers to get a C-based JSON encoder into Erlang.  
> Since building
> a view server is relatively straightforward, giving a Perl version a  
> shot is probably worth it.
>
> Which Erlang version are you running? R11B-x is known for causing  
> view-build slowness.
> R12B-3 and R12B-4 are good

In addition: http://wiki.apache.org/couchdb/FrequentlyAskedQuestions#slow_view_building

Cheers
Jan
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