On Jan 6, 12:55 pm, Albert <vdk...@nlr.nl> wrote:
> After migrating to a new system, most parts work fine and perform as
> before. But the xml template where I use column statistics performs
> very bad: 8 seconds instead of 0.2 seconds on the old system. There I
> use statements like: 'xml.min_resolution(satellite.sensors.minimum
> (:min_resolution))'. Database performance is good, it is the rendering
> which takes a long time. When I remove the column statistics commands
> from the template, performance is like on the old system.
>
I suggest you get ruby-prof and see where the time is going.
Fred
> The new system is using newer versions of the system software (new/
> old): ruby 1.8.7/ruby 1.8.6, rails 2.2.2/rails 2.1.1, Linux
> 2.6.18-92.el5 (both), MySQL 5.0.45 (both).
>
> Any idea what can cause such a problem?
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