More objects in malloc storage?

Per Buer perbu at varnish-software.com
Tue May 15 20:53:30 CEST 2012


Hi

On Tue, May 15, 2012 at 4:14 PM, Richard Zuidhof <richard at zuidhof.nl> wrote:

> Due to a bug in 3.0.0 or 3.0.1 we had to switch back to file storage
> instead of malloc last summer. Until now I had not bothered to change it
> back after upgrading to 3.0.2 because I thought the increase in efficiency
> would not matter too much for a relatively small server. To my surprise
> there was an unexpected side effect. After I switched the config from 2G
> file to 1500M malloc the number of objects in the Varnish cache increased
> from 58000 to 115000. Less memory, more objects.Is this by design? Can
> anyone explain this?
>

-sfile put objects at 4k boundaries if I recall correctly. If you have many
small objects the overhead is significant.

-- 
Per Buer
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