On cache limits are global...

[jack-mann]

In http://www.imagemagick.org/script/architecture.php

Note, the cache limits are global, meaning if you create several images, the combined resource requirements are compared to the limit to determine the pixel cache storage disposition

Just want to double-check:
given following configuration:

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<policymap>
  <policy domain="resource" name="memory" value="256MiB"/>
  <policy domain="resource" name="area" value="256MB"/>
  <policy domain="resource" name="disk" value="1GiB"/>
</policymap>

If I do the following on the same machine at the same time in two different processes:

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convert a-256-MB.jpg         out1.png &
convert b-256-MB.jpg         out2.png &

then it will likely be that a-256-MB.jpg is converted fast in RAM but b-256-MB.jpg is converted slow using disc?

[snibgo]

No. You are running convert twice. Each is separate to the other.

[jack-mann]

well So each convert gets a pixel cache of 256MB. Thank you for making it clear.