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fix contradicting documentation and say a bit about the resident size… #9133

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Merged
cmcfarlen merged 1 commit into from
Oct 11, 2022
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fix contradicting documentation and say a bit about the resident size… #9133

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2 changes: 1 addition & 1 deletion doc/admin-guide/storage/index.en.rst
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Expand Up @@ -130,7 +130,7 @@ To change the RAM cache size:

#. Set the variable :ts:cv:`proxy.config.cache.ram_cache.size`
to specify the size of the RAM cache. The default value of ``-1`` means
that the RAM cache is automatically sized at approximately 1MB per
that the RAM cache is automatically sized at approximately 10MB per
gigabyte of disk.

#. Restart Traffic Server. If you increase the RAM cache to a size of
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4 changes: 4 additions & 0 deletions doc/developer-guide/cache-architecture/architecture.en.rst
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Expand Up @@ -174,6 +174,10 @@ change, neither does this memory requirement, so |TS| does not consume more
memory as more content is stored in the cache. If there is enough memory to run
|TS| with an empty cache there is enough to run it with a full cache.

The resident size of the directory for a cache volume is generally <0.2% of the
volume size. The exact memory allocated for the directory of a volume can be
seen if traffic_server is run with the 'cache_init' debug tag enabled.

.. figure:: images/cache-directory-structure.png
:align: center

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