# Synapse's architecture is quite RAM hungry currently - we deliberately cache

# a lot of recent room data and metadata in RAM in order to speed up common

# requests. We'll improve this in future, but for now the easiest way to either

# reduce the RAM usage (at the risk of slowing things down) is to set the

# almost-undocumented SYNAPSE_CACHE_FACTOR environment variable. Roughly

# speaking, a SYNAPSE_CACHE_FACTOR of 1.0 will max out at around 3-4GB of

# resident memory - this is what we currently run the matrix.org on. The

# default setting is currently 0.1, which is probably around a ~700MB

# footprint. You can dial it down further to 0.02 if desired, which targets

# roughly ~512MB. Conversely you can dial it up if you need performance for

# lots of users and have a box with a lot of RAM.

SYNAPSE_CACHE_FACTOR=0.1