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diff --git a/docs/configuration/advanced.md b/docs/configuration/advanced.md index 7cf962903..6bf57f869 100644 --- a/docs/configuration/advanced.md +++ b/docs/configuration/advanced.md @@ -79,4 +79,36 @@ advanced-rate-limit-requests: 300 # Examples: [8, 4, 9, 0] # Default: 8 advanced-throttling-multiplier: 8 + +# Int. CPU multiplier for the amount of goroutines to spawn in order to send messages via ActivityPub. +# Messages will be batched so that at most multiplier * CPU count messages will be sent out at once. +# This can be tuned to limit concurrent POSTing to remote inboxes, preventing your instance CPU +# usage from skyrocketing when an account with many followers posts a new status. +# +# Messages are split among available senders, and each sender processes its assigned messages in serial. +# For example, say a user with 1000 followers is on an instance with 2 CPUs. With the default multiplier +# of 2, this means 4 senders would be in process at once on this instance. When the user creates a new post, +# each sender would end up iterating through about 250 Create messages + delivering them to remote instances. +# +# If you set this to 0 or less, only 1 sender will be used regardless of CPU count. This may be +# useful in cases where you are working with very tight network or CPU constraints. +# +# Example values for multiplier 2 (default): +# +# 1 cpu = 2 concurrent senders +# 2 cpu = 4 concurrent senders +# 4 cpu = 8 concurrent senders +# +# Example values for multiplier 4: +# +# 1 cpu = 4 concurrent senders +# 2 cpu = 8 concurrent senders +# 4 cpu = 16 concurrent senders +# +# Example values for multiplier <1: +# +# 1 cpu = 1 concurrent sender +# 2 cpu = 1 concurrent sender +# 4 cpu = 1 concurrent sender +advanced-sender-multiplier: 2 ``` |