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[doc] Add -maxuploadtarget release notes

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MarcoFalke 2015-11-06 00:01:51 +01:00 committed by Jack Grigg
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doc/release-notes.md
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@ -4,3 +4,21 @@ release-notes at release time)
Notable changes
===============
Reduce upload traffic
---------------------
A major part of the outbound traffic is caused by serving historic blocks to
other nodes in initial block download state.
It is now possible to reduce the total upload traffic via the `-maxuploadtarget`
parameter. This is *not* a hard limit but a threshold to minimize the outbound
traffic. When the limit is about to be reached, the uploaded data is cut by not
serving historic blocks (blocks older than one week).
Moreover, any SPV peer is disconnected when they request a filtered block.
This option can be specified in MiB per day and is turned off by default
(`-maxuploadtarget=0`).
The recommended minimum is 144 * MAX_BLOCK_SIZE (currently 144MB) per day.
A more detailed documentation about keeping traffic low can be found in
[/doc/reducetraffic.md](/doc/reducetraffic.md).