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authorMarcoFalke <falke.marco@gmail.com>2015-11-06 00:01:51 +0100
committerMarcoFalke <falke.marco@gmail.com>2015-11-12 21:12:35 +0100
commit9c3ee3bf77382aca5717f9ae7163e79e3bf836af (patch)
tree2bb7f9a525c8aea5abc4650dc8c0b1e7ed299f72 /doc/release-notes.md
parentb27e81f115e67bffee2c35c1c96082879160f6e1 (diff)
[doc] Add -maxuploadtarget release notes
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diff --git a/doc/release-notes.md b/doc/release-notes.md
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+++ b/doc/release-notes.md
@@ -168,6 +168,25 @@ a connection to Tor can be made. It can be configured with the `-listenonion`,
`-torcontrol` and `-torpassword` settings. To show verbose debugging
information, pass `-debug=tor`.
+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).
+
0.12.0 Change log
=================