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authorWladimir J. van der Laan <laanwj@gmail.com>2016-06-30 11:01:19 +0200
committerWladimir J. van der Laan <laanwj@gmail.com>2016-07-06 07:45:23 +0200
commitefd1d8339ad9a2bb7a164e7475734a90f6fa034c (patch)
tree219b56a99a71abcfeb14702430185c1e485889d8 /doc/release-notes.md
parent32cab91278651d07a11132b7636dc3d21144e616 (diff)
downloadbitcoin-efd1d8339ad9a2bb7a164e7475734a90f6fa034c.tar.xz
doc: Mention dbcache increase in release notes
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diff --git a/doc/release-notes.md b/doc/release-notes.md
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@@ -41,9 +41,21 @@ report issues about Windows XP to the issue tracker.
Notable changes
===============
-Example item
-----------------
+Database cache memory increased
+--------------------------------
+
+As a result of growth of the UTXO set, performance with the prior default
+database cache of 100 MiB has suffered.
+For this reason the default was changed to 300 MiB in this release.
+
+For nodes on low-memory systems, the database cache can be changed back to
+100 MiB (or to another value) by either:
+
+- Adding `dbcache=100` in bitcoin.conf
+- Changing it in the GUI under `Options → Size of database cache`
+Note that the database cache setting has the most performance impact
+during initial sync of a node, and when catching up after downtime.
bitcoin-cli: arguments privacy
--------------------------------