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The following commit(s) were added to refs/heads/develop by this push:
new 12ccd50 [RIP-9] Add the system configuration option doc: Direct
ByteBuffer memory size
new a83c621 Merge pull request #1044 from Crab2died/develop
12ccd50 is described below
commit 12ccd50806bafae2d8c4a6fe0cff668a96ecb8db
Author: 螃蟹以死 <[email protected]>
AuthorDate: Tue Mar 5 17:55:50 2019 +0800
[RIP-9] Add the system configuration option doc: Direct ByteBuffer memory
size
[RIP-9] Add the system configuration option doc: Direct ByteBuffer memory
size
---
docs/en/Configuration_System.md | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/docs/en/Configuration_System.md b/docs/en/Configuration_System.md
index 2f29c3b..6354ffe 100644
--- a/docs/en/Configuration_System.md
+++ b/docs/en/Configuration_System.md
@@ -8,6 +8,10 @@ The latest released version of JDK 1.8 is recommended. Set the
same Xms and Xmx
-server -Xms8g -Xmx8g -Xmn4g
+Direct ByteBuffer memory size setting. Full GC will be triggered when the
Direct ByteBuffer up to the specified size:
+
+ -XX:MaxDirectMemorySize=15g
+
If you don’t care about the boot time of RocketMQ broker, pre-touch the Java
heap to make sure that every page will be allocated during JVM initialization
is a better choice. Those who don’t care about the boot time can enable it:
-XX:+AlwaysPreTouch
