Changeset 168d688 for installer

Timestamp:

Apr 2, 2015 4:05:43 PM (6 years ago)

Author:

dev <dev@…>

Branches:

master

Children:

f3b2eb6

Parents:

ade93ea

Message:

Disable JVM stats being written to file, to prevent long (up to ~400ms) pauses.

• Blog post: ​http://www.evanjones.ca/jvm-mmap-pause.html
• This change prevents tools that use the stats-file (/tmp/hsperfdata) from working (like jstat)

Location:

installer/resources

Files:

• portable/configs/wrapper.config (modified) (1 diff)
• small/wrapper.config (modified) (1 diff)
• wrapper.config (modified) (3 diffs)

installer/resources/portable/configs/wrapper.config

@@ -19 +19 @@
 wrapper.java.additional.5=-Di2p.dir.base=.
 wrapper.java.additional.5.stripquotes=TRUE
+
+# Prevent the JVM from exporting stats (and thereby causing hundreds of
+# ms long pauses during GC)
+wrapper.java.additional.6=-XX:+PerfDisableSharedMem
+
 # PORTABLE installation:
 # uncomment the following
-wrapper.java.additional.6=-Di2p.dir.pid=logs
-wrapper.java.additional.6.stripquotes=TRUE
-wrapper.java.additional.7=-Di2p.dir.temp=tmp
+wrapper.java.additional.7=-Di2p.dir.pid=logs
 wrapper.java.additional.7.stripquotes=TRUE
-wrapper.java.additional.8=-Di2p.dir.config=.
+wrapper.java.additional.8=-Di2p.dir.temp=tmp
 wrapper.java.additional.8.stripquotes=TRUE
+wrapper.java.additional.9=-Di2p.dir.config=.
+wrapper.java.additional.9.stripquotes=TRUE
 
 # Uncomment this for better performance.

installer/resources/small/wrapper.config

@@ -59 +59 @@
 wrapper.java.additional.3=-Dorg.mortbay.util.FileResource.checkAliases=false
 wrapper.java.additional.4=-Dorg.mortbay.xml.XmlParser.NotValidating=true
+
+# Prevent the JVM from exporting stats (and thereby causing hundreds of
+# ms long pauses during GC)
+wrapper.java.additional.5=-XX:+PerfDisableSharedMem
 
 # Initial Java Heap Size (in MB)

installer/resources/wrapper.config

@@ -80 +80 @@
 wrapper.java.additional.4.stripquotes=TRUE
 
+# Prevent the JVM from exporting stats (and thereby causing hundreds of
+# ms long pauses during GC)
+wrapper.java.additional.5=-XX:+PerfDisableSharedMem
+
 # On some IPv6 enabled systems, I2P and other network-enabled java applications
 # may fail to start. For examples see
@@ -86 +90 @@
 # 1) "echo 0 > /proc/sys/net/ipv6/bindv6only" as root; or
 # 2) uncomment the next two lines:
-#wrapper.java.additional.5=-Djava.net.preferIPv4Stack=true
-#wrapper.java.additional.6=-Djava.net.preferIPv6Addresses=false
+#wrapper.java.additional.6=-Djava.net.preferIPv4Stack=true
+#wrapper.java.additional.7=-Djava.net.preferIPv6Addresses=false
 
 # Jetty says this is a security risk
@@ -94 +98 @@
 # somehow - not sure exactly but here's a clue:
 # org.mortbay.util.FileResource.setCheckAliases(false)
-# wrapper.java.additional.7=-Dorg.mortbay.util.FileResource.checkAliases=false
+# wrapper.java.additional.8=-Dorg.mortbay.util.FileResource.checkAliases=false
 # PORTABLE installation:
 # uncomment the following
-#wrapper.java.additional.7=-Di2p.dir.pid="$INSTALL_PATH"
-#wrapper.java.additional.7.stripquotes=TRUE
-#wrapper.java.additional.8=-Di2p.dir.temp="$INSTALL_PATH"
+#wrapper.java.additional.8=-Di2p.dir.pid="$INSTALL_PATH"
 #wrapper.java.additional.8.stripquotes=TRUE
-#wrapper.java.additional.9=-Di2p.dir.config="$INSTALL_PATH"
+#wrapper.java.additional.9=-Di2p.dir.temp="$INSTALL_PATH"
 #wrapper.java.additional.9.stripquotes=TRUE
+#wrapper.java.additional.10=-Di2p.dir.config="$INSTALL_PATH"
+#wrapper.java.additional.10.stripquotes=TRUE
 #
 # Uncomment this for better performance.