Reducing memory usage - Revision history

Pazza: /* Persistent setting and Windows work-around */

2021-08-21T23:21:22Z

Persistent setting and Windows work-around

Plebeian9000: remove background section...was interesting information, but rather confusing for most and not relevant since it is now addressed in the software

2021-08-21T18:18:37Z

remove background section...was interesting information, but rather confusing for most and not relevant since it is now addressed in the software

Plebeian9000: change 8gb maxram setting to 4gb

2021-08-21T18:16:48Z

change 8gb maxram setting to 4gb

Plebeian9000: add section to explain adding java options to bisq.cfg

2021-08-21T18:10:54Z

add section to explain adding java options to bisq.cfg

Plebeian9000 at 23:01, 28 April 2021

2021-04-28T23:01:47Z

Plebeian9000 at 23:01, 28 April 2021

2021-04-28T23:01:14Z

Plebeian9000: Plebeian9000 moved page Reduce JVM MAXRam to Reducing memory usage: make article title for intuitve and discoverable

2021-04-28T19:45:16Z

Plebeian9000 moved page Reduce JVM MAXRam to Reducing memory usage: make article title for intuitve and discoverable

Plebeian9000 at 12:16, 12 June 2020

2020-06-12T12:16:59Z

Ghubstan: /* Default MaxRAM Setting */

2020-04-15T15:26:24Z

Default MaxRAM Setting

Ghubstan at 13:00, 12 April 2020

2020-04-12T13:00:33Z

@@ Line 21: / Line 21: @@
   [JavaOptions]
   java-options=-XX:MaxRAM=4g
 Save the file, close it, and then open Bisq.

← Older revision		Revision as of 18:18, 21 August 2021
Line 23:		Line 23:

	Save the file, close it, and then open Bisq.		Save the file, close it, and then open Bisq.
−
−	~~== Background ==~~
−
−	One of the settings Java virtual machines (JVMs) use to calibrate how much physical memory to reserve at startup is '''MaxRAM''', and there is a good chance your JVM's default MaxRAM configuration is too large.
−
−	~~To check the default MaxRAM setting, run this <code>java</code> command:~~
−
−	~~java -XX:+UnlockDiagnosticVMOptions -XX:+PrintFlagsFinal -version \| grep MaxRAM~~
−
−	~~Look for the <code>MaxRAM</code> value (bytes) in the output. An example:~~
−
−	~~367: uint64_t MaxRAM = 137438953472~~
−
−	~~This means the OpenJDK 11 JVM's MaxRAM setting is 128GB, much more RAM than the average desktop machine has.~~
−
−	Experiments have shown running Bisq with a 4GB MaxRAM setting reduces memory consumption by more than 50% (when starting a clean Bisq installation with an empty data directory). Setting MaxRAM to 2GB reduces resident memory usage even more, but setting it any lower (1536m) will result in an OutOfMemoryError and crash the app.
−
−	~~As of version 1.3.2, Bisq starts with a MaxRAM setting of 4GB. If you're still having issues, try setting the parameter yourself as described above.~~

@@ Line 20: / Line 20: @@
   [JavaOptions]
-  java-options=-XX:MaxRAM=8g
+  java-options=-XX:MaxRAM=4g
 Save the file, close it, and then open Bisq.

← Older revision		Revision as of 18:10, 21 August 2021
Line 4:		Line 4:

	{{Run_with_Java_options\|<nowiki>-XX:MaxRAM=4g</nowiki>\|Reduce Bisq's memory usage by setting a ceiling of 4GB}}		{{Run_with_Java_options\|<nowiki>-XX:MaxRAM=4g</nowiki>\|Reduce Bisq's memory usage by setting a ceiling of 4GB}}
		+
		+	== Persistent setting and Windows work-around ==
		+
		+	If you'd rather not specify the RAM parameter every time you start Bisq, you can specify it in <code>Bisq.cfg</code> so it automatically takes effect every time.
		+
		+	First, make sure Bisq is closed.
		+
		+	Your <code>Bisq.cfg</code> file is in the directory with your Bisq binary (this is different from your [[Data_directory\|data directory location]]). See [[Running from the command line\|locations for each OS here]].
		+
		+	Navigate to the directory with your Bisq binary. Using Windows as an example, this would be <code>$home\AppData\Roaming\Bisq\</code>.
		+
		+	<code>Bisq.cfg</code> should be in the <code>app</code> directory.
		+
		+	Open that file in a text editor. Look for the <code>[JavaOptions]</code> section, and a line in that section that look something like <code>java-options=-XX:MaxRAM=8g</code>. Change it to <code>java-options=-XX:MaxRAM=4g</code>, or add it if it's not already there.
		+
		+	[JavaOptions]
		+	java-options=-XX:MaxRAM=8g
		+
		+	Save the file, close it, and then open Bisq.

	== Background ==		== Background ==

@@ Line 3: / Line 3: @@
 __TOC__
-{{Run_with_Java_options|<nowiki>-XX:MaxRAM=4g</nowiki>|Reduce Bisq's memory usage by setting a ceiling of 4GB.}}
+{{Run_with_Java_options|<nowiki>-XX:MaxRAM=4g</nowiki>|Reduce Bisq's memory usage by setting a ceiling of 4GB}}
 == Background ==

@@ Line 1: / Line 1: @@
 One of the settings Java virtual machines (JVMs) use to calibrate how much physical memory to reserve at startup is '''MaxRAM''', and there is a good chance your JVM's default MaxRAM configuration is too large.
 To check the default MaxRAM setting, run this <code>java</code> command:
-    java -XX:+UnlockDiagnosticVMOptions -XX:+PrintFlagsFinal -version | grep MaxRAM
+ java -XX:+UnlockDiagnosticVMOptions -XX:+PrintFlagsFinal -version | grep MaxRAM
 Look for the <code>MaxRAM</code> value (bytes) in the output. An example:
 : uint64_t MaxRAM = 137438953472
-This means the OpenJDK 11 JVM's MaxRAM setting is 128 GB, on a machine with only 16 GB RAM.
+This means the OpenJDK 11 JVM's MaxRAM setting is 128GB, much more RAM than the average desktop machine has.
-Experiments have shown running Bisq with a 4 GB MaxRAM setting reduces resident memory consumption by more than 50% (when starting a clean Bisq installation with an empty data directory). Setting MaxRAM to 2 GB reduces resident memory usage even more, but setting it any lower (1536m) will result in an OutOfMemoryError and crash the app.
+Experiments have shown running Bisq with a 4GB MaxRAM setting reduces memory consumption by more than 50% (when starting a clean Bisq installation with an empty data directory). Setting MaxRAM to 2GB reduces resident memory usage even more, but setting it any lower (1536m) will result in an OutOfMemoryError and crash the app.
-As of version 1.3.2, Bisq is started with a MaxRAM setting of 4 GB. If you are using Bisq v1.3.1 or older, consider upgrading to the [https://bisq.network/downloads latest version] to benefit from this change.
+As of version 1.3.2, Bisq starts with a MaxRAM setting of 4GB. If you're still having issues, try setting the parameter yourself as described above.

← Older revision	Revision as of 19:45, 28 April 2021
(No difference)

← Older revision		Revision as of 15:26, 15 April 2020
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−	As of version 1.3.~~[TODO]~~, Bisq is started with a MaxRAM setting of 4g (GB).    If you are using Bisq v1.3.~~[TODO]~~ or older, consider upgrading to the [https://bisq.network/downloads latest version] to benefit from this change.	+	As of version 1.3.2, Bisq is started with a MaxRAM setting of 4g (GB).    If you are using Bisq v1.3.1 or older, consider upgrading to the [https://bisq.network/downloads latest version] to benefit from this change.

← Older revision		Revision as of 13:00, 12 April 2020
Line 16:		Line 16:


−	As of version 1.2.7, Bisq is started with a MaxRAM setting of 4g (GB).    If you are using Bisq v1.2 [.TODO] or older, consider upgrading to the [https://bisq.network/downloads latest version] to benefit from this change.	+	As of version 1.3.[TODO], Bisq is started with a MaxRAM setting of 4g (GB).    If you are using Bisq v1.3.[TODO] or older, consider upgrading to the [https://bisq.network/downloads latest version] to benefit from this change.