# error attempting to configure javaOptions via gatling sbt plugin.

**URL:** https://community.gatling.io/t/error-attempting-to-configure-javaoptions-via-gatling-sbt-plugin/2153
**Category:** Gatling (Open-Source)
**Created:** [March 30, 2015, 12:12am UTC](https://community.gatling.io/t/error-attempting-to-configure-javaoptions-via-gatling-sbt-plugin/2153 "2015-03-30T00:12:04Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![Jonthan\_Ferguson](https://avatars.discourse-cdn.com/v4/letter/j/85e7bf/32.png) [@Jonthan\_Ferguson](https://community.gatling.io/u/Jonthan_Ferguson)
#### Post date: [March 30, 2015, 12:12am UTC](https://community.gatling.io/t/error-attempting-to-configure-javaoptions-via-gatling-sbt-plugin/2153/1 "2015-03-30T00:12:04Z")

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Hello,

I am getting an OOME while Gatling is generating it’s report. I’d like to increase the heap to stop this.

A previous thread suggested

import io.gatling.sbt.utils.PropertyUtils.\_  
javaOptions in Gatling := …

However this gives

error: not found: value Gatling

javaOptions in Gatling := …

Any input would be appreciated.

Thanks

Jono

my configuration is as follows:

```auto
sbt.version=0.13.8

~~~ plugin.sbt

addSbtPlugin("io.gatling" % "gatling-sbt" % "2.1.0")

~~~ build.scala

name := "gatling"

version := "0.0.1"

scalaVersion := "2.11.6"

scalacOptions ++= Seq(
"-deprecation",
"-encoding", "UTF-8",
"-unchecked", // Enable additional warnings where generated code depends on assumptions
"-feature",
"-language:implicitConversions",
"-language:postfixOps",
"-Xlint", // Enable recommended additional warnings.
"-Xfatal-warnings",
"-Yno-adapted-args",
"-Ywarn-dead-code",
"-Ywarn-numeric-widen",
"-Ywarn-value-discard",
"-Xfuture"
)

resolvers ++= Seq(
"Java.net Maven2 Repository" at "http://download.java.net/maven/2/",
"Sonatype scala-tools repo" at "https://oss.sonatype.org/content/groups/scala-tools/",
"Sonatype scala-tools releases" at "https://oss.sonatype.org/content/repositories/releases",
"Sonatype scala-tools snapshots" at "https://oss.sonatype.org/content/repositories/snapshots"
)

libraryDependencies ++= Seq(
"org.scalaz" %% "scalaz-core" % "7.1.0",
"io.gatling.highcharts" % "gatling-charts-highcharts" % "2.1.4",
"io.gatling" % "gatling-test-framework" % "2.1.4"
)

parallelExecution in Test := false

// Remove Java directories, otherwise sbteclipse generates them
unmanagedSourceDirectories in Compile <<= (scalaSource in Compile)(Seq(_))

unmanagedSourceDirectories in Test <<= (scalaSource in Test)(Seq(_))

enablePlugins(GatlingPlugin)

import io.gatling.sbt.utils.PropertyUtils._
javaOptions in Gatling := List(
"-server", "-XX:+UseThreadPriorities", "-XX:ThreadPriorityPolicy=42", "-Xms512M",
"-Xmx2512M", "-Xmn100M", "-XX:+HeapDumpOnOutOfMemoryError", "-XX:+AggressiveOpts",
"-XX:+OptimizeStringConcat", "-XX:+UseFastAccessorMethods", "-XX:+UseParNewGC",
"-XX:+UseConcMarkSweepGC", "-XX:+CMSParallelRemarkEnabled") ++ propagatedSystemProperties
```

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<div class="post-metadata">

### Author: ![Pierre\_DAL-PRA](https://avatars.discourse-cdn.com/v4/letter/p/ecccb3/32.png) [@Pierre\_DAL-PRA](https://community.gatling.io/u/Pierre_DAL-PRA)
#### Post date: [March 30, 2015, 7:29am UTC](https://community.gatling.io/t/error-attempting-to-configure-javaoptions-via-gatling-sbt-plugin/2153/2 "2015-03-30T07:29:26Z")

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HI Jonathan,

You’re missing an (unfortunately) necessary import.

Add “import io.gatling.sbt.GatlingPlugin.\_” and it should be fine 🙂

Please note that with the upcoming Gatling 2.1.5 release, you will not need those imports anymore and you’ll be able to rewrite it as :

javaOptions in Gatling := overrideDefaultJavaOptions("-Xmx2512m")

Cheers,

Pierre

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<div class="post-metadata">

### Author: ![Jonthan\_Ferguson](https://avatars.discourse-cdn.com/v4/letter/j/85e7bf/32.png) [@Jonthan\_Ferguson](https://community.gatling.io/u/Jonthan_Ferguson)
#### Post date: [March 30, 2015, 7:35am UTC](https://community.gatling.io/t/error-attempting-to-configure-javaoptions-via-gatling-sbt-plugin/2153/3 "2015-03-30T07:35:05Z")

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Excellent!

Thanks for the quick reply.

Cheers  
Jono

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### Author: ![empty\_account](https://avatars.discourse-cdn.com/v4/letter/e/74df32/32.png) [@empty\_account](https://community.gatling.io/u/empty_account)
#### Post date: [March 30, 2015, 10:32am UTC](https://community.gatling.io/t/error-attempting-to-configure-javaoptions-via-gatling-sbt-plugin/2153/4 "2015-03-30T10:32:46Z")

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Hi Pierre,

Many thanks for the work on the sbt plugin. Would it possible to document the changes to the plugin in the upcoming release as I have been watching the commits and noticed quite a few.

Aidy

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<div class="post-metadata">

### Author: ![Pierre\_DAL-PRA](https://avatars.discourse-cdn.com/v4/letter/p/ecccb3/32.png) [@Pierre\_DAL-PRA](https://community.gatling.io/u/Pierre_DAL-PRA)
#### Post date: [March 30, 2015, 10:36am UTC](https://community.gatling.io/t/error-attempting-to-configure-javaoptions-via-gatling-sbt-plugin/2153/5 "2015-03-30T10:36:09Z")

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Hi Aidy,

You’re welcome 🙂  
This has been done already 😉 : [https://github.com/gatling/gatling/commit/8336b8660bb3484943b746ac3e319499e86cd5b5](https://github.com/gatling/gatling/commit/8336b8660bb3484943b746ac3e319499e86cd5b5)

Cheers,

Pierre