# Installing Gatling **URL:** \ **Category:** Gatling (Open-Source)\ **Created:** [January 20, 2017, 8:30am UTC](https://community.gatling.io/t/installing-gatling/3511 "2017-01-20T08:30:38Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![chandra\_shekhar\_Turh](https://avatars.discourse-cdn.com/v4/letter/c/90db22/32.png) [@chandra\_shekhar\_Turh](https://community.gatling.io/u/chandra_shekhar_Turh)\ **Post date:** [January 20, 2017, 8:30am UTC](https://community.gatling.io/t/installing-gatling/3511/1 "2017-01-20T08:30:38Z")
hello, I am new user to Gatling and I am trying evaluate the tool for our performance testing, After installing gatling I am trying to run gatling.bat on windows and I get this error C:\gatling-charts-highcharts-bundle-2.2.3\bin\>gatling.bat GATLING\_HOME is set to “C:\gatling-charts-highcharts-bundle-2.2.3” JAVA = ““C:\Program Files\Java\jdk1.8.0\_121\bin\java.exe”” Error occurred during initialization of VM java.lang.OutOfMemoryError: unable to create new native thread There is no simulation script. Please check that your scripts are in user-files/ simulations Press any key to continue . . . The version of gatling installed is 2.2.3 ---
**Author:** ![Stephen](https://avatars.discourse-cdn.com/v4/letter/s/96bed5/32.png) [@Stephen](https://community.gatling.io/u/Stephen)\ **Post date:** [January 23, 2017, 8:36am UTC](https://community.gatling.io/t/installing-gatling/3511/2 "2017-01-23T08:36:46Z")
Hello, I would suggest you to increase the maximum heap size of the JVM to 1536m. In gatling.bat, find the “-Xmx1G” parameter and replace it to “-Xmx1536m”. In the latest release, it is on line 45. ---
**Author:** ![chandra\_shekhar\_Turh](https://avatars.discourse-cdn.com/v4/letter/c/90db22/32.png) [@chandra\_shekhar\_Turh](https://community.gatling.io/u/chandra_shekhar_Turh)\ **Post date:** [January 23, 2017, 6:07pm UTC](https://community.gatling.io/t/installing-gatling/3511/3 "2017-01-23T18:07:27Z")
Hi Stephen, many thanks for your quick reply. The application is launching now 🙂 ---
**Author:** ![chandra\_shekhar\_Turh](https://avatars.discourse-cdn.com/v4/letter/c/90db22/32.png) [@chandra\_shekhar\_Turh](https://community.gatling.io/u/chandra_shekhar_Turh)\ **Post date:** [January 24, 2017, 5:36am UTC](https://community.gatling.io/t/installing-gatling/3511/4 "2017-01-24T05:36:25Z")
Now I am getting this error… C:\gatling-charts-highcharts-bundle-2.2.3\bin\>gatling.bat GATLING\_HOME is set to “C:\gatling-charts-highcharts-bundle-2.2.3” JAVA = ““C:\Program Files\Java\jdk1.8.0\_121\bin\java.exe”” Error occurred during initialization of VM Could not reserve enough space for 1572864KB object heap Error occurred during initialization of VM Could not reserve enough space for 1572864KB object heap The application launched once only after setting the switch -Xmx1536m in gatling.bat ---
**Author:** ![chandra\_shekhar\_Turh](https://avatars.discourse-cdn.com/v4/letter/c/90db22/32.png) [@chandra\_shekhar\_Turh](https://community.gatling.io/u/chandra_shekhar_Turh)\ **Post date:** [January 24, 2017, 6:00am UTC](https://community.gatling.io/t/installing-gatling/3511/5 "2017-01-24T06:00:20Z")
The machine I am using is 32-bit ---
**Author:** ![chandra\_shekhar\_Turh](https://avatars.discourse-cdn.com/v4/letter/c/90db22/32.png) [@chandra\_shekhar\_Turh](https://community.gatling.io/u/chandra_shekhar_Turh)\ **Post date:** [January 24, 2017, 6:03am UTC](https://community.gatling.io/t/installing-gatling/3511/6 "2017-01-24T06:03:00Z")
I tired setting ENV variable, but no luck Variables-\>New: Variable name: `_JAVA_OPTIONS` Variable value: -Xmx1536m ---
**Author:** ![Barry\_Perez](https://avatars.discourse-cdn.com/v4/letter/b/7ba0ec/32.png) [@Barry\_Perez](https://community.gatling.io/u/Barry_Perez)\ **Post date:** [January 24, 2017, 7:19am UTC](https://community.gatling.io/t/installing-gatling/3511/7 "2017-01-24T07:19:37Z")
A 32-bit jvm supports a 1.5gb heap. How much free memory is there on your machine before starting Gatling? Please tell us you've checked this? ---
**Author:** ![chandra\_shekhar\_Turh](https://avatars.discourse-cdn.com/v4/letter/c/90db22/32.png) [@chandra\_shekhar\_Turh](https://community.gatling.io/u/chandra_shekhar_Turh)\ **Post date:** [January 24, 2017, 9:02am UTC](https://community.gatling.io/t/installing-gatling/3511/8 "2017-01-24T09:02:59Z")
it is less than 400MB ---
**Author:** ![Barry\_Perez](https://avatars.discourse-cdn.com/v4/letter/b/7ba0ec/32.png) [@Barry\_Perez](https://community.gatling.io/u/Barry_Perez)\ **Post date:** [January 24, 2017, 9:28am UTC](https://community.gatling.io/t/installing-gatling/3511/9 "2017-01-24T09:28:33Z")
There’s your problem then… ---
**Author:** ![Senthilchandrasekar](https://avatars.discourse-cdn.com/v4/letter/s/ecae2f/32.png) [@Senthilchandrasekar](https://community.gatling.io/u/Senthilchandrasekar)\ **Post date:** [April 17, 2018, 9:01pm UTC](https://community.gatling.io/t/installing-gatling/3511/10 "2018-04-17T21:01:05Z")
I have 67.8GB free space in my machine. but it shows GATLING\_HOME is set to “C:\gatling-charts-highcharts-bundle-2.3.1” JAVA = ““C:\opt\isv\Devtools\jdk1.8.45\bin\java.exe”” Error occurred during initialization of VM Could not reserve enough space for 1048576KB object heap There is no simulation script. Please check that your scripts are in user-files/ simulations Press any key to continue . . . how can I resolve this issue.? scala file created listed in user files\Simulation