Clever Geek Handbook

Launch of Selenium Grid 2 with 200 knots. How to increase Jetty threads?

I am currently running a selenium mesh 2 with over 50 nodes registered. After a while, the hub becomes unresponsive and has a very difficult time serving feedback (http requests) from the nodes. I read here :

Relatively large (> 50 node) Hub installations may need to increase jet streams by setting -DPOOL_MAX = 512 (or more) on the java command line.

So my question is, how can I increase Jetty streams and from where?

+3


source to share


2 answers


You can do this by running the hub command as shown below:

java -jar selenium-server.jar -role hub -DPOOL_MAX=512


-DPOOL_MAX will be set as env variable for JVM.

+1


source


The posting here is for people looking to scale their selenium grid.

DPOOL_MAX is no longer valid and documentation needs to be updated. Not sure if the last parameter was used in selenium-server-standalone.jar. You will need to set jettyThreads or jettyMaxThreads to get the new value.

For example -

java -jar /opt/selenium/selenium-server-standalone.jar -role hub -jettyThreads 512



If not specified, the default Jetty 200 will be used.

-jettyThreads, -jettyMaxThreads: Maximum number of threads for Jetty. An undefined, zero, or negative value means the Jetty default (200) is used.

You can learn about other options by going to help -

java -jar selenium-server-standalone-3.4.0.jar -role hub -help

0


source






More articles:


All Articles