I’m doing more stress testing, once virtual users goes around 160 I’m getting this error, Seems that memory issue, I want to know exact cause of it ? I’m working on Windows 10 with 5 GB remain in C: drive ;(
runtime: VirtualAlloc of 20971520 bytes failed with errno=1455------]
fatal error: out of memory
This looks like you are running out of ram. Specifically k6 needs another 20mb and your OS can’t provide it.
How much ram do you have ? as 160 VUs shouldn’t take more then 2gb …
You can also take a look at what I proposed in another thread about using the compatibility-mode in k6 (to be released in a new version … this week) which will definetely drop the memory usage
Definitely, you could try to enable it only for the requests you need it, with Params.responseType.
Also using compatibility mode after running it through my k6-es6 will definitely drop a lot of the memory usage as well