# CircleCI builds and runs some tests successfully but then freezes

**URL:** <https://discuss.circleci.com/t/circleci-builds-and-runs-some-tests-successfully-but-then-freezes/31243>\
**Category:** Build Environment\
**Tags:** nodejs\
**Created:** [July 7, 2019, 7:47pm UTC](https://discuss.circleci.com/t/circleci-builds-and-runs-some-tests-successfully-but-then-freezes/31243 "2019-07-07T19:47:50Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![KyleTryon](https://sea2.discourse-cdn.com/circleci/user_avatar/discuss.circleci.com/kyletryon/32/9977_2.png) [@KyleTryon](https://discuss.circleci.com/u/KyleTryon)\
**Post date:** [July 8, 2019, 1:14pm UTC](https://discuss.circleci.com/t/circleci-builds-and-runs-some-tests-successfully-but-then-freezes/31243/2 "2019-07-08T13:14:09Z")

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Hey @samfuller01,

There is a decent chance that you will require more than 4Gb of RAM and therefore need to enable the [resource\_class](https://circleci.com/docs/2.0/configuration-reference/#resource_class) setting to one with more memory (medium+, large).

Before that, try lengthening the amount of time the job has before timing out by increasing the `no_output_timeout` limit: [https://circleci.com/docs/2.0/configuration-reference/#run](https://circleci.com/docs/2.0/configuration-reference/#run)

The default is 10 minutes, give 20 a try. If that doesn’t work, feel free to open a ticket with support and we’ll be happy to check the memory usage of the container.

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_[View the full topic](https://discuss.circleci.com/t/circleci-builds-and-runs-some-tests-successfully-but-then-freezes/31243)._