# OutofMemory errors after Ubuntu OS upgrade

**URL:** <https://community.wowza.com/t/outofmemory-errors-after-ubuntu-os-upgrade/42099>\
**Category:** Wowza Streaming Engine\
**Tags:** server-administration\
**Created:** [May 21, 2016, 4:44pm UTC](https://community.wowza.com/t/outofmemory-errors-after-ubuntu-os-upgrade/42099 "2016-05-21T16:44:37Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Mike\_O\_Rourke](https://avatars.discourse-cdn.com/v4/letter/m/b5e925/32.png) [@Mike\_O\_Rourke](https://community.wowza.com/u/Mike_O_Rourke)\
**Post date:** [May 21, 2016, 4:44pm UTC](https://community.wowza.com/t/outofmemory-errors-after-ubuntu-os-upgrade/42099/1 "2016-05-21T16:44:37Z")

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Hi. I post this in the hopes that it may help someone else.

I recently upgraded my Ubuntu installation (using the automatic update program) and started getting java OutofMemory errors (could not start a new thread) when a stream file was connected or a VOD was requested. The OS upgrade went to a new kernel version (4.4.0). When I booted with an older kernel (3.16.0), the errors went away and Wowza Streaming Engine works as expected. The upgrade also installed Java 8 (the open source version; not Oracle). I installed both Java 7 and 6 (both Oracle versions) and tried them. They were better, but did not solve the problem.

I am submitting a request to Ubuntu support to ask about changes to the threads modules with the new kernel.

Is Wowza making plans to certify the version 4 linux kernel?

Thanks. Mike.

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**Author:** ![sal\_jefferson](https://avatars.discourse-cdn.com/v4/letter/s/6de8d8/32.png) [@sal\_jefferson](https://community.wowza.com/u/sal_jefferson)\
**Post date:** [May 23, 2016, 8:03am UTC](https://community.wowza.com/t/outofmemory-errors-after-ubuntu-os-upgrade/42099/2 "2016-05-23T08:03:33Z")

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Mike, thank you for the heads up. Please keep us posted on any response from Ubuntu support.

Regards,

Salvadore

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**Author:** ![Mike\_O\_Rourke](https://avatars.discourse-cdn.com/v4/letter/m/b5e925/32.png) [@Mike\_O\_Rourke](https://community.wowza.com/u/Mike_O_Rourke)\
**Post date:** [May 25, 2016, 9:36pm UTC](https://community.wowza.com/t/outofmemory-errors-after-ubuntu-os-upgrade/42099/3 "2016-05-25T21:36:24Z")

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Status update.

I asked a question about this on the Ubuntu forums and was advised to submit a bug report. The support team is working with me on solutions. No joy yet, though.

Thanks. Mike.

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**Author:** ![Andrew\_Ramberg](https://avatars.discourse-cdn.com/v4/letter/a/7c8e57/32.png) [@Andrew\_Ramberg](https://community.wowza.com/u/Andrew_Ramberg)\
**Post date:** [May 30, 2016, 12:26pm UTC](https://community.wowza.com/t/outofmemory-errors-after-ubuntu-os-upgrade/42099/4 "2016-05-30T12:26:21Z")

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Hello Mike,

Thanks for the update.

Best regards,

Andrew