# ec2 upload performance

**URL:** <https://community.wowza.com/t/ec2-upload-performance/39874>\
**Category:** Wowza Streaming Engine\
**Created:** [September 8, 2014, 9:35pm UTC](https://community.wowza.com/t/ec2-upload-performance/39874 "2014-09-08T21:35:01Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Jeremy\_Walts](https://avatars.discourse-cdn.com/v4/letter/j/91b2a8/32.png) [@Jeremy\_Walts](https://community.wowza.com/u/Jeremy_Walts)\
**Post date:** [September 8, 2014, 9:35pm UTC](https://community.wowza.com/t/ec2-upload-performance/39874/1 "2014-09-08T21:35:01Z")

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I noticed some poor stream performance on a c3.2xlarge ec2 instance from a wowza pre-built ami (ami-f6a5789e). I did a quick speedtest and upload speed never went above 3.5Mbit/s. I test on multiple speedtest servers. I started another instance with the same configuration but in another availability zone and got the same results. However, when I start a vanilla Amazon Linux AMI or a Wowza AWS Marketplace AMI upload speed is 50-150Mbit/s (depending on which speedtest server I use). Has anyone else experienced this issue? Could something be misconfigured in the pre-built ami?

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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:** [September 10, 2014, 9:45am UTC](https://community.wowza.com/t/ec2-upload-performance/39874/2 "2014-09-10T09:45:46Z")

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Hi there.

I doubt there is any influence on the prebuilt ami side that is keeping this down.

Maybe someone with more experience will have more to suggest on this issue.

Salvadore