On Thu, May 26, 2016 at 05:55:34PM +0000, Jeremy Stanley wrote: > On 2016-05-26 12:54:49 -0400 (-0400), Matthew Treinish wrote: > > Just a quick follow-up I started running this on a throwaway server at > > 15.184.138.236. So you can subscribe to events from gerrit. > [...] > > How resource-intensive is it? Curious whether it makes sense to run > something like this directly on review.openstack.org. If zuul grew > support for that mechanism, it might allow CI systems (third party > or even our own) to wean off using SSH entirely since this is a > problem in a lot of places from crazy enterprise firewall policies > to systems running in mainland China.
It's eating like nothing on my server right now. This is all running on a single cpu vm on a private cloud with a "Intel Xeon E312xx (Sandy Bridge)" (according to /proc/cpuinfo) Mosquitto itself has a memory footprint < 1MB and I've seen it spike up to a whopping 1% cpu utilization. Although, this might increase a as more subscribers are added. This is the first time I've played with mosquitto and mqtt so I don't know what it's scaling is like. But, I imagine it should handle a lot of subscriptions well since it's supposed to be an IoT thing. germqtt is eating a bit more with consuming about 1.5M of RAM and it uses about the same CPU as Mosquitto. -Matt Treinish
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