[Qemu-devel] QEMU websockets support is laggy?

[Brian Rak]

We've been considering switching over to using qemu's built in 
websockets support (to avoid the overhead of needing websockify 
running).  We've been seeing very poor performance after the switch (it 
takes the console 4-5 seconds to update after pressing a key).  So far, 
I haven't been able to find any indication of why this is happening.  
The exact same configuration works perfectly when running with 
websockify, but laggy when hitting qemu directly.

I've tried a few things (disabling encryption, bypassing our usual nginx 
proxy, even connecting via a ssh tunnel), and haven't made any sort of 
progress here.  Has anyone else seen this?  Any suggestions as to where 
I should start looking?