Re: Spice optimization over WAN

[Thiago Nascimento Araujo <taraujo@xxxxxxxxxxxx>]

Hi,

I have been using, for quite a while, the following options for those who connect through spice-html5 from outside:

image-compression=auto_glz

streaming-video=off

playback-compression=off

jpeg-wan-compression=always

zlib-glz-wan-compression=always

Since I keep everything up to date: kernel + qemu + spicelibs + spice-guest-tools, maybe those options are no longer necessary.

For people who connects through lan or mpls, I leave the spice server on default settings.

Note that compression options generates overhead on the server.

Since I have a very small number of external users (Those are for VDI non-persistent), and all of them are simple remoteApps, the overhead is ok.

Usually the spice (default settings) + qxl + spice-guest-tools + virtIO are the best combo.

The default settings optimizes based on some bandwidth calculations and enables or disables some of those options.

---

De: "Oscar Segarra" <oscar.segarra@xxxxxxxxx>
Para: "Thiago Nascimento Araujo" <taraujo@xxxxxxxxxxxx>
Cc: spice-devel@xxxxxxxxxxxxxxxxxxxxx
Enviadas: Quinta-feira, 16 de março de 2017 6:12:05
Assunto: Re: Spice optimization over WAN

Hi Thiago, 

Thanks a lot for the useful link...

Can you/anybody tell us the suggested configuration/parameters for best performans over WAN?

Thanks a lot.

2017-03-16 0:07 GMT+01:00 Thiago Nascimento Araujo <taraujo@xxxxxxxxxxxx>:

Hi Oscar,

I believe the documents is talking about the options described in the link below.

https://people.freedesktop.org/~teuf/spice-doc/html/ch03.html

Hope it helps.

---

De: "Oscar Segarra" <oscar.segarra@xxxxxxxxx>
Para: spice-devel@xxxxxxxxxxxxxxxxxxxxx
Enviadas: Quarta-feira, 15 de março de 2017 14:04:14
Assunto: Spice optimization over WAN

Hi, 

I have read quite slowly the datasheet published by redhat:

https://www.redhat.com/en/files/resources/en-rhev-spice-protocol-11080057.pdf

Where one can read:

"In addition, SPICE has WAN optimization capabilities optimize the user experience for lower bandwidth and/or higher latency network connections"

Anybody knows where can I find documentation about this optimization capabilities for lower bandwith and high latency networks?

Thanks a lot.

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