Re: [ovirt-users] VNC console extremely slow on windows 10

Friday, 17 February 2017

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...
 On 17 Feb 2017, at 14:34, Nelson Lameiras =
<nelson.lameiras(a)lyra-network.com&gt; wrote:
...
=20
 Yaniv,
=20
 I've done some extensive investigation, and my conclusions so far = bring some
new light to this issue :
...
=20
 As you have hinted, this is not a problem related to windows 10, as I = was able to
reproduce it with any laptop/system with windows 7 or 10. In =
fact, I do not find any evidence that VNC console works OK with any =
windows (maybe is our hardware?? =3D> we use DELL). I'm not sure anymore =
it did work in the past...
...
=20
 This is a problem related only with VNC consoles on virtual machines = using
windows client. SPICE works great under windows. VNC console works =
OK with remote viewer under centos.
...
=20
 I found out something interesting : as I said, console is so slow that = it
bearebly useable (1 refresh every 10 seconds) but if I alt+tab twice =
(change focus off and on) it will refresh immediatly. This seems to me =
as a client issue... not a oVirt issue. So maybe I should take this =
issue with remote viewer team ?

sounds like a good idea, SPICE people will be likely able to help

...
=20
 To answer your last question : "What oVirt installation needs VNC? " =
Indeed, oVirt hosted-engine installation needs a console and it proposes =
VNC and SPICE (vnc is default). SPICE console asks for a certificate =
configuration that I did not spent the necessary time to make it work as =
VNC works right out of the box (even if there is the refresh rate =
problem).

ok, we=E2=80=99re finally adding  headless VM option, but indeed for now =
you do not have any better choice for HE. But at least you do not really =
have to use it, right? You should be able to work with it over ssh.

Thanks,
michal

...
=20
 any information or hint to find a solution would be appreciated. = thanks
...
=20
 cordialement, regards,
=20
 <element-signature_logo_lyra_115x94.jpg>
  <https://www.lyra-network.com/>
 Nelson LAMEIRAS
 Ing=C3=A9nieur Syst=C3=A8mes et R=C3=A9seaux / Systems and Networks = engineer
...
 Tel: +33 5 32 09 09 70
 nelson.lameiras(a)lyra-network.com = <mailto:nelson.lameiras@lyra-network.com>
...
 www.lyra-network.com <https://www.lyra-network.com/> |
www.payzen.eu = 
<https://payzen.eu/>
...
 <element-signature_logo_YouTube_32x28.jpg> =
<https://www.youtube.com/channel/UCrVl1CO_Jlu3KbiRH-tQ_vA>
...
 <element-signature_logo_LinkedIn_41x28.jpg> =
<https://www.linkedin.com/company/lyra-network_2>
...
 <element-signature_logo_Twitter_42x28.jpg> =
<https://twitter.com/LyraNetwork>
...
 <element-signature_payzen_61x28.jpg>
<https://payzen.eu/>
 Lyra Network, 109 rue de l'innovation, 31670 Lab=C3=A8ge, FRANCE
=20
=20
 From: "Yaniv Kaul" <ykaul(a)redhat.com&gt;
 To: "Nelson Lameiras" <nelson.lameiras(a)lyra-network.com&gt;
 Cc: "Ovirt Users" <users(a)ovirt.org&gt;
 Sent: Monday, February 13, 2017 7:21:36 PM
 Subject: Re: [ovirt-users] VNC console extremely slow on windows 10
=20
=20
=20
 On Mon, Feb 13, 2017 at 7:24 PM, Nelson Lameiras =
<nelson.lameiras(a)lyra-network.com =
<mailto:nelson.lameiras@lyra-network.com>> wrote:
...
 Hello,
=20
 Since my company laptop has been migrated to from windows 7 to windows = 10,
launching a console on oVirt 4.0 (and 4.1) VMs which are configured =
with VNC graphics is extremely slow (around one refresh every 10 =
seconds). This is painfully slow and barely usable. The same console on =
SPICE graphics works perfectly.
...
=20
 So you suspect the issue is on the client side? Can you verify with a = Windows 7
laptop that the performance is good?
...
 =20
=20
 This is specially annoying since oVirt engine installation console = works only
with VNC in my build. I'm installing oVirt 4.1 on a test =
cluster, this makes my life very hard :(
...
=20
 What oVirt installation needs VNC?=20
  Y.
=20
=20
 So, now I'm not sure this is an issue with oVirt, remote-viewer (for = windows)
or windows 10.
>=20
> Does anybody else have this problem? any advice?
...
=20
 cordialement, regards,
=20
 <element-signature_logo_lyra_115x94.jpg>
  <https://www.lyra-network.com/>
 Nelson LAMEIRAS
 Ing=C3=A9nieur Syst=C3=A8mes et R=C3=A9seaux / Systems and Networks = engineer
...
 Tel: +33 5 32 09 09 70 <tel:+33%205%2032%2009%2009%2070>
 nelson.lameiras(a)lyra-network.com = <mailto:nelson.lameiras@lyra-network.com>
...
 www.lyra-network.com <https://www.lyra-network.com/> |
www.payzen.eu = 
<https://payzen.eu/>
...
 <element-signature_logo_YouTube_32x28.jpg> =
<https://www.youtube.com/channel/UCrVl1CO_Jlu3KbiRH-tQ_vA>
...
 <element-signature_logo_LinkedIn_41x28.jpg> =
<https://www.linkedin.com/company/lyra-network_2>
...
 <element-signature_logo_Twitter_42x28.jpg> =
<https://twitter.com/LyraNetwork>
...
 <element-signature_payzen_61x28.jpg>
<https://payzen.eu/>
 Lyra Network, 109 rue de l'innovation, 31670 Lab=C3=A8ge, FRANCE
=20
=20
 _______________________________________________
 Users mailing list
 Users(a)ovirt.org <mailto:Users@ovirt.org>
 http://lists.ovirt.org/mailman/listinfo/users =
<http://lists.ovirt.org/mailman/listinfo/users>
...
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=20
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<html><head><meta http-equiv=3D"Content-Type"
content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D""><br class=3D""><div><blockquote
type=3D"cite" class=3D""><div =
class=3D"">On 17 Feb 2017, at 14:34, Nelson Lameiras &lt;<a =
href=3D"mailto:nelson.lameiras@lyra-network.com" =
class=3D&quot;&quot;&gt;nelson.lameiras(a)lyra-network.com&lt;/a&gt;&amp;gt;
wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div
class=3D""><div =
style=3D"font-family: arial, helvetica, sans-serif; font-size: 12pt;" =
class=3D""><div class=3D"">Yaniv,<br
data-mce-bogus=3D"1" =
class=3D""></div><div class=3D""><br
data-mce-bogus=3D"1" =
class=3D""></div><div class=3D"">I've done some
extensive investigation, =
and my conclusions so far bring some new light to this issue :<br =
class=3D""></div><div class=3D""><br
data-mce-bogus=3D"1" =
class=3D""></div><div class=3D"">As you have hinted,
this is not a =
problem related to windows 10, as I was able to reproduce it with any =
laptop/system with windows 7 or 10. In fact, I do not find any evidence =
that VNC console works OK with any windows (maybe is our hardware?? =
=3D&gt; we use DELL). I'm not sure anymore it did work in the past...<br =
data-mce-bogus=3D"1" class=3D""></div><div
class=3D""><br =
data-mce-bogus=3D"1" class=3D""></div><div
class=3D"">This is a problem =
related only with VNC consoles on virtual machines using windows client. =
SPICE works great under windows. VNC console works OK with remote viewer =
under centos.<br data-mce-bogus=3D"1"
class=3D""></div><div class=3D""><br=
 data-mce-bogus=3D"1" class=3D""></div><div
class=3D"">I found out =
something interesting : as I said, console is so slow that it bearebly =
useable (1 refresh every 10 seconds) but if I alt+tab twice (change =
focus off and on) it will refresh immediatly. This seems to me as a =
client issue... not a oVirt issue. So maybe I should take this issue =
with remote viewer team ?<br data-mce-bogus=3D"1" =
class=3D""></div></div></div></div></blockquote><div><br
=
class=3D""></div>sounds like a good idea, SPICE people will be likely
=
able to help</div><div><br
class=3D""></div><div><blockquote type=3D"cite"=
 class=3D""><div class=3D""><div
class=3D""><div style=3D"font-family: =
arial, helvetica, sans-serif; font-size: 12pt;" class=3D""><div =
class=3D""><br data-mce-bogus=3D"1"
class=3D""></div><div class=3D"">To =
answer your last question : "What oVirt installation needs VNC?&nbsp;" =
Indeed, oVirt hosted-engine installation needs a console and it proposes =
VNC and SPICE (vnc is default). SPICE console asks for a certificate =
configuration that I did not spent the necessary time to make it work as =
VNC works right out of the box (even if there is the refresh rate =
problem).<br data-mce-bogus=3D"1" =
class=3D""></div></div></div></div></blockquote><div><br
=
class=3D""></div>ok, we=E2=80=99re finally adding &nbsp;headless VM
=
option, but indeed for now you do not have any better choice for HE. But =
at least you do not really have to use it, right? You should be able to =
work with it over ssh.</div><div><br =
class=3D""></div><div>Thanks,</div><div>michal</div><div><br
=
class=3D""><blockquote type=3D"cite"
class=3D""><div class=3D""><div =
class=3D""><div style=3D"font-family: arial, helvetica, sans-serif;
=
font-size: 12pt;" class=3D""><div class=3D""><br
data-mce-bogus=3D"1" =
class=3D""></div><div class=3D"">any information or
hint to find a =
solution would be appreciated. thanks<br data-mce-bogus=3D"1" =
class=3D""></div><div class=3D""><br
data-mce-bogus=3D"1" =
class=3D""></div><div data-marker=3D"__SIG_PRE__"
class=3D""><div =
class=3D"">cordialement, regards,</div><div
class=3D""><br =
data-mce-bogus=3D"1" class=3D""></div><table
style=3D"margin: 0px; =
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font-family: =
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data-mce-style=3D"margin: 0; font-size: 11px; font-family: =
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width=3D"345" valign=3D"top" class=3D""><table
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width: 258.75pt; table-layout: fixed; border: none;" =
data-mce-style=3D"margin: 0; width: 258.75pt; table-layout: fixed; =
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cellpadding=3D"0" =
border=3D"0" class=3D""><tbody class=3D""><tr
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font-weight: bold;" class=3D"">Nelson
LAMEIRAS</td></tr><tr class=3D""><td=
 style=3D"font-family: Arial,sans-serif; color: #2b3c7a; font-size: =
11px; line-height: 16px;" data-mce-style=3D"font-family: =
Arial,sans-serif; color: #2b3c7a; font-size: 11px; line-height: 16px;" =
class=3D"">Ing=C3=A9nieur Syst=C3=A8mes et R=C3=A9seaux<span =
style=3D"font-family: Arial,sans-serif; color: #337ab7; font-size: =
11px;" data-mce-style=3D"font-family: Arial,sans-serif; color: #337ab7; =
font-size: 11px;" class=3D""> / Systems and Networks =
engineer</span></td></tr><tr class=3D""><td
style=3D"line-height: 16px; =
font-family: 'Arial',sans-serif; color: #2b3c7a; font-size: 11px;" =
data-mce-style=3D"line-height: 16px; font-family: 'Arial',sans-serif; =
color: #2b3c7a; font-size: 11px;" class=3D""><span
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data-mce-style=3D"font-family: Arial,sans-serif; color: #2b3c7a; =
font-size: 11px;" class=3D"">Tel: +33 5 32 09 09
70</span></td></tr><tr =
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'Arial',sans-serif; color: #2b3c7a; font-size: 11px;" =
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text-align: left;" class=3D""><div class=3D"">Lyra
Network, 109 rue de =
l'innovation, 31670 Lab=C3=A8ge, =
FRANCE</div></td></tr></tbody></table><div
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class=3D""><div =
data-marker=3D"__HEADERS__" class=3D""><b
class=3D"">From: </b>"Yaniv =
Kaul" &lt;<a href=3D"mailto:ykaul@redhat.com" =
class=3D&quot;&quot;&gt;ykaul(a)redhat.com&lt;/a&gt;&amp;gt;&lt;br
class=3D""><b class=3D"">To: =
</b>"Nelson Lameiras" &lt;<a =
href=3D"mailto:nelson.lameiras@lyra-network.com" =
class=3D&quot;&quot;&gt;nelson.lameiras(a)lyra-network.com&lt;/a&gt;&amp;gt;&lt;br
class=3D""><b =
class=3D"">Cc: </b>"Ovirt Users" &lt;<a
href=3D"mailto:users@ovirt.org" =
class=3D&quot;&quot;&gt;users(a)ovirt.org&lt;/a&gt;&amp;gt;&lt;br
class=3D""><b class=3D"">Sent: =
</b>Monday, February 13, 2017 7:21:36 PM<br class=3D""><b =
class=3D"">Subject: </b>Re: [ovirt-users] VNC console extremely slow on
=
windows 10<br class=3D""></div><div
class=3D""><br class=3D""></div><div =
data-marker=3D"__QUOTED_TEXT__" class=3D""><div
dir=3D"ltr" class=3D""><br=
 class=3D""><div class=3D"gmail_extra"><br
class=3D""><div =
class=3D"gmail_quote">On Mon, Feb 13, 2017 at 7:24 PM, Nelson Lameiras =
<span dir=3D"ltr" class=3D"">&lt;<a =
href=3D"mailto:nelson.lameiras@lyra-network.com" target=3D"_blank" =
class=3D&quot;&quot;&gt;nelson.lameiras(a)lyra-network.com&lt;/a&gt;&amp;gt;&lt;/span&gt;
wrote:<br =
class=3D""><blockquote class=3D"gmail_quote"
style=3D"margin:0 0 0 =
.8ex;border-left:1px #ccc solid;padding-left:1ex"><div
class=3D""><div =
style=3D"font-family: arial, helvetica, sans-serif; font-size: 12pt;" =
class=3D""><div class=3D"">Hello,<br
class=3D""></div><br class=3D""><div =
class=3D"">Since my company laptop has been migrated to from windows 7 =
to windows 10, launching a console on oVirt 4.0 (and 4.1) VMs which are =
configured with VNC graphics is extremely slow (around one refresh every =
10 seconds). This is painfully slow and barely usable. The same console =
on SPICE graphics works perfectly.<br =
class=3D""></div></div></div></blockquote><br
class=3D""><div =
class=3D"">So you suspect the issue is on the client side? Can you =
verify with a Windows 7 laptop that the performance is good?</div><div =
class=3D"">&nbsp;<br
class=3D""></div><blockquote class=3D"gmail_quote" =
style=3D"margin:0 0 0 .8ex;border-left:1px #ccc =
solid;padding-left:1ex"><div class=3D""><div
style=3D"font-family: =
arial, helvetica, sans-serif; font-size: 12pt;" class=3D""><br =
class=3D""><div class=3D"">This is specially annoying since
oVirt engine =
installation console works only with VNC in my build. I'm installing =
oVirt 4.1 on a test cluster, this makes my life very hard :(<br =
class=3D""></div></div></div></blockquote><br
class=3D""><div =
class=3D"">What oVirt installation needs VNC?&nbsp;</div><div =
class=3D"">&nbsp;Y.</div><br
class=3D""><blockquote class=3D"gmail_quote" =
style=3D"margin:0 0 0 .8ex;border-left:1px #ccc =
solid;padding-left:1ex"><div class=3D""><div
style=3D"font-family: =
arial, helvetica, sans-serif; font-size: 12pt;" class=3D""><br =
class=3D""><div class=3D"">So, now I'm not sure this is
an issue with =
oVirt, remote-viewer (for windows) or windows 10.<br
class=3D""></div><br =
class=3D""><div class=3D"">Does anybody else have this
problem? any =
advice?<br class=3D""></div><br class=3D""><div
class=3D""><div =
class=3D"">cordialement, regards,</div><br
class=3D""><table =
style=3D"margin:0px;table-layout:fixed;border:none;width:345pt;padding:0px=
" width=3D"460" cellspacing=3D"0" cellpadding=3D"0"
border=3D"0" =
class=3D""><tbody class=3D""><tr
class=3D""><td =
style=3D"margin:0;font-size:11px;font-family:Arial,sans-serif;color:#2b3c7=
a;line-height:16px;width:86.25pt;text-align:left" width=3D"115" =
valign=3D"top" class=3D""><a
href=3D"https://www.lyra-network.com/" =
style=3D"border:none;text-decoration:none;width:100%;display:block;clear:b=
oth" target=3D"_blank" class=3D""><span =
id=3D"cid:0e25a29c09e0a606ebb40f3ab356ecabc4303510@zimbra">&lt;element-sig=
nature_logo_lyra_115x94.jpg&gt;</span></a><br
class=3D""></td><td =
style=3D"margin:0;font-size:11px;font-family:Arial,sans-serif;color:#2b3c7=
a;line-height:16px;width:258.75pt" width=3D"345" valign=3D"top"
=
class=3D""><table =
style=3D"margin:0;width:258.75pt;table-layout:fixed;border:none" =
width=3D"345" cellspacing=3D"0" cellpadding=3D"0"
border=3D"0" =
class=3D""><tbody class=3D""><tr
class=3D""><td =
style=3D"font-size:16px;font-family:Arial,sans-serif;color:#2b3c7a;line-he=
ight:18px;font-weight:bold" class=3D"">Nelson
LAMEIRAS</td></tr><tr =
class=3D""><td =
style=3D"font-family:Arial,sans-serif;color:#2b3c7a;font-size:11px;line-he=
ight:16px" class=3D"">Ing=C3=A9nieur Syst=C3=A8mes et
R=C3=A9seaux<span =
style=3D"font-family:Arial,sans-serif;color:#337ab7;font-size:11px" =
class=3D""> / Systems and Networks
engineer</span></td></tr><tr =
class=3D""><td =
style=3D"line-height:16px;font-family:'Arial',sans-serif;color:#2b3c7a;fon=
t-size:11px" class=3D""><span =
style=3D"font-family:Arial,sans-serif;color:#2b3c7a;font-size:11px" =
class=3D"">Tel: <a href=3D"tel:+33%205%2032%2009%2009%2070" =
target=3D"_blank" class=3D"">+33 5 32 09 09
70</a></span><br =
data-mce-bogus=3D"1" class=3D""></td></tr><tr
class=3D""><td =
style=3D"line-height:16px;font-family:'Arial',sans-serif;color:#2b3c7a;fon=
t-size:11px" class=3D""><a =
href=3D"mailto:nelson.lameiras@lyra-network.com" =
style=3D"font-size:11px;font-family:Arial,sans-serif;line-height:16px;text=
-decoration:none" target=3D"_blank" =
class=3D&quot;&quot;&gt;nelson.lameiras(a)lyra-network.com&lt;/a&gt;&lt;br =
class=3D""></td></tr><tr class=3D""><td =
style=3D"line-height:16px;font-family:'Arial',sans-serif;color:#2b3c7a;fon=
t-size:11px" class=3D""><a
href=3D"https://www.lyra-network.com/" =
style=3D"font-size:11px;font-family:Arial,sans-serif;line-height:16px;bord=
er:none;text-decoration:none" target=3D"_blank" =
class=3D"">www.lyra-network.com</a> <a
href=3D"https://payzen.eu/" =
style=3D"font-size:11px;font-family:Arial,sans-serif;line-height:16px;bord=
er:none;text-decoration:none" target=3D"_blank" class=3D""> |
=
www.payzen.eu</a><br =
class=3D""></td></tr></tbody></table></td></tr></tbody></table><table
=
style=3D"margin:0;table-layout:fixed;border:none;width:345pt" =
width=3D"460" cellspacing=3D"0" cellpadding=3D"0"
class=3D""><tbody =
class=3D""><tr class=3D""><td =
style=3D"margin:0;font-size:11px;font-family:Arial,sans-serif;color:#2b3c7=
a;line-height:16px;width:24pt;text-align:left" width=3D"32"
valign=3D"top"=
 class=3D""><a =
href=3D"https://www.youtube.com/channel/UCrVl1CO_Jlu3KbiRH-tQ_vA" =
style=3D"border:none;text-decoration:none;margin:0;float:left;display:inli=
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nature_logo_YouTube_32x28.jpg&gt;</span></a><br
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a;line-height:16px;width:30.75pt;text-align:left" width=3D"41" =
valign=3D"top" class=3D""><a =
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 class=3D"">_______________________________________________<br
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Re: [ovirt-users] VNC console extremely slow on windows 10