Re: Session Reliability

#15516
nklykken
Member
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  • Regular Joe
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We’re experiencing some of the symptoms described in this tread. The following happens:
* While browsing Internet sites with heavy flash animations / graphic, opening PDF documents or certain mails in Outlook, our users often get thrown out with:
ICA[**AppName**]: No Such device
or in some cases
trap: invalid opcode, EIP = 0x7f1cbbf5
* Graphics is very slow, especially flash animations.

We have traced this down to be a problem with either Session Reliability, Speedscreen or both. We also had a misconfiguration in our WNOS.INI that could be the reason, but I’m not sure. (KeepDHCPRequestIP=yes)

Our current WNOS.INI, which seems to be working well with V10 v. 6.2.0_08:

;*************************************************************
;* *
;* This wnos.ini file was generated with the *
;* Configuration File Generator 4.5.13 *
;* Copyright by Thomas Moellerbernd *
;* *
;*************************************************************

;*************************************************************
;* General 1 *
;*************************************************************

autoload=1
Rapportserver=xx.xx.xx.xx
Privilege=None
dminMode=yes Admin-Username=???????? Admin-Password=??????
Privilege=None Lockdown=yes HidePPP=yes HidePN=yes EnableNetworkTest=yes ShowDisplaySettings=Yes

;*************************************************************
;* Input Devices *
;*************************************************************

Language=No

;*************************************************************
;* Display *
;*************************************************************

;Resolution=DDC
Screensaver=”0″

;*************************************************************
;* Time *
;*************************************************************

Timeserver=xx.xx.xx.xx Timeformat=”24-hour format” Dateformat=dd/mm/yyyy
TimeZone=’GMT + 01:00′ ManualOverride=yes Daylight=yes Start=030507 End=100507 TimeZoneName=”Central Europe Standard Time” DayLightName=”Central Europe Daylight Time”

;*************************************************************
;* Network *
;*************************************************************

SignOn=No
MaxVNCD=1
VncPassword=”??????????” Encrypt=yes
VncPrompt=Yes ActiveVisible=yes

;*************************************************************
;* General Session *
;*************************************************************

SessionConfig=ALL UnmapPrinters=no MapDisks=no DisableSound=yes UnmapUSB=no

;*************************************************************
;* ICA *
;*************************************************************

IcaBrowsing=HTTP
SessionConfig=ICA DiskMapTo=E

;


;- ICA Session 1 –
;- Each line but the last must end with a ” –
;



CONNECT=ICA
BrowserIP=xx.xx.xx.xx;xx.xx.xx.xx
Application=”**AppName**”
Description=”**AppName**”
AutoConnect=yes
Reconnect=no
Fullscreen=yes
HTTPBrowsing=1
UnmapSerials=yes
Mapdisks=no
Disablesound=yes
UnmapUSB=no
LocalCopy=yes

*************************************************************

As you can see, we have removed SessionReliability and KeepDHCPRequestIP from our configuration, which till now has worked very well for us.

We also made a change on our Farm-wide settings for Citrix, by turning on Discard queued image that is replaced by another image. This helped the slow performance with heavy graphics (ex. Flash animations)

I’ll have more information tomorrow when I’ll put the SessionReliability on again to rule out the missconfiguration with KeepDHCPRequestIP.