[Konversation-devel] [Bug 160370] New: "Automatic User Information Look Up" can cause lag and excess flood

[Lorenzo J.Lucchini]

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http://bugs.kde.org/show_bug.cgi?id=160370         
           Summary: "Automatic User Information Look Up" can cause lag and
                    excess flood
           Product: konversation
           Version: 1.0.1
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: konversation-devel kde org
        ReportedBy: ljlbox tiscali it


Version:           1.0.1 (using KDE 3.5.9)
Installed from:    Ubuntu Packages
OS:                Linux

The "Enable Automatic User Information Look Up" feature (in Configure Konversation / Behavior / Chat Window) is selected by default.

While, by default, it attempts to avoid excessively long /WHO responses, by having "Max number of users in a channel" set to 200, it still seems to create serious problems when several smaller channels are joined.

The /WHO requests apparently cause severe lag (and practically continuous lag, if "Update Interval" is set too low, such as the default 90 seconds), and if enough channels are joined, an "Excess Flood" quit by the network is inevitable.

This is particularly serious as the client reconnects automatically and rejoins the channels it was in, since it can result in a never-ending row of excess floods if the user is not at the terminal when the problem becomes visible.