[sldev] Re:SVC-85 - friends lists not working

[Tateru Nino]

3) Specific simulators generally tend to be at fault. If simulator A
begins to exhibit the problem behaviour, then no presence information is
received from people logging in to simulator A, nor do people in
simulator A receive presence information, until the sim restarts.
Caveat: It's a little more likely that a logoff notification will be
received than a login notification. When the issue has been at its
worst, perhaps 15% of simulators have been affected. There seems to be
more than one issue, and given simulators (some seem more prone to it
than others) getting themselves in a bunch seems to be one of them.

Jake Simpson wrote:
> Peeps,
>
> I'm just going to re post this set of questions I added into the
> comments of SVC-85 - https://jira.secondlife.com/browse/SVC-85
> (friends lists not always working to show online presence correctly)
> just to see if any of you guys have run into this, and if you do, if
> you could look into the results of the questions. I would like to get
> this fixed but I need some more data before I can get it done right.
>
> Thanks
>
> OK, so I'm looking into this since it's obviously a bug of much
> contention. You can't have much of a second life if you can't see
> anyone to share it with.
>
> Kelly and I have been talking about approaches to fixing this - the
> code as it stands _should_ work correctly because in many
> circumstances it does. However, the code behind this is pretty knarly
> and has many places of potential failure, so Kelly and I have come up
> with a new way to deal with this (based on how we do group online
> presence reporting), using our new back bone system the way it should
> be used.
>
> With a view to doing that, I have a couple of questions for you guys.
>
> 1) When you know someone is on line, even though the friends list says
> they are not, do they show up as online in the groups list (assuming
> you know they are subscribed to one of the same groups as you)? The
> code that the groups uses to determine online presence is actually
> different from the code that the friends list uses (it's older code
> and also the friends list returns a lot more information regarding the
> friends themselves than the groups list does - that just has enough to
> say "this person is online or not". The friends list has information
> about where they are so you can IM them etc). From what we've
> observed, the groups stuff works when the friends list doesn't - it
> would be nice of you guys could confirm this.
>
> 2) When you initially log on and someone is not reported online
> (because they aren't), is the system updating when they _do_ log on?
> What I'm saying if either the friends list says everyone is off line,
> then a friend logs on and it updates and says they *are* online, or
> they *were* online, the friends list says they aren't - they relog -
> does it show up correctly then? Again the code that gets the initial
> list of friends and interrogates them to see if they are online or not
> is not the same system that reports a friend has logged on (or off) -
> it uses some of the same paths but it's not entirely the same.
>
> 3) Are we seeing an initial friends list situation where *select*
> people are not being reported as online, or everyone?
>
> 4) What does it take for a friend you know is online to show up as
> online in the friends list if they are initially not shown?
>
> The answers to this will help up determine exactly what's broken and
> whether we can fix it or whether it'll be easier to just try a new way
> of doing it.
>
> Either way, I want you guys to know we are on this - it's a top
> priority with LL.
>
> Jake
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-- 
Tateru Nino
http://dwellonit.blogspot.com/