On 09/08/10 22:47, Mark Dubin wrote:
There are numerous default settings in OpenSim.ini that are possibly
related to client performance lag. I cannot (at least readily) find
explanations of how these defaults affect performance if they are
increased or decreased or changed. I would like to know, thus this posting.
Here are normally used ones I think are relevant to my question, and
their defaults. If you know the impact of changing any of them, please
post to this list, or off-line to me by e-mail. I will collate the
answers and add them to the Wiki in an appropriate manner, perhaps as a
separate linked page.
I apologize in advance to those who think the answers are self-evident
:D Thanks, Mark
I know a few of these, though unfortunately not all off the top of my head.
----------
; Max threads to allocate on the FireAndForget thread pool when running
with the SmartThreadPool option above
MaxPoolThreads = 15
; Objects will be considered for persistance in the next sweep when they
have not changed for this number of seconds
MinimumTimeBeforePersistenceConsidered = 60
Amount of time before a new or changed scene object can be persisted to the database. On this setting, if one moves a
prim then the details will not be updated until at least 60 seconds have passed.
; Objects will always be considered for persistance in the next sweep if
the first change occurred this number of seconds ago
MaximumTimeBeforePersistenceConsidered = 600
Amount of time after which a scene object will always be persisted. For instance, suppose that an object has a script
that changes it every 45 seconds. If we only had the MinimumTimeBeforePersistenceConsidered setting above, then the
object would never be updated in the database since it never reaches 60 seconds without changing.
However, with the setting of 600 here, that scene object will always be made to
persist after 600 seconds have passed.
; Maximum number of llListen events we allow per script. Set this to 0
to have no limit imposed.
max_listens_per_script = 64
[XEngine]
; How many threads to start at maximum load
MaxThreads = 100
[XEngine]
; Time a thread must be idle (in seconds) before it dies
IdleTimeout = 60
[XEngine]
; Thread priority ("Lowest", "BelowNormal", "Normal", "AboveNormal",
"Highest")
Priority = "BelowNormal"
This refers to thread priority in the VM. Afaik, this is not yet implemented in Mono (would love to know if I'm wrong).
Higher priorities would theoretically give script threads some precendence over other OpenSim thrads.
[XEngine]
; Maximum number of events to queue for a script (excluding timers)
MaxScriptEventQueue = 300
This refers to LSL events. The higher this number, the more that can stack up
waiting to be dealt with.
[XEngine]
; Stack size per thread created
ThreadStackSize = 262144
[XEngine]
; Interval (s) between background save of script states
SaveInterval = 120
Script state is all the variables in an LSL script. I presume that on a setting of 120 this will be persisted every 2
minutes. If your sim crashes the script would revert to the previously persisted state.
[XEngine]
; Interval (s) between maintenance runs (0 = disable)
MaintenanceInterval = 10
[XEngine]
; Time a script can spend in an event handler before it is interrupted
EventLimit = 30
[XEngine]
; If a script overruns it's event limit, kill the script?
KillTimedOutScripts = false
[XEngine]
; Sets the multiplier for the scripting delays
ScriptDelayFactor = 1.0
This refers to the delays built into each script command to stop a region being overloaded. If 1.0, then the normal
Linden Lab delays are used (see LSL wiki and such for details). If 0.0, then there are no delays.
[InterestManagement]
; This section controls how state updates are prioritized for each client
; Valid values are Time, Distance, SimpleAngularDistance, and FrontBack
UpdatePrioritizationScheme = FrontBack
ReprioritizationEnabled = true
ReprioritizationInterval = 2000.0
RootReprioritizationDistance = 10.0
ChildReprioritizationDistance = 20.0
This affects how prim information is sent to the viewer. I believe Time prioritizes them by when the server requests
the update is sent. Distance by how close they are to the viewer. SimpleAngularDistance is currently identical to
Distance. FrontBack increases priorities for objects in front and decreases it for those behind.
--
Justin Clark-Casey (justincc)
http://justincc.org
http://twitter.com/justincc
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