[Opensim-dev] Memory cache

[Melanie]

Not for that. A quite thin caching system I wrote from scratch.

Melanie

Frisby, Adam wrote:
> We are using an external caching library I believe, it could be sitting in there.
> 
> Adam
> 
>> -----Original Message-----
>> From: opensim-dev-bounces at lists.berlios.de [mailto:opensim-dev-
>> bounces at lists.berlios.de] On Behalf Of Melanie
>> Sent: Wednesday, 20 May 2009 1:56 PM
>> To: opensim-dev at lists.berlios.de
>> Subject: Re: [Opensim-dev] Memory cache
>> 
>> The surprise really is that the cache would be a performance loss
>> instead of a performance gain. What is there that makes it so slow?
>> 
>> Melanie
>> 
>> Frisby, Adam wrote:
>> > As chief engineer aboard the USS OSgrid, I might want to recommend
>> against this.
>> >
>> > Not having the sims cache assets will mean that every asset request
>> will hit the core asset server which in turn will result in higher
>> bandwidth requirements for it in the long run. It doesn't appear to
>> have made a huge impact on our bandwidth charts for this week yet -
>> however I wouldn't be surprised if it did if everyone did this.
>> >
>> > Adam
>> >
>> > From: opensim-dev-bounces at lists.berlios.de [mailto:opensim-dev-
>> bounces at lists.berlios.de] On Behalf Of Nebadon Izumi
>> > Sent: Wednesday, 20 May 2009 10:19 AM
>> > To: diva at metaverseink.com; opensim-dev at lists.berlios.de
>> > Subject: Re: [Opensim-dev] Memory cache
>> >
>> > Yay for mistakes that end in gains!!! of course if anyone asks i
>> planned this ;P  anyway i thought people would like to see my ini
>> changes.. this is what lead to the discovery:
>> >
>> > [OpenSim.ini]
>> >     ; The following is the configuration section for the new style
>> grid servers
>> >     ; If you don't know what this is, don't enable it. It will eat
>> your data,
>> >     ; format your hard drive and make all meat in your fridge spoil.
>> >     ; You have been warned.
>> >     ; Some of this is starting to work!
>> > [Modules]
>> >     ; Choose one
>> >     ;AssetServices = "LocalAssetServicesConnector"
>> >     AssetServices = "RemoteAssetServicesConnector"
>> >     ;AssetServices = "HGAssetBroker"
>> >
>> >     ; If you don't want asset caching in the regions, comment this
>> >     AssetCaching = "CoreAssetCache"  ;<<<---*** SEE ERROR HERE ***---
>> ->>>
>> >
>> >     ; Choose one
>> >     ;UserServices = "LocalUserServicesConnector"
>> >     UserServices = "RemoteUserServicesConnector"
>> >
>> >
>> > [AssetService]
>> >     ; Parameters for local assets, formerly known as "standalone"
>> >     LocalServiceModule =
>> "OpenSim.Services.AssetService.dll:AssetService"
>> >     StorageProvider = "OpenSim.Data.SQLite.dll"
>> >     ;StorageProvider = "OpenSim.Data.MySQL.dll"
>> >     ;ConnectionString = "Data Source=localhost;Database=opensim;User
>> ID=opensim;Password=opensim;"
>> >     DefaultAssetLoader =
>> "OpenSim.Framework.AssetLoader.Filesystem.dll"
>> >     AssetLoaderArgs = "assets/AssetSets.xml"
>> >
>> >     ; Parameters for remote assets, formerly known as "grid"
>> >     AssetServerURI = "http://assets.osgrid.org:8003/"
>> >
>> >     ; Paremeters for the Hypergrid connector
>> >
>> >     ;; Parameters for the HG Broker
>> >     ; Use this one if you have a standalone grid
>> >     ;LocalGridAssetService =
>> "OpenSim.Services.AssetService.dll:AssetService"
>> >     ; Use this one if this sim is connected to a grid-wide asset
>> server
>> >     ;LocalGridAssetService =
>> "OpenSim.Services.Connectors.dll:AssetServiceConnector"
>> >     ;HypergridAssetService =
>> "OpenSim.Services.AssetService.dll:HGAssetService"
>> >
>> > [AssetCache]
>> >     ; Number of buckets for assets
>> >     CacheBuckets = 32768
>> >
>> > [UserService]
>> >     ;LocalServiceModule =
>> "OpenSim.Services.UserService.dll:UserService"
>> >
>> > [/OpenSim.ini]
>> >
>> > Please test this out and see if you see gains too and let us know.
>> >
>> > Neb
>> >
>> >
>> >
>> > ---------------------------------------------------------------------
>> ---
>> >
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