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I have an application written fully with DO 3.9 using offline layer on client. The problem I have is a very time-consuming ClientSideCache.RegisterDomain() call when client app starts. This call lasts about 15-20 seconds and makes my users very unhappy when they runs the app. I have traced the problem to Deserialize() call reading ObjectModel from client side cache folder. Frankly speaking, application indeed has a big object model (about 230 persistent types and all together about 10.000 fields), but still somehow I feel - loading time can be better. The size of ObjectModel.bin file on disk is about 20Mb. Is there something I can do about it? Thanx in advance. |
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Hello, Unfortunatelly it seems impossible to speedup deserialization of the I suppose the possible option would be implementing some kind of handmade serialization/deserialization routines. Such routines would not to use reflection consequently they would be faster. But this option is not a fix. It is significant redesign and consequently is too time consumable and too expensive. |
Hello
Unfortunatelly it is quite difficult to identify certain issue by the short description. The reasons can be very different strarting from
IDeserializationCallbackinterface usage onObjectModel.Modelclass to unefficient implementation of deserialization constructor for some of model fields.Is it possible to get problematic model assembly for profiling purposes?
http://close-to-heart.com/xtensive/longTimeLoadDemo.rar Here is the file set demonstrating the problem I've described. Thank you in advance. Please, read the text file in the archive for usage instructions.
I've found that most of a time application spends in
BinaryFormatter.Deserializemethod(as expected) but calls to our deserialization constructors take only few seconds from whole deserialization cycle. Rest of a timeBinaryFormatterperforms it's internal routines.The only thing I can change is to eliminate
IDeserializationCallbackimplementation atObjectModel.Modelclass. This would decreaseBinaryFormatter's load. I'll try this tomorrow morning.