如何提高反序列化速度？
使用 BinaryFormatter 进行序列化/反序列化，生成的序列化文件大小约为 80MB。反序列化需要几分钟。我该如何改进这一点？这是反序列化代码：
public static Universe DeserializeFromFile(string filepath)
{
Universe universe = null;
FileStream fs = new FileStream(filepath, FileMode.Open);
BinaryFormatter bf = new BinaryFormatter();
try
{
universe = (Universe)bf.Deserialize(fs);
}
catch (SerializationException e)
{
Console.WriteLine("Failed to deserialize. Reason: " + e.Message);
throw;
}
finally
{
fs.Close();
}
return universe;
}
也许在反序列化之前将所有内容读取到内存或使用其他序列化技术？
Serializing/deserializing with BinaryFormatter, resulting serialized file is ~80MB in size. The deserialization takes a few minutes. How could I improve on this? Here's the deserialization code:
public static Universe DeserializeFromFile(string filepath)
{
Universe universe = null;
FileStream fs = new FileStream(filepath, FileMode.Open);
BinaryFormatter bf = new BinaryFormatter();
try
{
universe = (Universe)bf.Deserialize(fs);
}
catch (SerializationException e)
{
Console.WriteLine("Failed to deserialize. Reason: " + e.Message);
throw;
}
finally
{
fs.Close();
}
return universe;
}
Maybe read all to memory prior to deserializing or use some other serialization technique?
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尝试
UnsafeDeserialize。据说可以提高速度。Try
UnsafeDeserialize. It is said to improve speed.我知道这是一个老问题，但偶然发现了一个解决方案，可以大大提高我的反序列化速度。如果您有大量数据，这非常有用。
将目标框架升级到 4.7.1+ 并在 app.config 中启用以下开关。
资料来源：
BinaryFormatter
AppContextSwitchOverrides
I know this is an old question, but stumbled upon a solution that improved my deserialization speed substantially. This is useful if you have large sets of data.
Upgrade your target framework to 4.7.1+ and enable the following switch in your app.config.
Sources:
BinaryFormatter
AppContextSwitchOverrides
请查看此线程。
Please take a look at this thread.
尝试首先将文件一次性读入内存流，然后使用内存流进行反序列化。
Try reading the file into a memory stream first in one go, then deserialize using the memory stream.
数据有多复杂？如果它是一个对象树（而不是一个完整的图），那么您可能会通过尝试protobuf-net。它通常非常容易适应现有的类，并且通常更小、更快且更不易损坏（您可以更改对象模型而不会破坏数据）。
披露：我是作者，所以可能有偏见 - 但这确实并不可怕......不过，我很乐意借一些*时间来帮助您尝试。
*=在合理范围内
How complex is the data? If it is an object tree (rather than a full graph), then you might get some interesting results from trying protobuf-net. It is generally pretty easy to fit onto existing classes, and is generally much smaller, faster, and less brittle (you can change the object model without trashing the data).
Disclosure: I'm the author, so might be biased - but it really isn't terrible... I'd happily lend some* time to help you try it, though.
*=within reason
在Universe类中实现ISerialized
Implement ISerializable in the Universe class