There's no way to get the managed object size in memory

[almez]

Hi,

There is no way to get the actual (or even an approximate) size of the cached object in the memory.

The case is, we have +100 customized cache for different purposes to accelerate our platform, for each cache we have

• Cache MaxSize
• Cache ConsumedSize
• Cache RemainingSize

Whenever we insert some object to be cached, we should detect its size to re-calculate aforementioned cache properties.

I know that's a complex issue and depends on many factors, so far we have some workarounds but non of them is official and we afraid to be changed in any minor or major release.

Should you add any API to get the object size in the memory ? or at least Type size and then we can add the object-specific data length.

Related Topics

Workaround 1
What Microsoft says about this issue

[JanEggers]

you can use structs for your cache items and Marshal.Sizeof

[almez]

It requires changing the structure that we've built the application with.
It may consider a workaround but not permanent solution

[danmoseley]

Issue moved to dotnet/corefx #25396 via ZenHub