Performance problems when deserializing about bson4jackson HOT 6 CLOSED

I did a little bit of profiling:

• most time (about 50%) is lost in LittleEndianInputStream.readUTF.
• UTF_8.newDecorder takes about 6% of the time. Maybe the CharsetDecorder instance might be cached?
• about 6% in CharsetDecorder.decode

from bson4jackson.

Strange. I'll check this and get back to you.

Michel

from bson4jackson.

I tried to reproduce your example, but I get an exception reading your sample file. I suppose it's base64 encoded, but still no luck. Maybe you can send me the original file and also your test code via email? Thanks a lot!

Michel

from bson4jackson.

No, it is hex encoded. Sorry - should have mentioned that.
I will create an executable project. Just give me a few days.

from bson4jackson.

Oh. I should have figured that out myself!

No worries. No need for a sample project. I was able to reproduce the issue. I'll see what I can do.

Michel

from bson4jackson.

OK. I was able to improve the performance a lot by replacing ByteArrayInputStream and BufferedInputStream from the JDK by my own implementations that are not thread safe (96d09f8).

However, I think there's still room for improvement. I will continue work on this issue.

Cheers,
Michel

from bson4jackson.