Hello All!

I have Bitcoin Core 0.11.1 Linux x64 and my wallet.dat size is about 480Mb (~52000 transactions).

So the problem is a lot of data writing on disk. By "iotop -o -a" I see that bitcoind writes about 4.2Gb on disk in 15 minutes. It's too much.
I think wallet.dat writes on disk each time when new transaction comes or something similar.

Is is possible to turn on something caching for that wallet.dat will not writtes to disk so often?
Or is it possible to write any changes to the temporary file, and save wallet.dat no more than once per hour?

Because the problem is too large volume disk writes.

Please help!