batch style of updates?

[Suteertha Guha]

Hi,

Just like there is 

public <T> Iterable<Key<T>> insert(Iterable<T> entities, com.mongodb.WriteConcern wc) 

which allows batching of insert operations, 

is there an equivalent way of doing updates?

My application requires very fast rate of updates. One update at a time, even on multiple threads, is not meeting the goals.

For example, I can do a batch of 1K inserts in 400ms, but updates on the same document structure takes about 6s for every 1K documents.

Thanks in advance for any help or design pointers.

Suteertha