Hi, I am using the librados python api to do a lot of rapid reads on objects. I am using a callback function def oncomplete(self, completion,data_read) which is called whenever an object has been read. Is there a way to identify which object has completed the read request? I want to measure the latency of each read request. All the objects have variable size and unique names. Would the latency measurements be possible for asynchronous read and writes? Regards, Shayan Saeed