observing 1000 items on a node takes 1 second on average

from rohit:
Ran observe on one node over 1000 items only, time taken to persist one key is around 1 second,
Here is the snippet of code as well which i ran over observe

for key in keys:
client.set(key, 0, 0, "neval")
self.log.info("Time1:- %s" % time.localtime())
opaque, rep_time, persist_time, persisted = client.observe(key)
self.log.info("##########key:-%s################" % (key))
self.log.info("Persisted:- %s" % (persisted))
self.log.info("Time2:- %s" % time.localtime())