python - Sleep takes 86% of time in rabbitpy consumer? -

i found rather interesting problem today. have queue 2k messages in it. consumer:

import rabbitpy rabbitpy.connection('amqp://guest:guest@localhost:5672/%2f') conn:     conn.channel() channel:         queue = rabbitpy.queue(channel, 'example')         message in queue.consume_messages():             message.ack() 

takes 41 seconds these messages , ack them. (messages vary 4kb 52kb) publisher, however, took 15 seconds publish them.

upon profiling, found there call sleep spend 86% of time. this, application, not acceptable. me rid of sleep? (i'm ok if cpu cycles wasted or whatever till message arrives.)

zoomed in screenshot