> Do you really care about latency? Or just overall performance (which is > limited by the sum of the per-element latency)?
In the end I care about port to port latency which is the sum across all the elements. However, I would like to get a feel of the most time consuming element in the path so that I can tweak it for the last drop. > Are these packets unique already? or is expensive_uniquify being called? No expensive uniquify calls. Checksum check is false too. I have taken the measurements when the mappings have been installed. i.e - at least one packet of the flow was seen. I have used user level click with file being read using FromDump() and did a performance measurement - that figure comes to less than 20us. The kernel level version of click with live traffic should at least beat that figure. I think I will do a oprofile measurement and see how the cycles are being consumed. In the meantime, if you guys think that there is a better/different approach to break down the latency that woule be very much appreciated. _______________________________________________ click mailing list [email protected] https://amsterdam.lcs.mit.edu/mailman/listinfo/click
