Hello all.

I would like to know what kinds of performance changes I might expect to see if I switched from the generic NIC driver to a device specific driver (e1000e in my case). With the generic NIC driver I am currently seeing ecrt_master_receive calls averaging about 10us and ecrt_master_send times that are a few micro seconds longer. I don't need exact numbers just a rough idea. Would using the custom e1000e driver reduce times by an order of magnitude, 50%, 5%?

I would also like to know how sensitive the times are to PDO size? I've tried registering fewer PDOs (i.e. ecrt_domain_reg_pdo_entry_list) and the difference in transmit/receive times seems to be nearly unaffected. In addition I tried reducing the number of devices attached to my EK-1100 coupler and that also had little to no change in run times. Are those results as expected?

Thanks

--
-john

To be or not to be, that is the question
                2b || !2b
(0b10)*(0b1100010) || !(0b10)*(0b1100010)
        0b11000100 || !0b11000100
        0b11000100 ||  0b00111011
               0b11111111
255, that is the answer.

_______________________________________________
etherlab-users mailing list
etherlab-users@etherlab.org
http://lists.etherlab.org/mailman/listinfo/etherlab-users

Reply via email to