netdev - RE: Using ethernet device as efficient small packet generator

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Date:	Mon, 24 Jan 2011 22:51:08 +0200
From:	"juice" <juice@...gman.org>
To:	"Eric Dumazet" <eric.dumazet@...il.com>,
	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>,
	"Loke, Chetan" <chetan.loke@...scout.com>,
	"Jon Zhou" <jon.zhou@...u.com>,
	"Stephen Hemminger" <shemminger@...tta.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: Using ethernet device as efficient small packet generator



> Please check what numbers you can get using dummy0 device instead of
> real ethernet driver.
>
> Here : (E5540  @ 2.53GHz) clone = 1
>
> Result: OK: 34775941(c34775225+d716) nsec, 100000000 (60byte,0frags)
>   2875551pps 1380Mb/sec (1380264480bps) errors: 0
>

My result on the machine (W3503 @ 2.40GHz):

Params: count 10000000  min_pkt_size: 60  max_pkt_size: 60
     frags: 0  delay: 0  clone_skb: 0  ifname: dummy0
     flows: 0 flowlen: 0
     queue_map_min: 0  queue_map_max: 0
     dst_min: 10.10.11.2  dst_max:
     src_min:   src_max:
     src_mac: b6:b2:a2:f4:8e:dc dst_mac: 00:04:23:08:91:dc
     udp_src_min: 9  udp_src_max: 9  udp_dst_min: 9  udp_dst_max: 9
     src_mac_count: 0  dst_mac_count: 0
     Flags:
Current:
     pkts-sofar: 10000000  errors: 0
     started: 1295902048722173us  stopped: 1295902052312514us idle: 3664us
     seq_num: 10000001  cur_dst_mac_offset: 0  cur_src_mac_offset: 0
     cur_saddr: 0x0  cur_daddr: 0x20b0a0a
     cur_udp_dst: 9  cur_udp_src: 9
     cur_queue_map: 0
     flows: 0
Result: OK: 3590341(c3586677+d3664) usec, 10000000 (60byte,0frags)
  2785250pps 1336Mb/sec (1336920000bps) errors: 0


Yours, Jussi Ohenoja


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