Jeff Garzik wrote:
David Acker wrote:
Let me know if there is any other information I can provide you. I
will look through the code to see what could be going on with your
machine. I will also look into reproducing these results with a newer
kernel. This may be tricky since compulab's patches are pretty stale
and don't always apply easily.
pktgen outputs for the various cases modified/unmodified[/others?] would
be nice, if you have a spot of time.
Jeff
I am not familiar with pktgen but I seem to have it working for a simple test.
I edited the 1-1 example from ftp://robur.slu.se/pub/Linux/net-development/pktgen-testing/examples/ . The results with
and without the patch are below. Let me know if you want any other tests run. I obtained a PCI to miniPCI adapter that
will let me test my miniPCI based e100s on my main dev box. I will work on reproducing Intel's results tomorrow as time
permits. I am also still trying to get time to work on a recent kernel merge. Not a lot changed in the 100 since
2.6.18.4 except a flip from readX/writeX to ioreadX/iowriteX.
-Ack
cm-debian:/tmp# ./pktgen.conf-1-1
Removing all devices
Adding eth0
Setting max_before_softirq 10000
Configuring /proc/net/pktgen/eth0
Running... ctrl^C to stop
Done
Here are the results on 2.6.18.4 with the patch I submitted on my embedded
system.
cm-debian:/tmp# cat /proc/net/pktgen/eth0
Params: count 10000000 min_pkt_size: 60 max_pkt_size: 60
frags: 0 delay: 0 clone_skb: 1000000 ifname: eth0
flows: 0 flowlen: 0
dst_min: 192.168.1.40 dst_max:
src_min: src_max:
src_mac: 00:09:30:FF:F2:F6 dst_mac: 00:19:B9:0B:45:8E
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: 14852031282115us stopped: 14852181463422us idle: 918us
seq_num: 10000011 cur_dst_mac_offset: 0 cur_src_mac_offset: 0
cur_saddr: 0x2901a8c0 cur_daddr: 0x2801a8c0
cur_udp_dst: 9 cur_udp_src: 9
flows: 0
Result: OK: 150181307(c150180389+d918) usec, 10000000 (60byte,0frags)
66586pps 31Mb/sec (31961280bps) errors: 0
and here are the results without the patch:
cm-debian:/tmp# cat /proc/net/pktgen/eth0
Params: count 10000000 min_pkt_size: 60 max_pkt_size: 60
frags: 0 delay: 0 clone_skb: 1000000 ifname: eth0
flows: 0 flowlen: 0
dst_min: 192.168.1.40 dst_max:
src_min: src_max:
src_mac: 00:09:30:FF:F2:F6 dst_mac: 00:19:B9:0B:45:8E
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: 14864204332576us stopped: 14864355451225us idle: 1431us
seq_num: 10000011 cur_dst_mac_offset: 0 cur_src_mac_offset: 0
cur_saddr: 0x2901a8c0 cur_daddr: 0x2801a8c0
cur_udp_dst: 9 cur_udp_src: 9
flows: 0
Result: OK: 151118649(c151117218+d1431) usec, 10000000 (60byte,0frags)
66173pps 31Mb/sec (31763040bps) errors: 0
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