On 5 Sep 2019, at 18:21, William Tu wrote:
Did some more testing and with PVP I see a performance decrease, with
physical to physical I see an increase.
Tests are performed with a port redirect open flow rule on an ixgbe
(Xeon E5-2690 v4 2.60GHz):
+-----------+-----------------+---------+---------+---------+---------+---------+---------+--------+
| PVP | Number of flows | 64 | 128 | 256 | 512
|
768 | 1024 | 1514 |
+-----------+-----------------+---------+---------+---------+---------+---------+---------+--------+
| master | 1000 | 737896 | 700643 | 682915 | 648386
|
621792 | 582821 | 527899 |
| Patch | 1000 | 734179 | 696515 | 676712 | 646536
|
619600 | 578546 | 519965 |
+-----------+-----------------+---------+---------+---------+---------+---------+---------+--------+
+-----------+-----------------+---------+---------+---------+---------+---------+---------+--------+
| Port2Port | Number of flows | 64 | 128 | 256 | 512
|
768 | 1024 | 1514 |
+-----------+-----------------+---------+---------+---------+---------+---------+---------+--------+
| master | 1000 | 3351114 | 3236581 | 3143710 | 2349598
|
1586276 | 1197304 | 814854 |
| Patch | 1000 | 3571733 | 3488697 | 3448908 | 2349593
|
1586276 | 1197304 | 814854 |
+-----------+-----------------+---------+---------+---------+---------+---------+---------+--------+
Hi Eleco,
I'm wondering why you get only ~3.3Mpps for P2P test. Using ixgbe, I
usually get at
least 6Mpps using single flow (a single 64B UDP packet hitting single
OpenFlow rule)
Do you think it's due to have 1000 flows in your setup?
I did a quick test and the number gets a bit better with fewer flows:
"Physical loopback test, L3 flows[port redirect]"
,Packet size
Number of flows,64
1,4111768
100,3904664
1000,3573564
I’m using a single of rule “in_port=eno1 actions=IN_PORT”, with a
single card, i.e. the same card in and out.
Another possible overhead is due to no rxhash in AF_XDP, so there is
extra
overhead doing flow_hash_5tuple and dp_packet_set_rss_hash
But this should not influence the difference between our tests. Do you
use a single card/port in and out? I’m using a single queue and single
PMD thread.
Regards,
William
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