[dpdk-dev] [Bug 486] i40e driver has very bad performance when VXLAN TSO is enabled

[bugzilla@dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=486

Xiaoyun Li (xiaoyun.li@intel.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |xiaoyun.li@intel.com
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #2 from Xiaoyun Li (xiaoyun.li@intel.com) ---
Using testpmd to test vxlan tso. Function works. And after comparing the perf
with cases without vxlan tso, the perf is similar. Can't see obvious drop.

Tested with both 19.11 & newest commit b8d81e9cbf5e. Both work fine. So it's
not a bug of i40e driver.

Test steps:

ixia generates packets with len 1500, and udp dst port 4789 (vxlan), and outer
udp payload with vxlan and inner tcp packets.

ixia rx port to observe the bytes receive rate. Both cases can get about 3GBps
perf (using XXV710).

If using vxlan tso:

./build/app/dpdk-testpmd -l 28,29,30,31 -n 4 -w 86:00.0 -w 86:00.1 – -i

port stop all

csum set ip hw 0

csum set udp hw 0

csum set tcp hw 0

csum set outer-ip hw 0

csum set outer-udp hw 0

csum set sctp hw 0

csum parse-tunnel on 0

csum set ip hw 1

csum set udp hw 1

csum set tcp hw 1

csum set outer-ip hw 1

csum set outer-udp hw 1

csum set sctp hw 1

csum parse-tunnel on 1

tunnel_tso set 800 1

rx_vxlan_port add 4789 0

set fwd csum

port start all

start



If without vxlan tso:

./build/app/dpdk-testpmd -l 28,29,30,31 -n 4 -w 86:00.0 -w 86:00.1 – -i

rx_vxlan_port add 4789 0

start

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