Re: [PATCH net-next v2 2/3] net/udpgso_bench.sh add UDP GSO audit tests

On Tue, May 28, 2019 at 3:24 PM Fred Klassen fklassen@appneta.com wrote:

Audit tests count the total number of messages sent and compares with total number of CMSG received on error queue. Example:

udp gso zerocopy timestamp audit
udp rx:   1599 MB/s  1166414 calls/s
udp tx:   1615 MB/s    27395 calls/s  27395 msg/s
udp rx:   1634 MB/s  1192261 calls/s
udp tx:   1633 MB/s    27699 calls/s  27699 msg/s
udp rx:   1633 MB/s  1191358 calls/s
udp tx:   1631 MB/s    27678 calls/s  27678 msg/s
Summary over 4.000 seconds...
sum udp tx:   1665 MB/s      82772 calls (27590/s)      82772 msgs (27590/s)
Tx Timestamps:               82772 received                 0 errors
Zerocopy acks:               82772 received                 0 errors

Errors are thrown if CMSG count does not equal send count, example:

Summary over 4.000 seconds...
sum tcp tx:   7451 MB/s     493706 calls (123426/s)     493706 msgs (123426/s)
./udpgso_bench_tx: Unexpected number of Zerocopy completions:    493706 expected    493704 received

Also reduce individual test time from 4 to 3 seconds so that overall test time does not increase significantly.

Signed-off-by: Fred Klassen fklassen@appneta.com

Acked-by: Willem de Bruijn willemb@google.com

If respinning the series, please add a comment about adding -P to the tcp zerocopy test.