[PATCH v2 0/3] app/testpmd: improve sse based macswap

[Vipin Varghese <vipin.varghese@amd.com>]

Goal of the patch series is to improve SSE macswap on x86_64 by
reducing the stalls in backend engine. Original implementation of
the SSE-mac-swap makes loop call to multiple load, shuffle & store.

Using SIMD ISA interleaving, register variable and reducing L1 & L2
cache eviction, we can reduce the stalls for
 - load SSE token exhaustion
 - Shuffle and Load dependency

Build test using meson script:
``````````````````````````````
build-gcc-static
buildtools
build-gcc-shared
build-mini
build-clang-static
build-clang-shared
build-x86-generic

Test Results:
`````````````

Platform-1: AMD EPYC SIENA 8594P @2.3GHz, no boost
Platform-2: AMD EPYC 9554 @3.1GHz, no boost

NIC:
 1) mellanox CX-7 1*200Gbps
 2) intel E810 1*100Gbps
 3) intel E810 2*200Gbps (2CQ-DA2) - loopback
 4) braodcom P2100 2*100Gbps - loopback

------------------------------------------------
TEST IO 64B: baseline <NIC : MPPs>
 - NIC-1: 42.0
 - NIC-2: 82.0
 - NIC-3: 82.45
 - NIC-3: 47.03
------------------------------------------------
TEST MACSWAP 64B: <NIC : Before : After>
 - NIC-1: 31.533 : 31.90
 - NIC-2: 48.0   : 48.9 
 - NIC-3: 48.840 : 49.827
 - NIC-4: 44.3   : 45.5
------------------------------------------------
TEST MACSWAP 128B: <NIC : Before: After>
 - NIC-1: 30.946 : 31.770
 - NIC-2: 47.4   : 48.3
 - NIC-3: 47.979 : 48.503
 - NIC-4: 41.53  : 44.59
------------------------------------------------
TEST MACSWAP 256B: <NIC: Before: After>
 - NIC-1: 32.480 : 33.150
 - NIC-2: 45.29  : 45.571
 - NIC-3: 45.033 : 45.117
 - NIC-4: 36.49  : 37.5
------------------------------------------------


------------------------------------------------
TEST IO 64B: baseline <NIC : MPPs>
 - intel E810 2*200Gbps (2CQ-DA2): 82.49
------------------------------------------------
<NIC intel E810 2*200Gbps (2CQ-DA2): Before : After>
TEST MACSWAP: 1Q 1C1T
 64B: : 45.0 : 45.54
128B: : 44.48 : 44.43
256B: : 42.0 : 41.99
+++++++++++++++++++++++++
TEST MACSWAP: 2Q 2C2T
 64B: : 59.5 : 60.55
128B: : 56.78 : 58.1
256B: : 41.85 : 41.99
------------------------------------------------

Signed-off-by: Vipin Varghese <vipin.varghese@amd.com>

Vipin Varghese (3):
  app/testpmd: add register keyword
  app/testpmd: move offload update
  app/testpmd: interleave SSE SIMD

 app/test-pmd/macswap_sse.h | 27 ++++++++++++++-------------
 1 file changed, 14 insertions(+), 13 deletions(-)

-- 
2.34.1