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| author | Stefano Brivio <sbrivio@redhat.com> | 2022-02-28 16:18:44 +0100 |
|---|---|---|
| committer | Stefano Brivio <sbrivio@redhat.com> | 2022-02-28 16:46:28 +0100 |
| commit | 213c397492bdc64cf26b2e7b3877e4a29dc9f8da (patch) | |
| tree | 50f69783c009918e6a1ef5a22b2d7d88407488e2 /test/demo | |
| parent | deca1ebe5093affd581a27855180821a8b6b3079 (diff) | |
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passt, pasta: Run-time selection of AVX2 build
Build-time selection of AVX2 flags and routines is not practical for
distributions, but limiting AVX2 usage to checksum routines with
specific run-time detection doesn't allow for easy performance gains
from auto-vectorisation of batched packet handling routines.
For x86_64, build non-AVX2 and AVX2 binaries, and implement a simple
wrapper replacing the current executable with the AVX2 build if it's
available, and if AVX2 is supported by the current CPU.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Diffstat (limited to 'test/demo')
| -rw-r--r-- | test/demo/passt | 2 | ||||
| -rw-r--r-- | test/demo/pasta | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/test/demo/passt b/test/demo/passt index 76aac86..8838363 100644 --- a/test/demo/passt +++ b/test/demo/passt @@ -29,7 +29,7 @@ sleep 1 say and build it. sleep 1 host cd passt -host make avx2 +host make sleep 1 nl diff --git a/test/demo/pasta b/test/demo/pasta index b2dd327..74fca85 100644 --- a/test/demo/pasta +++ b/test/demo/pasta @@ -169,7 +169,7 @@ say more in the "Performance" section below. sleep 3 ns exit passt exit -passt CFLAGS="-g" make avx2 +passt CFLAGS="-g" make sleep 2 passtb perf record -g ./pasta sleep 2 |