diff options
| author | ling xu <ling1.xu@intel.com> | 2022-11-16 23:29:22 +0800 |
|---|---|---|
| committer | Juan Quintela <quintela@redhat.com> | 2023-02-11 16:51:09 +0100 |
| commit | 04ffce137b6d85ab4e7687e54e4dffcef0a9ab99 (patch) | |
| tree | 857d2986fa10dc683585f56c742038b413f9ae5e /migration/xbzrle.h | |
| parent | e26470501271adf22e4f37d218c2164884ae96fb (diff) | |
AVX512 support for xbzrle_encode_buffer
This commit is the same with [PATCH v6 1/2], and provides avx512 support for xbzrle_encode_buffer
function to accelerate xbzrle encoding speed. Runtime check of avx512
support and benchmark for this feature are added. Compared with C
version of xbzrle_encode_buffer function, avx512 version can achieve
50%-70% performance improvement on benchmarking. In addition, if dirty
data is randomly located in 4K page, the avx512 version can achieve
almost 140% performance gain.
Signed-off-by: ling xu <ling1.xu@intel.com>
Co-authored-by: Zhou Zhao <zhou.zhao@intel.com>
Co-authored-by: Jun Jin <jun.i.jin@intel.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Diffstat (limited to 'migration/xbzrle.h')
| -rw-r--r-- | migration/xbzrle.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/migration/xbzrle.h b/migration/xbzrle.h index a0db507b9c..6feb49160a 100644 --- a/migration/xbzrle.h +++ b/migration/xbzrle.h @@ -18,4 +18,8 @@ int xbzrle_encode_buffer(uint8_t *old_buf, uint8_t *new_buf, int slen, uint8_t *dst, int dlen); int xbzrle_decode_buffer(uint8_t *src, int slen, uint8_t *dst, int dlen); +#if defined(CONFIG_AVX512BW_OPT) +int xbzrle_encode_buffer_avx512(uint8_t *old_buf, uint8_t *new_buf, int slen, + uint8_t *dst, int dlen); +#endif #endif |