busybox/coreutils
Denys Vlasenko 1fc520ed28 md5/shaXsum: use FEATURE_COPYBUF_KB to size the buffer instead of fixed 4k
function                                             old     new   delta
md5_sha1_sum_main                                    536     565     +29
hash_file                                            419     401     -18
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 29/-18)             Total: 11 bytes

In my test, for unrolled sha1, COPYBUF_KB=64 increases throughput
from 367 MB/s to 457 MB/s.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-04 00:51:04 +01:00
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