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| author | Denys Vlasenko | 2021-12-30 13:07:12 +0100 |
|---|---|---|
| committer | Denys Vlasenko | 2021-12-30 13:17:16 +0100 |
| commit | 25aadc893d21b35f7d34a9d1edc843632e7abd8f (patch) | |
| tree | f8d2d860f06eeccb254e071e39213bc2a3f723ef /libbb/Config.src | |
| parent | 9173c9cce48dc4c867fb06bb72e8c762740c5c86 (diff) | |
| download | busybox-25aadc893d21b35f7d34a9d1edc843632e7abd8f.zip busybox-25aadc893d21b35f7d34a9d1edc843632e7abd8f.tar.gz | |
libbb/sha1: add config-selectable fully unrolled version, closes 14391
function old new delta
sha1_process_block64 364 4167 +3803
static.rconsts 16 - -16
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(add/remove: 0/1 grow/shrink: 1/0 up/down: 3803/-16) Total: 3787 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'libbb/Config.src')
| -rw-r--r-- | libbb/Config.src | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/libbb/Config.src b/libbb/Config.src index 24b31fa..13188ef 100644 --- a/libbb/Config.src +++ b/libbb/Config.src @@ -42,21 +42,32 @@ config MD5_SMALL default 1 # all "fast or small" options default to small range 0 3 help - Trade binary size versus speed for the md5sum algorithm. + Trade binary size versus speed for the md5 algorithm. Approximate values running uClibc and hashing linux-2.4.4.tar.bz2 were: - value user times (sec) text size (386) - 0 (fastest) 1.1 6144 - 1 1.4 5392 - 2 3.0 5088 - 3 (smallest) 5.1 4912 + value user times (sec) text size (386) + 0 (fastest) 1.1 6144 + 1 1.4 5392 + 2 3.0 5088 + 3 (smallest) 5.1 4912 + +config SHA1_SMALL + int "SHA1: Trade bytes for speed (0:fast, 3:slow)" + default 3 # all "fast or small" options default to small + range 0 3 + help + Trade binary size versus speed for the sha1 algorithm. + throughput MB/s size of sha1_process_block64 + value 486 x86-64 486 x86-64 + 0 339 374 4149 4167 + 1,2,3 200 195 358 380 config SHA3_SMALL int "SHA3: Trade bytes for speed (0:fast, 1:slow)" default 1 # all "fast or small" options default to small range 0 1 help - Trade binary size versus speed for the sha3sum algorithm. + Trade binary size versus speed for the sha3 algorithm. SHA3_SMALL=0 compared to SHA3_SMALL=1 (approximate): 64-bit x86: +270 bytes of code, 45% faster 32-bit x86: +450 bytes of code, 75% faster |