update hrlog rule to favor compression ratio a bit more at low levels

2025-02-10 10:46:37 -08:00
parent 7c5b6002c9
commit 72406b71c3
3 changed files with 26 additions and 26 deletions
@@ -141,7 +141,7 @@ void ZSTD_ldm_adjustParameters(ldmParams_t* params,
    if (params->hashRateLog == 0) {
        assert(1 <= (int)cParams->strategy && (int)cParams->strategy <= 9);
        /* mapping: strat1 -> rate8 ... strat9 -> rate4*/
-        params->hashRateLog = 9 - ((cParams->strategy+1)/2);
+        params->hashRateLog = 7 - (cParams->strategy/3);
    }
    if (params->hashLog == 0) {
        params->hashLog = MAX(ZSTD_HASHLOG_MIN, params->windowLog - params->hashRateLog);