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change update rate to 12/11/11/11

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better for large files, and sources with relatively "stable" entropy,
like silesia.tar.
slightly worse for files with rapidly changing entropy,
like Calgary.tar/.

Updated small files tests in fuzzer
This commit is contained in:
Yann Collet
2021-09-08 14:05:57 -07:00
parent ef78611c26
commit 7fce9a41b5
2 changed files with 16 additions and 18 deletions
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lib/compress/zstd_opt.c
+4 -4
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@@ -228,10 +228,10 @@ ZSTD_rescaleFreqs(optState_t* const optPtr,
} else { /* new block : re-use previous statistics, scaled down */
if (compressedLiterals)
optPtr->litSum = ZSTD_scaleStats(optPtr->litFreq, MaxLit, 11);
optPtr->litLengthSum = ZSTD_scaleStats(optPtr->litLengthFreq, MaxLL, 10);
optPtr->matchLengthSum = ZSTD_scaleStats(optPtr->matchLengthFreq, MaxML, 10);
optPtr->offCodeSum = ZSTD_scaleStats(optPtr->offCodeFreq, MaxOff, 10);
optPtr->litSum = ZSTD_scaleStats(optPtr->litFreq, MaxLit, 12);
optPtr->litLengthSum = ZSTD_scaleStats(optPtr->litLengthFreq, MaxLL, 11);
optPtr->matchLengthSum = ZSTD_scaleStats(optPtr->matchLengthFreq, MaxML, 11);
optPtr->offCodeSum = ZSTD_scaleStats(optPtr->offCodeFreq, MaxOff, 11);
}
ZSTD_setBasePrices(optPtr, optLevel);