ddidderr/zstd-rs
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minor compression gain

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This commit is contained in:
Yann Collet
2016-01-31 00:58:06 +01:00
parent a6f54ddb2c
commit e93d6ced17
6 changed files with 95 additions and 57 deletions
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programs/bench.c
+8 -8
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@@ -308,7 +308,7 @@ static int BMK_benchMem(const void* srcBuffer, size_t srcSize,
ratio = (double)srcSize / (double)cSize;
DISPLAY("%2i-%-17.17s :%10i ->%10i (%5.3f),%6.1f MB/s\r", loopNb, displayName, (int)srcSize, (int)cSize, ratio, (double)srcSize / fastestC / 1000.);
#if 0
#if 1
/* Decompression */
memset(resultBuffer, 0xD6, srcSize); /* warm result buffer */
@@ -317,18 +317,17 @@ static int BMK_benchMem(const void* srcBuffer, size_t srcSize,
while (BMK_GetMilliStart() == milliTime);
milliTime = BMK_GetMilliStart();
ZSTD_decompressBegin_usingDict(refDCtx, dictBuffer, dictBufferSize);
for ( ; BMK_GetMilliSpan(milliTime) < TIMELOOP; nbLoops++) {
ZSTD_decompressBegin_usingDict(refDCtx, dictBuffer, dictBufferSize);
for (blockNb=0; blockNb<nbBlocks; blockNb++) {
size_t regenSize;
regenSize = ZSTD_decompress_usingPreparedDCtx(dctx, refDCtx,
size_t regenSize = ZSTD_decompress_usingPreparedDCtx(dctx, refDCtx,
blockTable[blockNb].resPtr, blockTable[blockNb].srcSize,
blockTable[blockNb].cPtr, blockTable[blockNb].cSize);
if (ZSTD_isError(regenSize))
EXM_THROW(3, "ZSTD_decompress_usingPreparedDCtx() failed on block %u : %s",
if (ZSTD_isError(regenSize)) {
DISPLAY("ZSTD_decompress_usingPreparedDCtx() failed on block %u : %s",
blockNb, ZSTD_getErrorName(regenSize));
goto _findError;
}
blockTable[blockNb].resSize = regenSize;
} }
@@ -337,6 +336,7 @@ static int BMK_benchMem(const void* srcBuffer, size_t srcSize,
DISPLAY("%2i-%-17.17s :%10i ->%10i (%5.3f),%6.1f MB/s ,%6.1f MB/s\r", loopNb, displayName, (int)srcSize, (int)cSize, ratio, (double)srcSize / fastestC / 1000., (double)srcSize / fastestD / 1000.);
/* CRC Checking */
_findError:
crcCheck = XXH64(resultBuffer, srcSize, 0);
if (crcOrig!=crcCheck) {
size_t u;