krak/zstd
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Code Issues Releases 1 Activity

bench pay attention to variable block sizes

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This commit is contained in:
Yann Collet 2016-01-20 15:39:06 +01:00
parent fba6aed175
commit 1840d6af33
2 changed files with 6 additions and 4 deletions
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6
lib/zstd_static.h
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@ -284,8 +284,8 @@ static const ZSTD_parameters ZSTD_defaultParameters[4][ZSTD_MAX_CLEVEL+1] = {
/* W, C, H, S, L, strat */
{ 0, 17, 12, 12, 1, 4, ZSTD_fast }, /* level 0 - never used */
{ 0, 17, 12, 13, 1, 6, ZSTD_fast }, /* level 1 */
{ 0, 17, 15, 16, 1, 5, ZSTD_fast }, /* level 2 */
{ 0, 17, 16, 17, 1, 5, ZSTD_fast }, /* level 3 */
{ 0, 17, 14, 16, 1, 5, ZSTD_fast }, /* level 2 */
{ 0, 17, 15, 17, 1, 5, ZSTD_fast }, /* level 3 */
{ 0, 17, 13, 15, 2, 4, ZSTD_greedy }, /* level 4 */
{ 0, 17, 15, 17, 3, 4, ZSTD_greedy }, /* level 5 */
{ 0, 17, 14, 17, 3, 4, ZSTD_lazy }, /* level 6 */
@ -308,7 +308,7 @@ static const ZSTD_parameters ZSTD_defaultParameters[4][ZSTD_MAX_CLEVEL+1] = {
/* W, C, H, S, L, strat */
{ 0, 0, 0, 0, 0, 0, ZSTD_fast }, /* level 0 - never used */
{ 0, 14, 14, 14, 1, 4, ZSTD_fast }, /* level 1 */
{ 0, 14, 14, 16, 1, 4, ZSTD_fast }, /* level 1 */
{ 0, 14, 14, 16, 1, 4, ZSTD_fast }, /* level 2 */
{ 0, 14, 14, 14, 5, 4, ZSTD_greedy }, /* level 3 */
{ 0, 14, 14, 14, 8, 4, ZSTD_greedy }, /* level 4 */
{ 0, 14, 11, 14, 6, 4, ZSTD_lazy }, /* level 5 */

4
programs/bench.c
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@ -220,6 +220,7 @@ static int BMK_benchMem(const void* srcBuffer, size_t srcSize,
{
const size_t blockSize = (g_blockSize ? g_blockSize : srcSize) + (!srcSize); /* avoid div by 0 */
const U32 maxNbBlocks = (U32) ((srcSize + (blockSize-1)) / blockSize) + nbFiles;
size_t largestBlockSize = 0;
blockParam_t* const blockTable = (blockParam_t*) malloc(maxNbBlocks * sizeof(blockParam_t));
const size_t maxCompressedSize = ZSTD_compressBound(srcSize) + (maxNbBlocks * 1024); /* add some room for safety */
void* const compressedBuffer = malloc(maxCompressedSize);
@ -260,6 +261,7 @@ static int BMK_benchMem(const void* srcBuffer, size_t srcSize,
cPtr += blockTable[nbBlocks].cRoom;
resPtr += thisBlockSize;
remaining -= thisBlockSize;
if (thisBlockSize > largestBlockSize) largestBlockSize = thisBlockSize;
}
}
}
@ -292,7 +294,7 @@ static int BMK_benchMem(const void* srcBuffer, size_t srcSize,
milliTime = BMK_GetMilliStart();
while (BMK_GetMilliSpan(milliTime) < TIMELOOP)
{
ZSTD_compressBegin_advanced(refCtx, ZSTD_getParams(cLevel, dictBufferSize+blockSize));
ZSTD_compressBegin_advanced(refCtx, ZSTD_getParams(cLevel, dictBufferSize+largestBlockSize));
ZSTD_compress_insertDictionary(refCtx, dictBuffer, dictBufferSize);
for (blockNb=0; blockNb<nbBlocks; blockNb++)
{