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This commit is contained in:
Yann Collet 2015-10-27 13:12:25 +01:00
parent 2c6992e1dc
commit b315bc86e1
2 changed files with 52 additions and 13 deletions
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10
lib/zstdhc_static.h
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@ -94,13 +94,13 @@ static const ZSTD_HC_parameters ZSTD_HC_defaultParameters[ZSTD_HC_MAX_CLEVEL+1]
{ 21, 21, 23, 8 }, /*10 */
{ 21, 21, 23, 9 }, /*11 */
{ 21, 21, 23, 10 }, /*12 */
{ 22, 22, 24, 9 }, /*13 */
{ 22, 22, 24, 10 }, /*14 */
{ 22, 22, 23, 9 }, /*13 */
{ 22, 22, 23, 10 }, /*14 */
{ 23, 23, 23, 10 }, /*15 */
{ 24, 23, 22, 11 }, /*16 */
{ 24, 23, 23, 11 }, /*16 */
{ 24, 24, 23, 11 }, /*17 */
{ 24, 24, 22, 12 }, /*18 */
{ 24, 24, 22, 13 }, /*19 */
{ 24, 24, 23, 12 }, /*18 */
{ 24, 24, 23, 13 }, /*19 */
{ 25, 25, 25, 22 }, /*20 - ultra-slow */
};

55
programs/paramgrill.c
View File

@ -120,6 +120,7 @@ static U32 g_blockSize = 0;
static U32 g_rand = 1;
static U32 g_singleRun = 0;
static U32 g_target = 0;
static U32 g_noSeed = 0;
static ZSTD_HC_parameters g_params = { 0, 0, 0, 0 };
void BMK_SetNbIterations(int nbLoops)
@ -133,6 +134,28 @@ void BMK_SetNbIterations(int nbLoops)
* Private functions
*********************************************************/
static unsigned BMK_highbit(U32 val)
{
# if defined(_MSC_VER) /* Visual */
unsigned long r;
_BitScanReverse(&r, val);
return (unsigned)r;
# elif defined(__GNUC__) && (__GNUC__ >= 3) /* GCC Intrinsic */
return 31 - __builtin_clz(val);
# else /* Software version */
static const int DeBruijnClz[32] = { 0, 9, 1, 10, 13, 21, 2, 29, 11, 14, 16, 18, 22, 25, 3, 30, 8, 12, 20, 28, 15, 17, 24, 7, 19, 27, 23, 6, 26, 5, 4, 31 };
U32 v = val;
int r;
v |= v >> 1;
v |= v >> 2;
v |= v >> 4;
v |= v >> 8;
v |= v >> 16;
r = DeBruijnClz[(U32)(v * 0x07C4ACDDU) >> 27];
return r;
# endif
}
#if defined(BMK_LEGACY_TIMER)
static int BMK_GetMilliStart(void)
@ -242,6 +265,7 @@ typedef struct
#define MIN(a,b) ( (a) < (b) ? (a) : (b) )
static size_t BMK_benchParam(BMK_result_t* resultPtr,
const void* srcBuffer, size_t srcSize,
ZSTD_HC_CCtx* ctx,
@ -482,8 +506,10 @@ static void playAround(FILE* f, winnerInfo_t* winners,
const void* srcBuffer, size_t srcSize,
ZSTD_HC_CCtx* ctx)
{
const U32 srcLog = BMK_highbit((U32)( (g_blockSize ? g_blockSize : srcSize) -1))+1;
int nbVariations = 0;
const int startTime = BMK_GetMilliStart();
while (BMK_GetMilliSpan(startTime) < g_maxVariationTime)
{
ZSTD_HC_parameters p = params;
@ -515,6 +541,7 @@ static void playAround(FILE* f, winnerInfo_t* winners,
}
/* validate new conf */
if (p.windowLog > srcLog) continue;
if (p.windowLog > ZSTD_HC_WINDOWLOG_MAX) continue;
if (p.windowLog < MAX(ZSTD_HC_WINDOWLOG_MIN, p.chainLog)) continue;
if (p.chainLog > p.windowLog) continue;
@ -545,7 +572,7 @@ static void BMK_selectRandomStart(
ZSTD_HC_CCtx* ctx)
{
U32 id = FUZ_rand(&g_rand) % (ZSTD_HC_MAX_CLEVEL+1);
if (id==0)
if ((id==0) || (winners[id].params.windowLog==0))
{
/* totally random entry */
ZSTD_HC_parameters p;
@ -571,6 +598,7 @@ static void BMK_benchMem(void* srcBuffer, size_t srcSize)
int i;
const char* rfName = "grillResults.txt";
FILE* f;
const U32 srcLog = BMK_highbit((U32)( (g_blockSize ? g_blockSize : srcSize) -1))+1;
if (g_singleRun)
{
@ -589,10 +617,10 @@ static void BMK_benchMem(void* srcBuffer, size_t srcSize)
else
{
/* baseline config for level 9 */
params.windowLog = 19;
params.chainLog = 19;
params.windowLog = MIN(srcLog, 19);
params.chainLog = MIN(params.windowLog, 19);
params.hashLog = 19;
params.searchLog = 9;
params.searchLog = MIN(params.chainLog, 9);
BMK_benchParam(&testResult, srcBuffer, srcSize, ctx, params);
g_cSpeedTarget[9] = (testResult.cSpeed * 15) >> 4;
}
@ -604,9 +632,18 @@ static void BMK_benchMem(void* srcBuffer, size_t srcSize)
g_cSpeedTarget[i] = (g_cSpeedTarget[i-1] * 181) >> 8;
/* populate initial solution */
for (i=1; i<=ZSTD_HC_MAX_CLEVEL; i++)
BMK_seed(winners, seedParams[i], srcBuffer, srcSize, ctx);
BMK_seed(winners, params, srcBuffer, srcSize, ctx);
{
const int maxSeeds = g_noSeed ? 1 : ZSTD_HC_MAX_CLEVEL;
//BMK_seed(winners, params, srcBuffer, srcSize, ctx);
for (i=1; i<=maxSeeds; i++)
{
params = seedParams[i];
params.windowLog = MIN(srcLog, params.windowLog);
params.chainLog = MIN(params.windowLog, params.chainLog);
params.searchLog = MIN(params.chainLog, params.searchLog);
BMK_seed(winners, params, srcBuffer, srcSize, ctx);
}
}
BMK_printWinners(f, winners, srcSize);
/* start tests */
@ -762,7 +799,9 @@ int main(int argc, char** argv)
{
char* argument = argv[i];
if(!argument) continue; // Protection if argument empty
if(!argument) continue; /* Protection if argument empty */
if(!strcmp(argument,"--no-seed")) { g_noSeed = 1; continue; }
/* Decode command (note : aggregated commands are allowed) */
if (argument[0]=='-')