#include <iprt/asm.h>

#include <iprt/assert.h>

#include <iprt/crc.h>

#include <iprt/ctype.h>

#include <iprt/err.h>

#include <iprt/file.h>

#include <iprt/getopt.h>

#include <iprt/initterm.h>

#include <iprt/md5.h>

#include <iprt/sha.h>

#include <iprt/mem.h>

#include <iprt/param.h>

#include <iprt/stream.h>

#include <iprt/string.h>

#include <iprt/time.h>

#include <iprt/zip.h>

static size_t g_cPages = 20*_1M / PAGE_SIZE;

static size_t g_cbPages;

static uint8_t *g_pabSrc;

static uint8_t *g_pabDecompr;

static uint8_t *g_pabCompr;

static size_t g_cbCompr;

static size_t g_offComprIn;

static size_t g_cbComprAlloc;

static DECLCALLBACK(int) ComprOutCallback(void *pvUser, const void *pvBuf, size_t cbBuf)

{

AssertReturn(g_cbCompr + cbBuf <= g_cbComprAlloc, VERR_BUFFER_OVERFLOW);

memcpy(&g_pabCompr[g_cbCompr], pvBuf, cbBuf);

g_cbCompr += cbBuf;

return VINF_SUCCESS;

}

static DECLCALLBACK(int) DecomprInCallback(void *pvUser, void *pvBuf, size_t cbBuf, size_t *pcbBuf)

{

size_t cb = RT_MIN(cbBuf, g_cbCompr - g_offComprIn);

if (pcbBuf)

*pcbBuf = cb;

memcpy(pvBuf, &g_pabCompr[g_offComprIn], cb);

g_offComprIn += cb;

return VINF_SUCCESS;

}

static void tstBenchmarkCRCsAllInOne(uint8_t const *pabSrc, size_t cbSrc)

{

RTPrintf("Algorithm Speed Time Digest\n"

"------------------------------------------------------------------------------\n");

uint64_t NanoTS = RTTimeNanoTS();

uint32_t u32Crc = RTCrc32(pabSrc, cbSrc);

NanoTS = RTTimeNanoTS() - NanoTS;

unsigned uSpeed = (unsigned)(cbSrc / (long double)NanoTS * 1000000000.0 / 1024);

RTPrintf("CRC-32 %'9u KB/s %'15llu ns - %08x\n", uSpeed, NanoTS, u32Crc);

NanoTS = RTTimeNanoTS();

uint64_t u64Crc = RTCrc64(pabSrc, cbSrc);

NanoTS = RTTimeNanoTS() - NanoTS;

uSpeed = (unsigned)(cbSrc / (long double)NanoTS * 1000000000.0 / 1024);

RTPrintf("CRC-64 %'9u KB/s %'15llu ns - %016llx\n", uSpeed, NanoTS, u64Crc);

NanoTS = RTTimeNanoTS();

u32Crc = RTCrcAdler32(pabSrc, cbSrc);

NanoTS = RTTimeNanoTS() - NanoTS;

uSpeed = (unsigned)(cbSrc / (long double)NanoTS * 1000000000.0 / 1024);

RTPrintf("Adler-32 %'9u KB/s %'15llu ns - %08x\n", uSpeed, NanoTS, u32Crc);

NanoTS = RTTimeNanoTS();

uint8_t abMd5Hash[RTMD5HASHSIZE];

RTMd5(pabSrc, cbSrc, abMd5Hash);

NanoTS = RTTimeNanoTS() - NanoTS;

uSpeed = (unsigned)(cbSrc / (long double)NanoTS * 1000000000.0 / 1024);

char szDigest[257];

RTMd5ToString(abMd5Hash, szDigest, sizeof(szDigest));

RTPrintf("MD5 %'9u KB/s %'15llu ns - %s\n", uSpeed, NanoTS, szDigest);

NanoTS = RTTimeNanoTS();

uint8_t abSha1Hash[RTSHA1_HASH_SIZE];

RTSha1(pabSrc, cbSrc, abSha1Hash);

NanoTS = RTTimeNanoTS() - NanoTS;

uSpeed = (unsigned)(cbSrc / (long double)NanoTS * 1000000000.0 / 1024);

RTSha1ToString(abSha1Hash, szDigest, sizeof(szDigest));

RTPrintf("SHA-1 %'9u KB/s %'15llu ns - %s\n", uSpeed, NanoTS, szDigest);

NanoTS = RTTimeNanoTS();

uint8_t abSha256Hash[RTSHA256_HASH_SIZE];

RTSha256(pabSrc, cbSrc, abSha256Hash);

NanoTS = RTTimeNanoTS() - NanoTS;

uSpeed = (unsigned)(cbSrc / (long double)NanoTS * 1000000000.0 / 1024);

RTSha256ToString(abSha256Hash, szDigest, sizeof(szDigest));

RTPrintf("SHA-256 %'9u KB/s %'15llu ns - %s\n", uSpeed, NanoTS, szDigest);

NanoTS = RTTimeNanoTS();

uint8_t abSha512Hash[RTSHA512_HASH_SIZE];

RTSha512(pabSrc, cbSrc, abSha512Hash);

NanoTS = RTTimeNanoTS() - NanoTS;

uSpeed = (unsigned)(cbSrc / (long double)NanoTS * 1000000000.0 / 1024);

RTSha512ToString(abSha512Hash, szDigest, sizeof(szDigest));

RTPrintf("SHA-512 %'9u KB/s %'15llu ns - %s\n", uSpeed, NanoTS, szDigest);

}

static void tstBenchmarkCRCsPageByPage(uint8_t const *pabSrc, size_t cbSrc)

{

RTPrintf("Algorithm Speed Time \n"

"----------------------------------------------\n");

size_t const cPages = cbSrc / PAGE_SIZE;

uint64_t NanoTS = RTTimeNanoTS();

for (uint32_t iPage = 0; iPage < cPages; iPage++)

RTCrc32(&pabSrc[iPage * PAGE_SIZE], PAGE_SIZE);

NanoTS = RTTimeNanoTS() - NanoTS;

unsigned uSpeed = (unsigned)(cbSrc / (long double)NanoTS * 1000000000.0 / 1024);

RTPrintf("CRC-32 %'9u KB/s %'15llu ns\n", uSpeed, NanoTS);

NanoTS = RTTimeNanoTS();

for (uint32_t iPage = 0; iPage < cPages; iPage++)

RTCrc64(&pabSrc[iPage * PAGE_SIZE], PAGE_SIZE);

NanoTS = RTTimeNanoTS() - NanoTS;

uSpeed = (unsigned)(cbSrc / (long double)NanoTS * 1000000000.0 / 1024);

RTPrintf("CRC-64 %'9u KB/s %'15llu ns\n", uSpeed, NanoTS);

NanoTS = RTTimeNanoTS();

for (uint32_t iPage = 0; iPage < cPages; iPage++)

RTCrcAdler32(&pabSrc[iPage * PAGE_SIZE], PAGE_SIZE);

NanoTS = RTTimeNanoTS() - NanoTS;

uSpeed = (unsigned)(cbSrc / (long double)NanoTS * 1000000000.0 / 1024);

RTPrintf("Adler-32 %'9u KB/s %'15llu ns\n", uSpeed, NanoTS);

NanoTS = RTTimeNanoTS();

uint8_t abMd5Hash[RTMD5HASHSIZE];

for (uint32_t iPage = 0; iPage < cPages; iPage++)

RTMd5(&pabSrc[iPage * PAGE_SIZE], PAGE_SIZE, abMd5Hash);

NanoTS = RTTimeNanoTS() - NanoTS;

uSpeed = (unsigned)(cbSrc / (long double)NanoTS * 1000000000.0 / 1024);

RTPrintf("MD5 %'9u KB/s %'15llu ns\n", uSpeed, NanoTS);

NanoTS = RTTimeNanoTS();

uint8_t abSha1Hash[RTSHA1_HASH_SIZE];

for (uint32_t iPage = 0; iPage < cPages; iPage++)

RTSha1(&pabSrc[iPage * PAGE_SIZE], PAGE_SIZE, abSha1Hash);

NanoTS = RTTimeNanoTS() - NanoTS;

uSpeed = (unsigned)(cbSrc / (long double)NanoTS * 1000000000.0 / 1024);

RTPrintf("SHA-1 %'9u KB/s %'15llu ns\n", uSpeed, NanoTS);

NanoTS = RTTimeNanoTS();

uint8_t abSha256Hash[RTSHA256_HASH_SIZE];

for (uint32_t iPage = 0; iPage < cPages; iPage++)

RTSha256(&pabSrc[iPage * PAGE_SIZE], PAGE_SIZE, abSha256Hash);

NanoTS = RTTimeNanoTS() - NanoTS;

uSpeed = (unsigned)(cbSrc / (long double)NanoTS * 1000000000.0 / 1024);

RTPrintf("SHA-256 %'9u KB/s %'15llu ns\n", uSpeed, NanoTS);

NanoTS = RTTimeNanoTS();

uint8_t abSha512Hash[RTSHA512_HASH_SIZE];

for (uint32_t iPage = 0; iPage < cPages; iPage++)

RTSha512(&pabSrc[iPage * PAGE_SIZE], PAGE_SIZE, abSha512Hash);

NanoTS = RTTimeNanoTS() - NanoTS;

uSpeed = (unsigned)(cbSrc / (long double)NanoTS * 1000000000.0 / 1024);

RTPrintf("SHA-512 %'9u KB/s %'15llu ns\n", uSpeed, NanoTS);

}

static int Error(const char *pszMsgFmt, ...)

{

RTStrmPrintf(g_pStdErr, "\nerror: ");

va_list va;

va_start(va, pszMsgFmt);

RTStrmPrintfV(g_pStdErr, pszMsgFmt, va);

va_end(va);

return 1;

}

int main(int argc, char **argv)

{

RTR3Init();

/*

static const RTGETOPTDEF s_aOptions[] =

{

{ "--interations", 'i', RTGETOPT_REQ_UINT32 },

{ "--num-pages", 'n', RTGETOPT_REQ_UINT32 },

{ "--page-at-a-time", 'c', RTGETOPT_REQ_UINT32 },

{ "--page-file", 'f', RTGETOPT_REQ_STRING },

{ "--offset", 'o', RTGETOPT_REQ_UINT64 },

{ "--help", 'h', RTGETOPT_REQ_NOTHING },

};

const char *pszPageFile = NULL;

uint64_t offPageFile = 0;

uint32_t cIterations = 1;

uint32_t cPagesAtATime = 1;

RTGETOPTUNION Val;

RTGETOPTSTATE State;

int rc = RTGetOptInit(&State, argc, argv, &s_aOptions[0], RT_ELEMENTS(s_aOptions), 1, 0);

AssertRCReturn(rc, 1);

while ((rc = RTGetOpt(&State, &Val)))

{

switch (rc)

{

case 'n':

g_cPages = Val.u32;

if (g_cPages * PAGE_SIZE * 4 / (PAGE_SIZE * 4) != g_cPages)

return Error("The specified page count is too high: %#x (%#llx bytes)\n", g_cPages, (uint64_t)g_cPages * PAGE_SHIFT);

if (g_cPages < 1)

return Error("The specified page count is too low: %#x\n", g_cPages);

break;

case 'i':

cIterations = Val.u32;

if (cIterations < 1)

return Error("The number of iterations must be 1 or higher\n");

break;

case 'c':

cPagesAtATime = Val.u32;

if (cPagesAtATime < 1 || cPagesAtATime > 10240)

return Error("The specified pages-at-a-time count is out of range: %#x\n", cPagesAtATime);

break;

case 'f':

pszPageFile = Val.psz;

break;

case 'o':

offPageFile = Val.u64;

break;

case 'O':

offPageFile = Val.u64 * PAGE_SIZE;

break;

case 'h':

RTPrintf("syntax: tstCompressionBenchmark [options]\n"

"\n"

"Options:\n"

" -h, --help\n"

" Show this help page\n"

" -i, --interations <num>\n"

" The number of iterations.\n"

" -n, --num-pages <pages>\n"

" The number of pages.\n"

" -c, --pages-at-a-time <pages>\n"

" Number of pages at a time.\n"

" -f, --page-file <filename>\n"

" File or device to read the page from. The default\n"

" is to generate some garbage.\n"

" -o, --offset <file-offset>\n"

" Offset into the page file to start reading at.\n");

return 0;

default:

if (rc == VINF_GETOPT_NOT_OPTION)

Error("unknown argument: %s\n", Val.psz);

else if (rc > 0)

{

if (RT_C_IS_GRAPH(rc))

Error("unhandled option: -%c\n", rc);

else

Error("unhandled option: %d\n", rc);

}

else if (rc == VERR_GETOPT_UNKNOWN_OPTION)

Error("unknown option: %s\n", Val.psz);

else if (Val.pDef)

Error("%s: %Rrs\n", Val.pDef->pszLong, rc);

else

Error("%Rrs\n", rc);

return 1;

}

}

g_cbPages = g_cPages * PAGE_SIZE;

uint64_t cbTotal = (uint64_t)g_cPages * PAGE_SIZE * cIterations;

uint64_t cbTotalKB = cbTotal / _1K;

if (cbTotal / cIterations != g_cbPages)

return Error("cPages * cIterations -> overflow\n");

/*

if (pszPageFile)

{

size_t cbFile;

rc = RTFileReadAllEx(pszPageFile, offPageFile, g_cbPages, RTFILE_RDALL_O_DENY_NONE, (void **)&g_pabSrc, &cbFile);

if (RT_FAILURE(rc))

return Error("Error reading %zu bytes from %s at %llu: %Rrc\n", g_cbPages, pszPageFile, offPageFile, rc);

if (cbFile != g_cbPages)

return Error("Error reading %zu bytes from %s at %llu: got %zu bytes\n", g_cbPages, pszPageFile, offPageFile, cbFile);

}

else

{

g_pabSrc = (uint8_t *)RTMemAlloc(g_cbPages);

if (g_pabSrc)

{

/* Just fill it with something - warn about the low quality of the something. */

RTPrintf("tstCompressionBenchmark: WARNING! No input file was specified so the source\n"

"buffer will be filled with generated data of questionable quality.\n");

#ifdef RT_OS_LINUX

RTPrintf("To get real RAM on linux: sudo dd if=/dev/mem ... \n");

#endif

uint8_t *pb = g_pabSrc;

uint8_t *pbEnd = &g_pabSrc[g_cbPages];

for (; pb != pbEnd; pb += 16)

{

char szTmp[17];

RTStrPrintf(szTmp, sizeof(szTmp), "aaaa%08Xzzzz", (uint32_t)(uintptr_t)pb);

memcpy(pb, szTmp, 16);

}

}

}

g_pabDecompr = (uint8_t *)RTMemAlloc(g_cbPages);

g_cbComprAlloc = RT_MAX(g_cbPages * 2, 256 * PAGE_SIZE);

g_pabCompr = (uint8_t *)RTMemAlloc(g_cbComprAlloc);

if (!g_pabSrc || !g_pabDecompr || !g_pabCompr)

return Error("failed to allocate memory buffers (g_cPages=%#x)\n", g_cPages);

/*

struct

{

/** The time spent decompressing. */

uint64_t cNanoDecompr;

/** The time spent compressing. */

uint64_t cNanoCompr;

/** The size of the compressed data. */

uint64_t cbCompr;

/** First error. */

int rc;

/** The compression style: block or stream. */

bool fBlock;

/** Compresstion type. */

RTZIPTYPE enmType;

/** Compresison level. */

RTZIPLEVEL enmLevel;

/** Method name. */

const char *pszName;

} aTests[] =

{

{ 0, 0, 0, VINF_SUCCESS, false, RTZIPTYPE_STORE, RTZIPLEVEL_DEFAULT, "RTZip/Store" },

{ 0, 0, 0, VINF_SUCCESS, false, RTZIPTYPE_LZF, RTZIPLEVEL_DEFAULT, "RTZip/LZF" },

{ 0, 0, 0, VINF_SUCCESS, true, RTZIPTYPE_STORE, RTZIPLEVEL_DEFAULT, "RTZipBlock/Store" },

{ 0, 0, 0, VINF_SUCCESS, true, RTZIPTYPE_LZF, RTZIPLEVEL_DEFAULT, "RTZipBlock/LZF" },

{ 0, 0, 0, VINF_SUCCESS, true, RTZIPTYPE_LZJB, RTZIPLEVEL_DEFAULT, "RTZipBlock/LZJB" },

{ 0, 0, 0, VINF_SUCCESS, true, RTZIPTYPE_LZO, RTZIPLEVEL_DEFAULT, "RTZipBlock/LZO" },

};

RTPrintf("tstCompressionBenchmark: TESTING..");

for (uint32_t i = 0; i < cIterations; i++)

{

for (uint32_t j = 0; j < RT_ELEMENTS(aTests); j++)

{

if (RT_FAILURE(aTests[j].rc))

continue;

memset(g_pabCompr, 0xaa, g_cbComprAlloc);

memset(g_pabDecompr, 0xcc, g_cbPages);

g_cbCompr = 0;

g_offComprIn = 0;

RTPrintf("."); RTStrmFlush(g_pStdOut);

/*

uint64_t NanoTS = RTTimeNanoTS();

if (aTests[j].fBlock)

{

size_t cbLeft = g_cbComprAlloc;

uint8_t const *pbSrcPage = g_pabSrc;

uint8_t *pbDstPage = g_pabCompr;

for (size_t iPage = 0; iPage < g_cPages; iPage += cPagesAtATime)

{

AssertBreakStmt(cbLeft > PAGE_SIZE * 4, aTests[j].rc = rc = VERR_BUFFER_OVERFLOW);

uint32_t *pcb = (uint32_t *)pbDstPage;

pbDstPage += sizeof(uint32_t);

cbLeft -= sizeof(uint32_t);

size_t cbSrc = RT_MIN(g_cPages - iPage, cPagesAtATime) * PAGE_SIZE;

size_t cbDst;

rc = RTZipBlockCompress(aTests[j].enmType, aTests[j].enmLevel, 0 /*fFlags*/,

pbSrcPage, cbSrc,

pbDstPage, cbLeft, &cbDst);

if (RT_FAILURE(rc))

{

Error("RTZipBlockCompress failed for '%s' (#%u): %Rrc\n", aTests[j].pszName, j, rc);

aTests[j].rc = rc;

break;

}

*pcb = (uint32_t)cbDst;

cbLeft -= cbDst;

pbDstPage += cbDst;

pbSrcPage += cbSrc;

}

if (RT_FAILURE(rc))

continue;

g_cbCompr = pbDstPage - g_pabCompr;

}

else

{

PRTZIPCOMP pZipComp;

rc = RTZipCompCreate(&pZipComp, NULL, ComprOutCallback, aTests[j].enmType, aTests[j].enmLevel);

if (RT_FAILURE(rc))

{

Error("Failed to create the compressor for '%s' (#%u): %Rrc\n", aTests[j].pszName, j, rc);

aTests[j].rc = rc;

continue;

}

uint8_t const *pbSrcPage = g_pabSrc;

for (size_t iPage = 0; iPage < g_cPages; iPage += cPagesAtATime)

{

size_t cb = RT_MIN(g_cPages - iPage, cPagesAtATime) * PAGE_SIZE;

rc = RTZipCompress(pZipComp, pbSrcPage, cb);

if (RT_FAILURE(rc))

{

Error("RTZipCompress failed for '%s' (#%u): %Rrc\n", aTests[j].pszName, j, rc);

aTests[j].rc = rc;

break;

}

pbSrcPage += cb;

}

if (RT_FAILURE(rc))

continue;

rc = RTZipCompFinish(pZipComp);

if (RT_FAILURE(rc))

{

Error("RTZipCompFinish failed for '%s' (#%u): %Rrc\n", aTests[j].pszName, j, rc);

aTests[j].rc = rc;

break;

}

RTZipCompDestroy(pZipComp);

}

NanoTS = RTTimeNanoTS() - NanoTS;

aTests[j].cbCompr += g_cbCompr;

aTests[j].cNanoCompr += NanoTS;

/*

NanoTS = RTTimeNanoTS();

if (aTests[j].fBlock)

{

uint8_t const *pbSrcPage = g_pabCompr;

size_t cbLeft = g_cbCompr;

uint8_t *pbDstPage = g_pabDecompr;

for (size_t iPage = 0; iPage < g_cPages; iPage += cPagesAtATime)

{

size_t cbDst = RT_MIN(g_cPages - iPage, cPagesAtATime) * PAGE_SIZE;

size_t cbSrc = *(uint32_t *)pbSrcPage;

pbSrcPage += sizeof(uint32_t);

cbLeft -= sizeof(uint32_t);

rc = RTZipBlockDecompress(aTests[j].enmType, 0 /*fFlags*/,

pbSrcPage, cbSrc, &cbSrc,

pbDstPage, cbDst, &cbDst);

if (RT_FAILURE(rc))

{

Error("RTZipBlockDecompress failed for '%s' (#%u): %Rrc\n", aTests[j].pszName, j, rc);

aTests[j].rc = rc;

break;

}

pbDstPage += cbDst;

cbLeft -= cbSrc;

pbSrcPage += cbSrc;

}

if (RT_FAILURE(rc))

continue;

}

else

{

PRTZIPDECOMP pZipDecomp;

rc = RTZipDecompCreate(&pZipDecomp, NULL, DecomprInCallback);

if (RT_FAILURE(rc))

{

Error("Failed to create the decompressor for '%s' (#%u): %Rrc\n", aTests[j].pszName, j, rc);

aTests[j].rc = rc;

continue;

}

uint8_t *pbDstPage = g_pabDecompr;

for (size_t iPage = 0; iPage < g_cPages; iPage += cPagesAtATime)

{

size_t cb = RT_MIN(g_cPages - iPage, cPagesAtATime) * PAGE_SIZE;

rc = RTZipDecompress(pZipDecomp, pbDstPage, cb, NULL);

if (RT_FAILURE(rc))

{

Error("RTZipDecompress failed for '%s' (#%u): %Rrc\n", aTests[j].pszName, j, rc);

aTests[j].rc = rc;

break;

}

pbDstPage += cb;

}

RTZipDecompDestroy(pZipDecomp);

if (RT_FAILURE(rc))

continue;

}

NanoTS = RTTimeNanoTS() - NanoTS;

aTests[j].cNanoDecompr += NanoTS;

if (memcmp(g_pabDecompr, g_pabSrc, g_cbPages))

{

Error("The compressed data doesn't match the source for '%s' (%#u)\n", aTests[j].pszName, j);

aTests[j].rc = VERR_BAD_EXE_FORMAT;

continue;

}

}

}

if (RT_SUCCESS(rc))

RTPrintf("\n");

/*

rc = 0;

RTPrintf("tstCompressionBenchmark: BEGIN RESULTS\n");

RTPrintf("%-20s Compression Decompression\n", "");

RTPrintf("%-20s In Out Ratio Size In Out\n", "Method");

RTPrintf("%.20s-----------------------------------------------------------------------------------------\n", "---------------------------------------------");

for (uint32_t j = 0; j < RT_ELEMENTS(aTests); j++)

{

if (RT_SUCCESS(aTests[j].rc))

{

unsigned uComprSpeedIn = (unsigned)(cbTotalKB / (long double)aTests[j].cNanoCompr * 1000000000.0);

unsigned uComprSpeedOut = (unsigned)(aTests[j].cbCompr / (long double)aTests[j].cNanoCompr * 1000000000.0 / 1024);

unsigned uRatio = (unsigned)(aTests[j].cbCompr / cIterations * 100 / g_cbPages);

unsigned uDecomprSpeedIn = (unsigned)(aTests[j].cbCompr / (long double)aTests[j].cNanoDecompr * 1000000000.0 / 1024);

unsigned uDecomprSpeedOut = (unsigned)(cbTotalKB / (long double)aTests[j].cNanoDecompr * 1000000000.0);

RTPrintf("%-20s %'9u KB/s %'9u KB/s %3u%% %'11llu bytes %'9u KB/s %'9u KB/s",

aTests[j].pszName,

uComprSpeedIn, uComprSpeedOut, uRatio, aTests[j].cbCompr / cIterations,

uDecomprSpeedIn, uDecomprSpeedOut);

#if 0

RTPrintf(" [%'14llu / %'14llu ns]\n",

aTests[j].cNanoCompr / cIterations,

aTests[j].cNanoDecompr / cIterations);

#else

RTPrintf("\n");

#endif

}

else

{

RTPrintf("%-20s: %Rrc\n", aTests[j].pszName, aTests[j].rc);

rc = 1;

}

}

if (pszPageFile)

RTPrintf("Input: %'10zu pages from '%s' starting at offset %'lld (%#llx)\n"

" %'11zu bytes\n",

g_cPages, pszPageFile, offPageFile, offPageFile, g_cbPages);

else

RTPrintf("Input: %'10zu pages of generated rubbish %'11zu bytes\n",

g_cPages, g_cbPages);

/*

size_t cZeroPages = 0;

for (size_t iPage = 0; iPage < g_cPages; iPage++)

{

if (!ASMMemIsAllU32(&g_pabSrc[iPage * PAGE_SIZE], PAGE_SIZE, 0))

cZeroPages++;

}

RTPrintf(" %'10zu zero pages (%u %%)\n", cZeroPages, cZeroPages * 100 / g_cPages);

/*

RTPrintf("\n"

"tstCompressionBenchmark: Checksum/CRC - All In One\n");

tstBenchmarkCRCsAllInOne(g_pabSrc, g_cbPages);

RTPrintf("\n"

"tstCompressionBenchmark: Checksum/CRC - Page by Page\n");

tstBenchmarkCRCsPageByPage(g_pabSrc, g_cbPages);

RTPrintf("tstCompressionBenchmark: END RESULTS\n");

return rc;

}