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Overview
Comment: | Add the speedtest8inst1.c program for running speed tests with an instrumented VFS. (CVS 4993) |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
baa8056c67c03ac78a1ed6da5a46fda7 |
User & Date: | drh 2008-04-11 21:20:49.000 |
Context
2008-04-12
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10:53 | Add a logfile option to test_osinst.c. (CVS 4994) (check-in: f97d894582 user: danielk1977 tags: trunk) | |
2008-04-11
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21:20 | Add the speedtest8inst1.c program for running speed tests with an instrumented VFS. (CVS 4993) (check-in: baa8056c67 user: drh tags: trunk) | |
19:37 | Faster implementation of hexToInt that uses not branches. Ticket #3047. (CVS 4992) (check-in: a70e958756 user: drh tags: trunk) | |
Changes
Added tool/speedtest8inst1.c.
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A new database ** is created at the beginning of the program. All statements are ** timed using the high-resolution timer built into Intel-class processors. ** ** To compile this program, first compile the SQLite library separately ** will full optimizations. For example: ** ** gcc -c -O6 -DSQLITE_THREADSAFE=0 sqlite3.c ** ** Then link against this program. But to do optimize this program ** because that defeats the hi-res timer. ** ** gcc speedtest8.c sqlite3.o -ldl ** ** Then run this program with a single argument which is the name of ** a file containing SQL script that you want to test: ** ** ./a.out test.db test.sql */ #include <stdio.h> #include <string.h> #include <stdlib.h> #include <ctype.h> #include <unistd.h> #include <stdarg.h> #include "sqlite3.h" /* ** The following routine only works on pentium-class processors. ** It uses the RDTSC opcode to read the cycle count value out of the ** processor and returns that value. This can be used for high-res ** profiling. */ __inline__ sqlite3_uint64 hwtime(void){ unsigned int lo, hi; /* We cannot use "=A", since this would use %rax on x86_64 */ __asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi)); return (sqlite3_uint64)hi << 32 | lo; } /* ** Send a message to the log file. */ static void logMessage(const char *zFormat, ...){ va_list ap; va_start(ap, zFormat); vprintf(zFormat, ap); va_end(ap); } /* ** Timers */ static sqlite3_uint64 prepTime = 0; static sqlite3_uint64 runTime = 0; static sqlite3_uint64 finalizeTime = 0; static sqlite3_uint64 instTime = 0; typedef struct inst_file inst_file; struct inst_file { sqlite3_file base; sqlite3_file *pReal; }; /* ** Method declarations for inst_file. */ static int instClose(sqlite3_file*); static int instRead(sqlite3_file*, void*, int iAmt, sqlite3_int64 iOfst); static int instWrite(sqlite3_file*,const void*,int iAmt, sqlite3_int64 iOfst); static int instTruncate(sqlite3_file*, sqlite3_int64 size); static int instSync(sqlite3_file*, int flags); static int instFileSize(sqlite3_file*, sqlite3_int64 *pSize); static int instLock(sqlite3_file*, int); static int instUnlock(sqlite3_file*, int); static int instCheckReservedLock(sqlite3_file*); static int instFileControl(sqlite3_file*, int op, void *pArg); static int instSectorSize(sqlite3_file*); static int instDeviceCharacteristics(sqlite3_file*); /* ** Method declarations for inst_vfs. */ static int instOpen(sqlite3_vfs*, const char *, sqlite3_file*, int , int *); static int instDelete(sqlite3_vfs*, const char *zName, int syncDir); static int instAccess(sqlite3_vfs*, const char *zName, int flags); static int instGetTempName(sqlite3_vfs*, int nOut, char *zOut); static int instFullPathname(sqlite3_vfs*, const char *zName, int, char *zOut); static void *instDlOpen(sqlite3_vfs*, const char *zFilename); static void instDlError(sqlite3_vfs*, int nByte, char *zErrMsg); static void *instDlSym(sqlite3_vfs*,void*, const char *zSymbol); static void instDlClose(sqlite3_vfs*, void*); static int instRandomness(sqlite3_vfs*, int nByte, char *zOut); static int instSleep(sqlite3_vfs*, int microseconds); static int instCurrentTime(sqlite3_vfs*, double*); static sqlite3_vfs inst_vfs = { 1, /* iVersion */ 0, /* szOsFile */ 0, /* mxPathname */ 0, /* pNext */ "instVfs", /* zName */ 0, /* pAppData */ instOpen, /* xOpen */ instDelete, /* xDelete */ instAccess, /* xAccess */ instGetTempName, /* xGetTempName */ instFullPathname, /* xFullPathname */ instDlOpen, /* xDlOpen */ instDlError, /* xDlError */ instDlSym, /* xDlSym */ instDlClose, /* xDlClose */ instRandomness, /* xRandomness */ instSleep, /* xSleep */ instCurrentTime /* xCurrentTime */ }; static sqlite3_io_methods inst_io_methods = { 1, /* iVersion */ instClose, /* xClose */ instRead, /* xRead */ instWrite, /* xWrite */ instTruncate, /* xTruncate */ instSync, /* xSync */ instFileSize, /* xFileSize */ instLock, /* xLock */ instUnlock, /* xUnlock */ instCheckReservedLock, /* xCheckReservedLock */ instFileControl, /* xFileControl */ instSectorSize, /* xSectorSize */ instDeviceCharacteristics /* xDeviceCharacteristics */ }; #define OS_TIME_IO(MESSAGE, A, B, CALL) \ int rc; sqlite3_uint64 t1, t2; \ inst_file *p = (inst_file*)pFile; \ t1 = hwtime(); \ rc = CALL; \ t2 = hwtime(); \ logMessage(MESSAGE, A, B, t2-t1); \ instTime += hwtime() - t2; \ return rc; #define OS_TIME_VFS(MESSAGE, A, B, CALL) \ int rc; \ sqlite3_uint64 t1, t2; \ sqlite3_vfs *pRealVfs = (sqlite3_vfs*)pVfs->pAppData; \ t1 = hwtime(); \ rc = CALL; \ t2 = hwtime(); \ logMessage(MESSAGE, A, B, t2-t1); \ instTime += hwtime() - t2; \ return rc; /* ** Close an inst-file. */ static int instClose(sqlite3_file *pFile){ OS_TIME_IO("xClose: %s%s%lld cycles\n", "", "", p->pReal->pMethods->xClose(p->pReal) ); } /* ** Read data from an inst-file. */ static int instRead( sqlite3_file *pFile, void *zBuf, int iAmt, sqlite_int64 iOfst ){ OS_TIME_IO("xRead: %d bytes at offset %lld - %lld cycles\n", iAmt, iOfst, p->pReal->pMethods->xRead(p->pReal, zBuf, iAmt,iOfst) ); } /* ** Write data to an inst-file. */ static int instWrite( sqlite3_file *pFile, const void *z, int iAmt, sqlite_int64 iOfst ){ OS_TIME_IO("xWrite: %d bytes at offset %lld - %lld cycles\n", iAmt, iOfst, p->pReal->pMethods->xWrite(p->pReal, z, iAmt, iOfst) ); } /* ** Truncate an inst-file. */ static int instTruncate(sqlite3_file *pFile, sqlite_int64 size){ OS_TIME_IO("xTruncate: to %lld bytes - %s%lld cycles\n", size, "", p->pReal->pMethods->xTruncate(p->pReal, size) ); } /* ** Sync an inst-file. */ static int instSync(sqlite3_file *pFile, int flags){ OS_TIME_IO("xSync: %s%s%lld cycles\n", "", "", p->pReal->pMethods->xSync(p->pReal, flags) ); } /* ** Return the current file-size of an inst-file. */ static int instFileSize(sqlite3_file *pFile, sqlite_int64 *pSize){ OS_TIME_IO("xFileSize: %s%s%lld cycles\n", "", "", p->pReal->pMethods->xFileSize(p->pReal, pSize) ); } /* ** Lock an inst-file. */ static int instLock(sqlite3_file *pFile, int eLock){ OS_TIME_IO("xLock: %d %s%lld cycles\n", eLock, "", p->pReal->pMethods->xLock(p->pReal, eLock) ); } /* ** Unlock an inst-file. */ static int instUnlock(sqlite3_file *pFile, int eLock){ OS_TIME_IO("xUnlock: %d %s%lld\n", eLock, "", p->pReal->pMethods->xUnlock(p->pReal, eLock) ); } /* ** Check if another file-handle holds a RESERVED lock on an inst-file. */ static int instCheckReservedLock(sqlite3_file *pFile){ OS_TIME_IO("xCheckReservedLock: %s%s%lld cycles\n", "", "", p->pReal->pMethods->xCheckReservedLock(p->pReal) ); } /* ** File control method. For custom operations on an inst-file. */ static int instFileControl(sqlite3_file *pFile, int op, void *pArg){ OS_TIME_IO("xFileControl: op=%d - %s%lld cycles\n", op, "", p->pReal->pMethods->xFileControl(p->pReal, op, pArg) ); } /* ** Return the sector-size in bytes for an inst-file. */ static int instSectorSize(sqlite3_file *pFile){ OS_TIME_IO("xSectorSize: %s%s%lld cycles\n", "", "", p->pReal->pMethods->xSectorSize(p->pReal) ); } /* ** Return the device characteristic flags supported by an inst-file. */ static int instDeviceCharacteristics(sqlite3_file *pFile){ OS_TIME_IO("xDeviceCharacteristics: %s%s%lld cycles\n", "", "", p->pReal->pMethods->xDeviceCharacteristics(p->pReal) ); } /* ** Open an inst file handle. */ static int instOpen( sqlite3_vfs *pVfs, const char *zName, sqlite3_file *pFile, int flags, int *pOutFlags ){ inst_file *p = (inst_file *)pFile; pFile->pMethods = &inst_io_methods; p->pReal = (sqlite3_file *)&p[1]; OS_TIME_VFS("xOpen: \"%s\" flags=0x04%x - %lld cycles\n", zName, flags, pRealVfs->xOpen(pRealVfs, zName, p->pReal, flags, pOutFlags) ); } /* ** Delete the file located at zPath. If the dirSync argument is true, ** ensure the file-system modifications are synced to disk before ** returning. */ static int instDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){ OS_TIME_VFS("xDelete: \"%s\", dirSync=%d - %lld cycles\n", zPath, dirSync, pRealVfs->xDelete(pRealVfs, zPath, dirSync) ); } /* ** Test for access permissions. Return true if the requested permission ** is available, or false otherwise. */ static int instAccess(sqlite3_vfs *pVfs, const char *zPath, int flags){ OS_TIME_VFS("xAccess of \"%s\", flags=0x%04x - %lld cycles\n", zPath, flags, pRealVfs->xAccess(pRealVfs, zPath, flags) ); } /* ** Populate buffer zBufOut with a pathname suitable for use as a ** temporary file. zBufOut is guaranteed to point to a buffer of ** at least (INST_MAX_PATHNAME+1) bytes. */ static int instGetTempName(sqlite3_vfs *pVfs, int nOut, char *zBufOut){ OS_TIME_VFS("xGetTempName: %s%s%lld cycles\n", "", "", pRealVfs->xGetTempname(pRealVfs, nOut, zBufOut) ); } /* ** Populate buffer zOut with the full canonical pathname corresponding ** to the pathname in zPath. zOut is guaranteed to point to a buffer ** of at least (INST_MAX_PATHNAME+1) bytes. */ static int instFullPathname( sqlite3_vfs *pVfs, const char *zPath, int nOut, char *zOut ){ OS_TIME_VFS("xFullPathname: \"%s\" - %s%lld cycles\n", zPath, "", pRealVfs->xFullPathname(pRealVfs, zPath, nOut, zOut) ); } /* ** Open the dynamic library located at zPath and return a handle. */ static void *instDlOpen(sqlite3_vfs *pVfs, const char *zPath){ sqlite3_vfs *pRealVfs = (sqlite3_vfs*)pVfs->pAppData; return pRealVfs->xDlOpen(pRealVfs, zPath); } /* ** Populate the buffer zErrMsg (size nByte bytes) with a human readable ** utf-8 string describing the most recent error encountered associated ** with dynamic libraries. */ static void instDlError(sqlite3_vfs *pVfs, int nByte, char *zErrMsg){ sqlite3_vfs *pRealVfs = (sqlite3_vfs*)pVfs->pAppData; pRealVfs->xDlError(pRealVfs, nByte, zErrMsg); } /* ** Return a pointer to the symbol zSymbol in the dynamic library pHandle. */ static void *instDlSym(sqlite3_vfs *pVfs, void *pHandle, const char *zSymbol){ sqlite3_vfs *pRealVfs = (sqlite3_vfs*)pVfs->pAppData; return pRealVfs->xDlSym(pRealVfs, pHandle, zSymbol); } /* ** Close the dynamic library handle pHandle. */ static void instDlClose(sqlite3_vfs *pVfs, void *pHandle){ sqlite3_vfs *pRealVfs = (sqlite3_vfs*)pVfs->pAppData; pRealVfs->xDlClose(pRealVfs, pHandle); } /* ** Populate the buffer pointed to by zBufOut with nByte bytes of ** random data. */ static int instRandomness(sqlite3_vfs *pVfs, int nByte, char *zBufOut){ OS_TIME_VFS("xRandomness: nByte=%d - %s%lld cycles\n", nByte, "", pRealVfs->xRandomness(pRealVfs, nByte, zBufOut) ); } /* ** Sleep for nMicro microseconds. Return the number of microseconds ** actually slept. */ static int instSleep(sqlite3_vfs *pVfs, int nMicro){ OS_TIME_VFS("xSleep: usec=%d - %s%lld cycles\n", nMicro, "", pRealVfs->xSleep(pRealVfs, nMicro) ); } /* ** Return the current time as a Julian Day number in *pTimeOut. */ static int instCurrentTime(sqlite3_vfs *pVfs, double *pTimeOut){ OS_TIME_VFS("xCurrentTime: %s%s%lld cycles\n", "", "", pRealVfs->xCurrentTime(pRealVfs, pTimeOut) ); } /* ** Insert the instructed VFS as the default VFS. */ static void setupInstrumentedVfs(void){ sqlite3_vfs *p; sqlite3_vfs *pParent; pParent = sqlite3_vfs_find(0); if( !pParent ){ return; } p = sqlite3_malloc(sizeof(inst_vfs)); if( p ){ *p = inst_vfs; p->szOsFile = pParent->szOsFile + sizeof(inst_file); p->mxPathname = pParent->mxPathname; p->pAppData = pParent; sqlite3_vfs_register(p, 1); } } /* ** Prepare and run a single statement of SQL. */ static void prepareAndRun(sqlite3 *db, const char *zSql){ sqlite3_stmt *pStmt; const char *stmtTail; sqlite3_uint64 iStart, iElapse; int rc; printf("****************************************************************\n"); printf("SQL statement: [%s]\n", zSql); instTime = 0; iStart = hwtime(); rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, &stmtTail); iElapse = hwtime(); iElapse -= iStart + instTime; prepTime += iElapse; printf("sqlite3_prepare_v2() returns %d in %llu cycles\n", rc, iElapse); if( rc==SQLITE_OK ){ int nRow = 0; instTime = 0; iStart = hwtime(); while( (rc=sqlite3_step(pStmt))==SQLITE_ROW ){ nRow++; } iElapse = hwtime(); iElapse -= iStart + instTime; runTime += iElapse; printf("sqlite3_step() returns %d after %d rows in %llu cycles\n", rc, nRow, iElapse); instTime = 0; iStart = hwtime(); rc = sqlite3_finalize(pStmt); iElapse = hwtime(); iElapse -= iStart + instTime; finalizeTime += iElapse; printf("sqlite3_finalize() returns %d in %llu cycles\n", rc, iElapse); } } int main(int argc, char **argv){ sqlite3 *db; int rc; int nSql; char *zSql; int i, j; FILE *in; sqlite3_uint64 iStart, iElapse; sqlite3_uint64 iSetup = 0; int nStmt = 0; int nByte = 0; if( argc!=3 ){ fprintf(stderr, "Usage: %s FILENAME SQL-SCRIPT\n" "Runs SQL-SCRIPT against a UTF8 database\n", argv[0]); exit(1); } in = fopen(argv[2], "r"); fseek(in, 0L, SEEK_END); nSql = ftell(in); zSql = malloc( nSql+1 ); fseek(in, 0L, SEEK_SET); nSql = fread(zSql, 1, nSql, in); zSql[nSql] = 0; printf("SQLite version: %d\n", sqlite3_libversion_number()); unlink(argv[1]); setupInstrumentedVfs(); instTime = 0; iStart = hwtime(); rc = sqlite3_open(argv[1], &db); iElapse = hwtime(); iElapse -= iStart + instTime; iSetup = iElapse; printf("sqlite3_open() returns %d in %llu cycles\n", rc, iElapse); for(i=j=0; j<nSql; j++){ if( zSql[j]==';' ){ int isComplete; char c = zSql[j+1]; zSql[j+1] = 0; isComplete = sqlite3_complete(&zSql[i]); zSql[j+1] = c; if( isComplete ){ zSql[j] = 0; while( i<j && isspace(zSql[i]) ){ i++; } if( i<j ){ nStmt++; nByte += j-i; prepareAndRun(db, &zSql[i]); } zSql[j] = ';'; i = j+1; } } } instTime = 0; iStart = hwtime(); sqlite3_close(db); iElapse = hwtime(); iElapse -= iStart + instTime; iSetup += iElapse; printf("sqlite3_close() returns in %llu cycles\n", iElapse); printf("\n"); printf("Statements run: %15d\n", nStmt); printf("Bytes of SQL text: %15d\n", nByte); printf("Total prepare time: %15llu cycles\n", prepTime); printf("Total run time: %15llu cycles\n", runTime); printf("Total finalize time: %15llu cycles\n", finalizeTime); printf("Open/Close time: %15llu cycles\n", iSetup); printf("Total Time: %15llu cycles\n", prepTime + runTime + finalizeTime + iSetup); return 0; } |