mirror of
https://github.com/tursodatabase/libsql.git
synced 2024-12-15 14:29:44 +00:00
172 lines
4.7 KiB
C
172 lines
4.7 KiB
C
/*
|
|
** Performance test for SQLite.
|
|
**
|
|
** This program reads ASCII text from a file named on the command-line.
|
|
** It converts each SQL statement into UTF16 and submits it to SQLite
|
|
** for evaluation. A new UTF16 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 speedtest16.c sqlite3.o -ldl -I../src
|
|
**
|
|
** 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 database.db test.sql
|
|
*/
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <ctype.h>
|
|
#include <unistd.h>
|
|
#include "sqlite3.h"
|
|
|
|
#define ISSPACE(X) isspace((unsigned char)(X))
|
|
|
|
/*
|
|
** hwtime.h contains inline assembler code for implementing
|
|
** high-performance timing routines.
|
|
*/
|
|
#include "hwtime.h"
|
|
|
|
/*
|
|
** Convert a zero-terminated ASCII string into a zero-terminated
|
|
** UTF-16le string. Memory to hold the returned string comes
|
|
** from malloc() and should be freed by the caller.
|
|
*/
|
|
static void *asciiToUtf16le(const char *z){
|
|
int n = strlen(z);
|
|
char *z16;
|
|
int i, j;
|
|
|
|
z16 = malloc( n*2 + 2 );
|
|
for(i=j=0; i<=n; i++){
|
|
z16[j++] = z[i];
|
|
z16[j++] = 0;
|
|
}
|
|
return (void*)z16;
|
|
}
|
|
|
|
/*
|
|
** Timers
|
|
*/
|
|
static sqlite_uint64 prepTime = 0;
|
|
static sqlite_uint64 runTime = 0;
|
|
static sqlite_uint64 finalizeTime = 0;
|
|
|
|
/*
|
|
** Prepare and run a single statement of SQL.
|
|
*/
|
|
static void prepareAndRun(sqlite3 *db, const char *zSql){
|
|
void *utf16;
|
|
sqlite3_stmt *pStmt;
|
|
const void *stmtTail;
|
|
sqlite_uint64 iStart, iElapse;
|
|
int rc;
|
|
|
|
printf("****************************************************************\n");
|
|
printf("SQL statement: [%s]\n", zSql);
|
|
utf16 = asciiToUtf16le(zSql);
|
|
iStart = sqlite3Hwtime();
|
|
rc = sqlite3_prepare16_v2(db, utf16, -1, &pStmt, &stmtTail);
|
|
iElapse = sqlite3Hwtime() - iStart;
|
|
prepTime += iElapse;
|
|
printf("sqlite3_prepare16_v2() returns %d in %llu cycles\n", rc, iElapse);
|
|
if( rc==SQLITE_OK ){
|
|
int nRow = 0;
|
|
iStart = sqlite3Hwtime();
|
|
while( (rc=sqlite3_step(pStmt))==SQLITE_ROW ){ nRow++; }
|
|
iElapse = sqlite3Hwtime() - iStart;
|
|
runTime += iElapse;
|
|
printf("sqlite3_step() returns %d after %d rows in %llu cycles\n",
|
|
rc, nRow, iElapse);
|
|
iStart = sqlite3Hwtime();
|
|
rc = sqlite3_finalize(pStmt);
|
|
iElapse = sqlite3Hwtime() - iStart;
|
|
finalizeTime += iElapse;
|
|
printf("sqlite3_finalize() returns %d in %llu cycles\n", rc, iElapse);
|
|
}
|
|
free(utf16);
|
|
}
|
|
|
|
int main(int argc, char **argv){
|
|
void *utf16;
|
|
sqlite3 *db;
|
|
int rc;
|
|
int nSql;
|
|
char *zSql;
|
|
int i, j;
|
|
FILE *in;
|
|
sqlite_uint64 iStart, iElapse;
|
|
sqlite_uint64 iSetup = 0;
|
|
int nStmt = 0;
|
|
int nByte = 0;
|
|
|
|
if( argc!=3 ){
|
|
fprintf(stderr, "Usage: %s FILENAME SQL-SCRIPT\n"
|
|
"Runs SQL-SCRIPT as UTF16 against a UTF16 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]);
|
|
utf16 = asciiToUtf16le(argv[1]);
|
|
iStart = sqlite3Hwtime();
|
|
rc = sqlite3_open16(utf16, &db);
|
|
iElapse = sqlite3Hwtime() - iStart;
|
|
iSetup = iElapse;
|
|
printf("sqlite3_open16() returns %d in %llu cycles\n", rc, iElapse);
|
|
free(utf16);
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
iStart = sqlite3Hwtime();
|
|
sqlite3_close(db);
|
|
iElapse = sqlite3Hwtime() - iStart;
|
|
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;
|
|
}
|