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Improvements to the kvtest.c utility. Added the --cache-size option.

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Additional reporting of version and settings at the end of "./kvtest run".

FossilOrigin-Name: f6fcac6ae8b3bffee6bf994eef2064affd301a95
This commit is contained in:
drh
2016-12-29 14:44:43 +00:00
parent cac028ba19
commit 61c565f63b
3 changed files with 46 additions and 12 deletions
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41
test/kvtest.c
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@ -36,11 +36,13 @@ static const char zHelp[] =
" Run a performance test. DBFILE can be either the name of a\n"
" database or a directory containing sample files. Options:\n"
"\n"
" --count N Read N blobs\n"
" --asc Read blobs in ascending order\n"
" --blob-api Use the BLOB API\n"
" --random Read blobs in a random order\n"
" --cache-size N Database cache size\n"
" --count N Read N blobs\n"
" --desc Read blobs in descending order\n"
" --max-id N Maximum blob key to use\n"
" --random Read blobs in a random order\n"
" --start N Start reading with this blob key\n"
;
@ -314,6 +316,8 @@ static int runMain(int argc, char **argv){
int nExtra = 0; /* Extra cycles */
int iKey = 1; /* Next blob key */
int iMax = 1000; /* Largest allowed key */
int iPagesize = 0; /* Database page size */
int iCache = 1000; /* Database cache size in kibibytes */
int bBlobApi = 0; /* Use the incremental blob I/O API */
int eOrder = ORDER_ASC; /* Access order */
sqlite3 *db = 0; /* Database connection */
@ -354,6 +358,11 @@ static int runMain(int argc, char **argv){
if( iKey<1 ) fatalError("the --start must be positive");
continue;
}
if( strcmp(z, "-cache-size")==0 ){
if( i==argc-1 ) fatalError("missing argument on \"%s\"", argv[i]);
iCache = atoi(argv[++i]);
continue;
}
if( strcmp(z, "-random")==0 ){
eOrder = ORDER_RANDOM;
continue;
@ -374,10 +383,28 @@ static int runMain(int argc, char **argv){
}
tmStart = timeOfDay();
if( eType==PATH_DB ){
char *zSql;
rc = sqlite3_open(zDb, &db);
if( rc ){
fatalError("cannot open database \"%s\": %s", zDb, sqlite3_errmsg(db));
}
zSql = sqlite3_mprintf("PRAGMA cache_size=%d", iCache);
sqlite3_exec(db, zSql, 0, 0, 0);
sqlite3_free(zSql);
pStmt = 0;
sqlite3_prepare_v2(db, "PRAGMA page_size", -1, &pStmt, 0);
if( sqlite3_step(pStmt)==SQLITE_ROW ){
iPagesize = sqlite3_column_int(pStmt, 0);
}
sqlite3_finalize(pStmt);
sqlite3_prepare_v2(db, "PRAGMA cache_size", -1, &pStmt, 0);
if( sqlite3_step(pStmt)==SQLITE_ROW ){
iCache = sqlite3_column_int(pStmt, 0);
}else{
iCache = 0;
}
sqlite3_finalize(pStmt);
pStmt = 0;
sqlite3_exec(db, "BEGIN", 0, 0, 0);
}
for(i=0; i<nCount; i++){
@ -450,6 +477,16 @@ static int runMain(int argc, char **argv){
if( nExtra ){
printf("%d cycles due to %d misses\n", nCount, nExtra);
}
if( eType==PATH_DB ){
printf("SQLite version: %s\n", sqlite3_libversion());
}
printf("--count %d --max-id %d --cache-size %d", nCount-nExtra, iMax, iCache);
switch( eOrder ){
case ORDER_RANDOM: printf(" --random\n"); break;
case ORDER_DESC: printf(" --desc\n"); break;
default: printf(" --asc\n"); break;
}
if( iPagesize ) printf("Database page size: %d\n", iPagesize);
printf("Total elapsed time: %.3f\n", tmElapsed/1000.0);
printf("Microseconds per BLOB read: %.3f\n", tmElapsed*1000.0/nCount);
printf("Content read rate: %.1f MB/s\n", nTotal/(1000.0*tmElapsed));