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

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

FossilOrigin-Name: f6fcac6ae8b3bffee6bf994eef2064affd301a95

manifest

@@ -1,5 +1,5 @@
-C Add\sthe\skvtest.c\stest\sprogram\sfor\smeasuring\skey/value\sread\sperformance\sunder\nvarious\sscenarios.
-D 2016-12-29T03:57:43.130
+C Improvements\sto\sthe\skvtest.c\sutility.\s\sAdded\sthe\s--cache-size\soption.\nAdditional\sreporting\sof\sversion\sand\ssettings\sat\sthe\send\sof\s"./kvtest\srun".
+D 2016-12-29T14:44:43.614
 F Makefile.in 41bd4cad981487345c4a84081074bcdb876e4b2e
 F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
 F Makefile.msc b8ca53350ae545e3562403d5da2a69cec79308da
@@ -894,7 +894,7 @@ F test/json101.test c0897616f32d95431f37fd291cb78742181980ac
 F test/json102.test bf3fe7a706d30936a76a0f7a0375e1e8e73aff5a
 F test/json103.test c5f6b85e69de05f6b3195f9f9d5ce9cd179099a0
 F test/keyword1.test 37ef6bba5d2ed5b07ecdd6810571de2956599dff
-F test/kvtest.c 1f8e6f0352ebb0ef4179cd7968af594eee130d57
+F test/kvtest.c c3dac524f2eb0f73dbeea6c20f5154cfeaf17cbb
 F test/lastinsert.test 42e948fd6442f07d60acbd15d33fb86473e0ef63
 F test/laststmtchanges.test ae613f53819206b3222771828d024154d51db200
 F test/like.test 0603f4fa0dad50987f70032c05800cbfa8985302
@@ -1540,10 +1540,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P a6af06f164b1f65779e2171ec4946119c66f9be8
-R a9bf163ca1249527027c884b8ea94c96
-T *branch * kvtest
-T *sym-kvtest *
-T -sym-trunk *
+P 489e0787c1ea47963174387e8ade6295ceff568e
+R a988144fafa83a0cd326685ae38da518
 U drh
-Z fb835c04c55072b05b31100f6eb7b616
+Z 4424d9424f7545651642c0148887a562

manifest.uuid

@@ -1 +1 @@
-489e0787c1ea47963174387e8ade6295ceff568e
+f6fcac6ae8b3bffee6bf994eef2064affd301a95

test/kvtest.c

@@ -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));