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Overview
Comment: | Many improvements to the mptest program. Added a simple test script. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | mptest |
Files: | files | file ages | folders |
SHA1: |
07b0401a9b61b1664fc6dcddac3b5969 |
User & Date: | drh 2013-04-06 13:09:11.141 |
Context
2013-04-06
| ||
14:04 | Get the mptest program running on windows. (check-in: 3966b33284 user: drh tags: mptest) | |
13:09 | Many improvements to the mptest program. Added a simple test script. (check-in: 07b0401a9b user: drh tags: mptest) | |
00:19 | Add a prototype TH3-script-style test harness that starts multiple processes operating on the same database file at the same time. (check-in: c318fafe68 user: drh tags: mptest) | |
Changes
Added mptest/config01.test.
> > > > > > > > > > > > > > > > > > > | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | /* ** Configure five tasks in different ways, then run tests. */ PRAGMA page_size=8192; --task 1 PRAGMA journal_mode=PERSIST; PRAGMA mmap_limit=0; --end --task 2 PRAGMA journal_mode=TRUNCATE; PRAGMA mmap_limit=28672; --end --task 3 PRAGMA journal_mode=MEMORY; --end --task 4 PRAGMA journal_mode=OFF; --end --source multiwrite01.test |
Changes to mptest/mptest.c.
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53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 | char *zLog; /* Name of output log file */ FILE *pLog; /* Where to write log messages */ char zName[12]; /* Symbolic name of this process */ int taskId; /* Task ID. 0 means supervisor. */ int iTrace; /* Tracing level */ int bSqlTrace; /* True to trace SQL commands */ int nError; /* Number of errors */ } g; /* ** Print a message adding zPrefix[] to the beginning of every line. */ static void printWithPrefix(FILE *pOut, const char *zPrefix, const char *zMsg){ while( zMsg && zMsg[0] ){ int i; for(i=0; zMsg[i] && zMsg[i]!='\n' && zMsg[i]!='\r'; i++){} | > > > > > | 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 | char *zLog; /* Name of output log file */ FILE *pLog; /* Where to write log messages */ char zName[12]; /* Symbolic name of this process */ int taskId; /* Task ID. 0 means supervisor. */ int iTrace; /* Tracing level */ int bSqlTrace; /* True to trace SQL commands */ int nError; /* Number of errors */ int nTest; /* Number of --match operators */ int iTimeout; /* Milliseconds until a busy timeout */ } g; /* Default timeout */ #define DEFAULT_TIMEOUT 10000 /* ** Print a message adding zPrefix[] to the beginning of every line. */ static void printWithPrefix(FILE *pOut, const char *zPrefix, const char *zMsg){ while( zMsg && zMsg[0] ){ int i; for(i=0; zMsg[i] && zMsg[i]!='\n' && zMsg[i]!='\r'; i++){} |
︙ | ︙ | |||
222 223 224 225 226 227 228 | printWithPrefix(g.pErrLog, zPrefix, zMsg); fflush(g.pErrLog); maybeClose(g.pErrLog); } sqlite3_free(zMsg); if( g.db ){ int nTry = 0; | > > | | 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 | printWithPrefix(g.pErrLog, zPrefix, zMsg); fflush(g.pErrLog); maybeClose(g.pErrLog); } sqlite3_free(zMsg); if( g.db ){ int nTry = 0; g.iTimeout = 0; while( trySql("UPDATE client SET wantHalt=1;")==SQLITE_BUSY && (nTry++)<100 ){ sqlite3_sleep(10); } } sqlite3_close(g.db); exit(1); } |
︙ | ︙ | |||
257 258 259 260 261 262 263 264 265 266 267 268 269 270 | ** Return the length of a string omitting trailing whitespace */ static int clipLength(const char *z){ int n = (int)strlen(z); while( n>0 && isspace(z[n-1]) ){ n--; } return n; } /* ** SQL Trace callback */ static void sqlTraceCallback(void *NotUsed1, const char *zSql){ logMessage("[%.*s]", clipLength(zSql), zSql); } | > > > > > > > > > > > > | 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 | ** Return the length of a string omitting trailing whitespace */ static int clipLength(const char *z){ int n = (int)strlen(z); while( n>0 && isspace(z[n-1]) ){ n--; } return n; } /* ** Busy handler with a g.iTimeout-millisecond timeout */ static int busyHandler(void *pCD, int count){ if( count*10>g.iTimeout ){ if( g.iTimeout>0 ) errorMessage("timeout after %dms", g.iTimeout); return 0; } sqlite3_sleep(10); return 1; } /* ** SQL Trace callback */ static void sqlTraceCallback(void *NotUsed1, const char *zSql){ logMessage("[%.*s]", clipLength(zSql), zSql); } |
︙ | ︙ | |||
404 405 406 407 408 409 410 411 412 413 414 415 416 417 | va_list ap; char *zSql; int rc; char *zErrMsg = 0; va_start(ap, zFormat); zSql = sqlite3_vmprintf(zFormat, ap); va_end(ap); rc = sqlite3_exec(g.db, zSql, evalCallback, p, &zErrMsg); sqlite3_free(zSql); if( rc ){ char zErr[30]; sqlite3_snprintf(sizeof(zErr), zErr, "error(%d)", rc); stringAppendTerm(p, zErr); if( zErrMsg ){ | > | 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 | va_list ap; char *zSql; int rc; char *zErrMsg = 0; va_start(ap, zFormat); zSql = sqlite3_vmprintf(zFormat, ap); va_end(ap); assert( g.iTimeout>0 ); rc = sqlite3_exec(g.db, zSql, evalCallback, p, &zErrMsg); sqlite3_free(zSql); if( rc ){ char zErr[30]; sqlite3_snprintf(sizeof(zErr), zErr, "error(%d)", rc); stringAppendTerm(p, zErr); if( zErrMsg ){ |
︙ | ︙ | |||
431 432 433 434 435 436 437 438 439 440 | int iClient, /* The client number */ char **pzScript, /* Write task script here */ int *pTaskId /* Write task number here */ ){ sqlite3_stmt *pStmt = 0; int taskId; int rc; *pzScript = 0; while(1){ | > > < > | | > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | | > | < | < < < < | > > | | > | < < < | 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 | int iClient, /* The client number */ char **pzScript, /* Write task script here */ int *pTaskId /* Write task number here */ ){ sqlite3_stmt *pStmt = 0; int taskId; int rc; int totalTime = 0; *pzScript = 0; g.iTimeout = 0; while(1){ rc = trySql("BEGIN IMMEDIATE"); if( rc==SQLITE_BUSY ){ sqlite3_sleep(10); totalTime += 10; continue; } if( rc!=SQLITE_OK ){ fatalError("%s\nBEGIN IMMEDIATE", sqlite3_errmsg(g.db)); } if( g.nError || g.nTest ){ runSql("UPDATE counters SET nError=nError+%d, nTest=nTest+%d", g.nError, g.nTest); g.nError = 0; g.nTest = 0; } pStmt = prepareSql("SELECT 1 FROM client WHERE id=%d AND wantHalt",iClient); rc = sqlite3_step(pStmt); sqlite3_finalize(pStmt); if( rc==SQLITE_ROW ){ runSql("DELETE FROM client WHERE id=%d", iClient); runSql("COMMIT"); g.iTimeout = DEFAULT_TIMEOUT; return SQLITE_DONE; } pStmt = prepareSql( "SELECT script, id FROM task" " WHERE client=%d AND starttime IS NULL" " ORDER BY id LIMIT 1", iClient); rc = sqlite3_step(pStmt); if( rc==SQLITE_ROW ){ int n = sqlite3_column_bytes(pStmt, 0); *pzScript = sqlite3_malloc( n+ 1 ); strcpy(*pzScript, (const char*)sqlite3_column_text(pStmt, 0)); *pTaskId = taskId = sqlite3_column_int(pStmt, 1); sqlite3_finalize(pStmt); runSql("UPDATE task" " SET starttime=strftime('%%Y-%%m-%%d %%H:%%M:%%f','now')" " WHERE id=%d;", taskId); runSql("COMMIT;"); g.iTimeout = DEFAULT_TIMEOUT; return SQLITE_OK; } sqlite3_finalize(pStmt); if( rc==SQLITE_DONE ){ if( totalTime>30000 ){ errorMessage("Waited over 30 seconds with no work. Giving up."); runSql("DELETE FROM client WHERE id=%d; COMMIT;", iClient); sqlite3_close(g.db); exit(1); } runSql("COMMIT;"); sqlite3_sleep(100); totalTime += 100; continue; } fatalError("%s", sqlite3_errmsg(g.db)); } g.iTimeout = DEFAULT_TIMEOUT; } /* ** Mark a script as having finished. Remove the CLIENT table entry ** if bShutdown is true. */ static int finishScript(int iClient, int taskId, int bShutdown){ runSql("UPDATE task" " SET endtime=strftime('%%Y-%%m-%%d %%H:%%M:%%f','now')" " WHERE id=%d;", taskId); if( bShutdown ){ runSql("DELETE FROM client WHERE id=%d", iClient); } return SQLITE_OK; } /* ** Start up a client process for iClient, if it is not already ** running. If the client is already running, then this routine ** is a no-op. */ static void startClient(int iClient){ runSql("INSERT OR IGNORE INTO client VALUES(%d,0)", iClient); if( sqlite3_changes(g.db) ){ char *zSys; zSys = sqlite3_mprintf( "%s \"%s\" --client %d --trace %d %s&", g.argv0, g.zDbFile, iClient, g.iTrace, g.bSqlTrace ? "--sqltrace " : ""); system(zSys); sqlite3_free(zSys); } } /* ** Read the entire content of a file into memory */ static char *readFile(const char *zFilename){ FILE *in = fopen(zFilename, "rb"); |
︙ | ︙ | |||
593 594 595 596 597 598 599 | ** Wait for a client process to complete all its tasks */ static void waitForClient(int iClient, int iTimeout, char *zErrPrefix){ sqlite3_stmt *pStmt; int rc; if( iClient>0 ){ pStmt = prepareSql( | | > > > | | > > > | 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 | ** Wait for a client process to complete all its tasks */ static void waitForClient(int iClient, int iTimeout, char *zErrPrefix){ sqlite3_stmt *pStmt; int rc; if( iClient>0 ){ pStmt = prepareSql( "SELECT 1 FROM task" " WHERE client=%d" " AND client IN (SELECT id FROM client)" " AND endtime IS NULL", iClient); }else{ pStmt = prepareSql( "SELECT 1 FROM task" " WHERE client IN (SELECT id FROM client)" " AND endtime IS NULL"); } g.iTimeout = 0; while( ((rc = sqlite3_step(pStmt))==SQLITE_BUSY || rc==SQLITE_ROW) && iTimeout>0 ){ sqlite3_reset(pStmt); sqlite3_sleep(50); iTimeout -= 50; } sqlite3_finalize(pStmt); g.iTimeout = DEFAULT_TIMEOUT; if( rc!=SQLITE_DONE ){ if( zErrPrefix==0 ) zErrPrefix = ""; if( iClient>0 ){ errorMessage("%stimeout waiting for client %d", zErrPrefix, iClient); }else{ errorMessage("%stimeout waiting for all clients", zErrPrefix); } |
︙ | ︙ | |||
635 636 637 638 639 640 641 | char *zFilename /* File from which script was read. */ ){ int lineno = 1; int prevLine = 1; int ii = 0; int iBegin = 0; int n, c, j; | < < < | 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 | char *zFilename /* File from which script was read. */ ){ int lineno = 1; int prevLine = 1; int ii = 0; int iBegin = 0; int n, c, j; int len; int nArg; String sResult; char zCmd[30]; char zError[1000]; char azArg[MX_ARG][100]; memset(&sResult, 0, sizeof(sResult)); stringReset(&sResult); while( (c = zScript[ii])!=0 ){ prevLine = lineno; len = tokenLength(zScript+ii, &lineno); if( isspace(c) || (c=='/' && zScript[ii+1]=='*') ){ ii += len; |
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695 696 697 698 699 700 701 | ** --exit N ** ** Exit this process. If N>0 then exit without shutting down ** SQLite. (In other words, simulate a crash.) */ if( strcmp(zCmd, "exit")==0 ){ int rc = atoi(azArg[0]); | | | 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 | ** --exit N ** ** Exit this process. If N>0 then exit without shutting down ** SQLite. (In other words, simulate a crash.) */ if( strcmp(zCmd, "exit")==0 ){ int rc = atoi(azArg[0]); finishScript(iClient, taskId, 1); if( rc==0 ) sqlite3_close(g.db); exit(rc); }else /* ** --result ** |
︙ | ︙ | |||
723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 | char *zAns = zScript+ii; for(jj=7; jj<len-1 && isspace(zAns[jj]); jj++){} zAns += jj; if( strncmp(sResult.z, zAns, len-jj-1) ){ errorMessage("line %d of %s:\nExpected [%.*s]\n Got [%s]", prevLine, zFilename, len-jj-1, zAns, sResult.z); } stringReset(&sResult); }else /* ** --source FILENAME ** ** Run a subscript from a separate file. */ if( strcmp(zCmd, "source")==0 ){ | > | | 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 | char *zAns = zScript+ii; for(jj=7; jj<len-1 && isspace(zAns[jj]); jj++){} zAns += jj; if( strncmp(sResult.z, zAns, len-jj-1) ){ errorMessage("line %d of %s:\nExpected [%.*s]\n Got [%s]", prevLine, zFilename, len-jj-1, zAns, sResult.z); } g.nTest++; stringReset(&sResult); }else /* ** --source FILENAME ** ** Run a subscript from a separate file. */ if( strcmp(zCmd, "source")==0 ){ char *zNewFile = azArg[0]; char *zNewScript = readFile(zNewFile); if( g.iTrace ) logMessage("begin script [%s]\n", zNewFile); runScript(0, 0, zNewScript, zNewFile); sqlite3_free(zNewScript); if( g.iTrace ) logMessage("end script [%s]\n", zNewFile); }else |
︙ | ︙ | |||
758 759 760 761 762 763 764 | /* ** --start CLIENT ** ** Start up the given client. */ if( strcmp(zCmd, "start")==0 ){ int iNewClient = atoi(azArg[0]); | < | < | < < < < < < < < < < < < < < < | 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 | /* ** --start CLIENT ** ** Start up the given client. */ if( strcmp(zCmd, "start")==0 ){ int iNewClient = atoi(azArg[0]); if( iNewClient>0 ){ startClient(iNewClient); } }else /* ** --wait CLIENT TIMEOUT ** ** Wait until all tasks complete for the given client. If CLIENT is ** "all" then wait for all clients to complete. Wait no longer than |
︙ | ︙ | |||
799 800 801 802 803 804 805 | }else /* ** --task CLIENT ** <task-content-here> ** --end ** | | > < | < | < | | > | | | < < < < < | 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 | }else /* ** --task CLIENT ** <task-content-here> ** --end ** ** Assign work to a client. Start the client if it is not running ** already. */ if( strcmp(zCmd, "task")==0 ){ int iTarget = atoi(azArg[0]); int iEnd; char *zTask; iEnd = findEnd(zScript+ii+len, &lineno); if( iTarget<0 ){ errorMessage("line %d of %s: bad client number: %d", prevLine, zFilename, iTarget); }else{ zTask = sqlite3_mprintf("%.*s", iEnd, zScript+ii+len); startClient(iTarget); runSql("INSERT INTO task(client,script)" " VALUES(%d,'%q')", iTarget, zTask); sqlite3_free(zTask); } iEnd += tokenLength(zScript+ii+len+iEnd, &lineno); len += iEnd; iBegin = ii+len; }else /* error */{ errorMessage("line %d of %s: unknown command --%s", |
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960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 | }else{ iClient = 0; unlink(g.zDbFile); openFlags |= SQLITE_OPEN_CREATE; } rc = sqlite3_open_v2(g.zDbFile, &g.db, openFlags, g.zVfs); if( rc ) fatalError("cannot open [%s]", g.zDbFile); if( g.bSqlTrace ) sqlite3_trace(g.db, sqlTraceCallback, 0); if( iClient>0 ){ if( n>0 ) unrecognizedArguments(argv[0], n, argv+2); if( g.iTrace ) logMessage("start-client"); while(1){ char zTaskName[50]; rc = startScript(iClient, &zScript, &taskId); if( rc==SQLITE_DONE ) break; if( g.iTrace ) logMessage("begin task %d", taskId); sqlite3_snprintf(sizeof(zTaskName), zTaskName, "client%02d-task-%d", iClient, taskId); runScript(iClient, taskId, zScript, zTaskName); if( g.iTrace ) logMessage("end task %d", taskId); | > > | > > > | | > > > > > > | > | > | > > < | < < < | 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 | }else{ iClient = 0; unlink(g.zDbFile); openFlags |= SQLITE_OPEN_CREATE; } rc = sqlite3_open_v2(g.zDbFile, &g.db, openFlags, g.zVfs); if( rc ) fatalError("cannot open [%s]", g.zDbFile); sqlite3_busy_handler(g.db, busyHandler, 0); g.iTimeout = DEFAULT_TIMEOUT; if( g.bSqlTrace ) sqlite3_trace(g.db, sqlTraceCallback, 0); if( iClient>0 ){ if( n>0 ) unrecognizedArguments(argv[0], n, argv+2); if( g.iTrace ) logMessage("start-client"); while(1){ char zTaskName[50]; rc = startScript(iClient, &zScript, &taskId); if( rc==SQLITE_DONE ) break; if( g.iTrace ) logMessage("begin task %d", taskId); sqlite3_snprintf(sizeof(zTaskName), zTaskName, "client%02d-task-%d", iClient, taskId); runScript(iClient, taskId, zScript, zTaskName); if( g.iTrace ) logMessage("end task %d", taskId); finishScript(iClient, taskId, 0); sqlite3_sleep(10); } if( g.iTrace ) logMessage("end-client"); }else{ sqlite3_stmt *pStmt; int iTimeout; if( n==0 ){ fatalError("missing script filename"); } if( n>1 ) unrecognizedArguments(argv[0], n, argv+2); runSql( "CREATE TABLE task(\n" " id INTEGER PRIMARY KEY,\n" " client INTEGER,\n" " starttime DATE,\n" " endtime DATE,\n" " script TEXT\n" ");" "CREATE INDEX task_i1 ON task(client, starttime);\n" "CREATE INDEX task_i2 ON task(client, endtime);\n" "CREATE TABLE counters(nError,nTest);\n" "INSERT INTO counters VALUES(0,0);\n" "CREATE TABLE client(id INTEGER PRIMARY KEY, wantHalt);\n" ); zScript = readFile(argv[2]); if( g.iTrace ) logMessage("begin script [%s]\n", argv[2]); runScript(0, 0, zScript, argv[2]); sqlite3_free(zScript); if( g.iTrace ) logMessage("end script [%s]\n", argv[2]); waitForClient(0, 2000, "during shutdown...\n"); trySql("UPDATE client SET wantHalt=1"); sqlite3_sleep(10); g.iTimeout = 0; iTimeout = 1000; while( ((rc = trySql("SELECT 1 FROM client"))==SQLITE_BUSY || rc==SQLITE_ROW) && iTimeout>0 ){ sqlite3_sleep(10); iTimeout -= 10; } sqlite3_sleep(100); pStmt = prepareSql("SELECT nError, nTest FROM counters"); iTimeout = 1000; while( (rc = sqlite3_step(pStmt))==SQLITE_BUSY && iTimeout>0 ){ sqlite3_sleep(10); iTimeout -= 10; } if( rc==SQLITE_ROW ){ g.nError += sqlite3_column_int(pStmt, 0); g.nTest += sqlite3_column_int(pStmt, 1); } sqlite3_finalize(pStmt); } sqlite3_close(g.db); maybeClose(g.pLog); maybeClose(g.pErrLog); if( iClient==0 ){ printf("Summary: %d errors in %d tests\n", g.nError, g.nTest); } return g.nError>0; } |
Added mptest/multiwrite01.test.
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | /* ** This script sets up five different tasks all writing and updating ** the database at the same time, but each in its own table. */ --task 1 DROP TABLE IF EXISTS t1; CREATE TABLE t1(a INTEGER PRIMARY KEY, b); --sleep 1 INSERT INTO t1 VALUES(1, randomblob(2000)); INSERT INTO t1 VALUES(2, randomblob(1000)); --sleep 1 INSERT INTO t1 SELECT a+2, randomblob(1500) FROM t1; INSERT INTO t1 SELECT a+4, randomblob(1500) FROM t1; INSERT INTO t1 SELECT a+8, randomblob(1500) FROM t1; --sleep 1 INSERT INTO t1 SELECT a+16, randomblob(1500) FROM t1; --sleep 1 INSERT INTO t1 SELECT a+32, randomblob(1500) FROM t1; SELECT count(*) FROM t1; --match 64 SELECT avg(length(b)) FROM t1; --match 1500.0 --sleep 2 UPDATE t1 SET b='x'||a||'y'; SELECT total(length(b)) FROM t1; --match 247 --end --task 2 DROP TABLE IF EXISTS t2; CREATE TABLE t2(a INTEGER PRIMARY KEY, b); --sleep 1 INSERT INTO t2 VALUES(1, randomblob(2000)); INSERT INTO t2 VALUES(2, randomblob(1000)); --sleep 1 INSERT INTO t2 SELECT a+2, randomblob(1500) FROM t2; INSERT INTO t2 SELECT a+4, randomblob(1500) FROM t2; INSERT INTO t2 SELECT a+8, randomblob(1500) FROM t2; --sleep 1 INSERT INTO t2 SELECT a+16, randomblob(1500) FROM t2; --sleep 1 INSERT INTO t2 SELECT a+32, randomblob(1500) FROM t2; SELECT count(*) FROM t2; --match 64 SELECT avg(length(b)) FROM t2; --match 1500.0 --sleep 2 UPDATE t2 SET b='x'||a||'y'; SELECT total(length(b)) FROM t2; --match 247 --end --task 3 DROP TABLE IF EXISTS t3; CREATE TABLE t3(a INTEGER PRIMARY KEY, b); --sleep 1 INSERT INTO t3 VALUES(1, randomblob(2000)); INSERT INTO t3 VALUES(2, randomblob(1000)); --sleep 1 INSERT INTO t3 SELECT a+2, randomblob(1500) FROM t3; INSERT INTO t3 SELECT a+4, randomblob(1500) FROM t3; INSERT INTO t3 SELECT a+8, randomblob(1500) FROM t3; --sleep 1 INSERT INTO t3 SELECT a+16, randomblob(1500) FROM t3; --sleep 1 INSERT INTO t3 SELECT a+32, randomblob(1500) FROM t3; SELECT count(*) FROM t3; --match 64 SELECT avg(length(b)) FROM t3; --match 1500.0 --sleep 2 UPDATE t3 SET b='x'||a||'y'; SELECT total(length(b)) FROM t3; --match 247 --end --task 4 DROP TABLE IF EXISTS t4; CREATE TABLE t4(a INTEGER PRIMARY KEY, b); --sleep 1 INSERT INTO t4 VALUES(1, randomblob(2000)); INSERT INTO t4 VALUES(2, randomblob(1000)); --sleep 1 INSERT INTO t4 SELECT a+2, randomblob(1500) FROM t4; INSERT INTO t4 SELECT a+4, randomblob(1500) FROM t4; INSERT INTO t4 SELECT a+8, randomblob(1500) FROM t4; --sleep 1 INSERT INTO t4 SELECT a+16, randomblob(1500) FROM t4; --sleep 1 INSERT INTO t4 SELECT a+32, randomblob(1500) FROM t4; SELECT count(*) FROM t4; --match 64 SELECT avg(length(b)) FROM t4; --match 1500.0 --sleep 2 UPDATE t4 SET b='x'||a||'y'; SELECT total(length(b)) FROM t4; --match 247 --end --task 5 DROP TABLE IF EXISTS t5; CREATE TABLE t5(a INTEGER PRIMARY KEY, b); --sleep 1 INSERT INTO t5 VALUES(1, randomblob(2000)); INSERT INTO t5 VALUES(2, randomblob(1000)); --sleep 1 INSERT INTO t5 SELECT a+2, randomblob(1500) FROM t5; INSERT INTO t5 SELECT a+4, randomblob(1500) FROM t5; INSERT INTO t5 SELECT a+8, randomblob(1500) FROM t5; --sleep 1 INSERT INTO t5 SELECT a+16, randomblob(1500) FROM t5; --sleep 1 INSERT INTO t5 SELECT a+32, randomblob(1500) FROM t5; SELECT count(*) FROM t5; --match 64 SELECT avg(length(b)) FROM t5; --match 1500.0 --sleep 2 UPDATE t5 SET b='x'||a||'y'; SELECT total(length(b)) FROM t5; --match 247 --end --wait all SELECT count(*), total(length(b)) FROM t1; --match 64 247 SELECT count(*), total(length(b)) FROM t2; --match 64 247 SELECT count(*), total(length(b)) FROM t3; --match 64 247 SELECT count(*), total(length(b)) FROM t4; --match 64 247 SELECT count(*), total(length(b)) FROM t5; --match 64 247 DROP TABLE t1; DROP TABLE t2; DROP TABLE t3; DROP TABLE t4; DROP TABLE t5; |