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| 1 # 2008 August 29 | |
| 2 # | |
| 3 # The author disclaims copyright to this source code. In place of | |
| 4 # a legal notice, here is a blessing: | |
| 5 # | |
| 6 # May you do good and not evil. | |
| 7 # May you find forgiveness for yourself and forgive others. | |
| 8 # May you share freely, never taking more than you give. | |
| 9 # | |
| 10 #*********************************************************************** | |
| 11 # | |
| 12 # This file is focused on testing the pcache module. | |
| 13 # | |
| 14 # $Id: pcache.test,v 1.5 2009/05/08 06:52:48 danielk1977 Exp $ | |
| 15 | |
| 16 set testdir [file dirname $argv0] | |
| 17 source $testdir/tester.tcl | |
| 18 | |
| 19 | |
| 20 # The pcache module limits the number of pages available to purgeable | |
| 21 # caches to the sum of the 'cache_size' values for the set of open | |
| 22 # caches. This block of tests, pcache-1.*, test that the library behaves | |
| 23 # corrctly when it is forced to exceed this limit. | |
| 24 # | |
| 25 do_test pcache-1.1 { | |
| 26 db close | |
| 27 pcache_stats | |
| 28 } {current 0 max 0 min 0 recyclable 0} | |
| 29 | |
| 30 do_test pcache-1.2 { | |
| 31 sqlite3 db test.db | |
| 32 execsql { | |
| 33 PRAGMA cache_size=12; | |
| 34 PRAGMA auto_vacuum=0; | |
| 35 } | |
| 36 pcache_stats | |
| 37 } {current 1 max 12 min 10 recyclable 1} | |
| 38 | |
| 39 do_test pcache-1.3 { | |
| 40 execsql { | |
| 41 BEGIN; | |
| 42 CREATE TABLE t1(a, b, c); | |
| 43 CREATE TABLE t2(a, b, c); | |
| 44 CREATE TABLE t3(a, b, c); | |
| 45 CREATE TABLE t4(a, b, c); | |
| 46 CREATE TABLE t5(a, b, c); | |
| 47 } | |
| 48 pcache_stats | |
| 49 } {current 6 max 12 min 10 recyclable 0} | |
| 50 | |
| 51 do_test pcache-1.4 { | |
| 52 execsql { | |
| 53 CREATE TABLE t6(a, b, c); | |
| 54 CREATE TABLE t7(a, b, c); | |
| 55 CREATE TABLE t8(a, b, c); | |
| 56 CREATE TABLE t9(a, b, c); | |
| 57 } | |
| 58 pcache_stats | |
| 59 } {current 10 max 12 min 10 recyclable 0} | |
| 60 | |
| 61 do_test pcache-1.5 { | |
| 62 sqlite3 db2 test.db | |
| 63 execsql "PRAGMA cache_size=10" db2 | |
| 64 pcache_stats | |
| 65 } {current 11 max 22 min 20 recyclable 1} | |
| 66 | |
| 67 do_test pcache-1.6.1 { | |
| 68 execsql { | |
| 69 BEGIN; | |
| 70 SELECT * FROM sqlite_master; | |
| 71 } db2 | |
| 72 pcache_stats | |
| 73 } {current 11 max 22 min 20 recyclable 0} | |
| 74 | |
| 75 # At this point connection db2 has a read lock on the database file and a | |
| 76 # single pinned page in its cache. Connection [db] is holding 10 dirty | |
| 77 # pages. It cannot recycle them because of the read lock held by db2. | |
| 78 # | |
| 79 do_test pcache-1.6.2 { | |
| 80 execsql { | |
| 81 CREATE INDEX i1 ON t1(a, b); | |
| 82 CREATE INDEX i2 ON t2(a, b); | |
| 83 CREATE INDEX i3 ON t3(a, b); | |
| 84 CREATE INDEX i4 ON t4(a, b); | |
| 85 CREATE INDEX i5 ON t5(a, b); | |
| 86 CREATE INDEX i6 ON t6(a, b); | |
| 87 CREATE INDEX i7 ON t7(a, b); | |
| 88 CREATE INDEX i8 ON t8(a, b); | |
| 89 CREATE INDEX i9 ON t9(a, b); | |
| 90 CREATE INDEX i10 ON t9(a, b); | |
| 91 CREATE INDEX i11 ON t9(a, b); | |
| 92 } | |
| 93 pcache_stats | |
| 94 } {current 23 max 22 min 20 recyclable 0} | |
| 95 | |
| 96 do_test pcache-1.7 { | |
| 97 execsql { | |
| 98 CREATE TABLE t10(a, b, c); | |
| 99 } | |
| 100 pcache_stats | |
| 101 } {current 24 max 22 min 20 recyclable 0} | |
| 102 | |
| 103 # Rolling back the transaction held by db2 at this point releases a pinned | |
| 104 # page. Because the number of allocated pages is greater than the | |
| 105 # configured maximum, this page should be freed immediately instead of | |
| 106 # recycled. | |
| 107 # | |
| 108 do_test pcache-1.8 { | |
| 109 execsql {ROLLBACK} db2 | |
| 110 pcache_stats | |
| 111 } {current 23 max 22 min 20 recyclable 0} | |
| 112 | |
| 113 do_test pcache-1.9 { | |
| 114 execsql COMMIT | |
| 115 pcache_stats | |
| 116 } {current 22 max 22 min 20 recyclable 22} | |
| 117 | |
| 118 do_test pcache-1.10 { | |
| 119 db2 close | |
| 120 pcache_stats | |
| 121 } {current 12 max 12 min 10 recyclable 12} | |
| 122 | |
| 123 do_test pcache-1.11 { | |
| 124 execsql { PRAGMA cache_size = 20 } | |
| 125 pcache_stats | |
| 126 } {current 12 max 20 min 10 recyclable 12} | |
| 127 | |
| 128 do_test pcache-1.12 { | |
| 129 execsql { | |
| 130 SELECT * FROM t1 ORDER BY a; SELECT * FROM t1; | |
| 131 SELECT * FROM t2 ORDER BY a; SELECT * FROM t2; | |
| 132 SELECT * FROM t3 ORDER BY a; SELECT * FROM t3; | |
| 133 SELECT * FROM t4 ORDER BY a; SELECT * FROM t4; | |
| 134 SELECT * FROM t5 ORDER BY a; SELECT * FROM t5; | |
| 135 SELECT * FROM t6 ORDER BY a; SELECT * FROM t6; | |
| 136 SELECT * FROM t7 ORDER BY a; SELECT * FROM t7; | |
| 137 SELECT * FROM t8 ORDER BY a; SELECT * FROM t8; | |
| 138 SELECT * FROM t9 ORDER BY a; SELECT * FROM t9; | |
| 139 } | |
| 140 pcache_stats | |
| 141 } {current 19 max 20 min 10 recyclable 19} | |
| 142 | |
| 143 do_test pcache-1.13 { | |
| 144 execsql { PRAGMA cache_size = 15 } | |
| 145 pcache_stats | |
| 146 } {current 15 max 15 min 10 recyclable 15} | |
| 147 | |
| 148 do_test pcache-1.14 { | |
| 149 hexio_write test.db 24 [hexio_render_int32 1000] | |
| 150 execsql { SELECT * FROM sqlite_master } | |
| 151 pcache_stats | |
| 152 } {current 2 max 15 min 10 recyclable 2} | |
| 153 | |
| 154 do_test pcache-1.15 { | |
| 155 execsql { | |
| 156 SELECT * FROM t1 ORDER BY a; SELECT * FROM t1; | |
| 157 SELECT * FROM t2 ORDER BY a; SELECT * FROM t2; | |
| 158 SELECT * FROM t3 ORDER BY a; SELECT * FROM t3; | |
| 159 SELECT * FROM t4 ORDER BY a; SELECT * FROM t4; | |
| 160 SELECT * FROM t5 ORDER BY a; SELECT * FROM t5; | |
| 161 SELECT * FROM t6 ORDER BY a; SELECT * FROM t6; | |
| 162 SELECT * FROM t7 ORDER BY a; SELECT * FROM t7; | |
| 163 SELECT * FROM t8 ORDER BY a; SELECT * FROM t8; | |
| 164 SELECT * FROM t9 ORDER BY a; SELECT * FROM t9; | |
| 165 } | |
| 166 pcache_stats | |
| 167 } {current 14 max 15 min 10 recyclable 14} | |
| 168 | |
| 169 finish_test | |
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