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| 1 # 2007 May 17 | |
| 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 # This file implements regression tests for SQLite library. The | |
| 12 # focus of this script is testing that the overflow-page related | |
| 13 # enhancements added after version 3.3.17 speed things up. | |
| 14 # | |
| 15 # $Id: speed3.test,v 1.6 2009/07/09 02:48:24 shane Exp $ | |
| 16 # | |
| 17 | |
| 18 #--------------------------------------------------------------------- | |
| 19 # Test plan: | |
| 20 # | |
| 21 # If auto-vacuum is enabled for the database, the following cases | |
| 22 # should show performance improvement with respect to 3.3.17. | |
| 23 # | |
| 24 # + When deleting rows that span overflow pages. This is faster | |
| 25 # because the overflow pages no longer need to be read before | |
| 26 # they can be moved to the free list (test cases speed3-1.X). | |
| 27 # | |
| 28 # + When reading a column value stored on an overflow page that | |
| 29 # is not the first overflow page for the row. The improvement | |
| 30 # in this case is because the overflow pages between the tree | |
| 31 # page and the overflow page containing the value do not have | |
| 32 # to be read (test cases speed3-2.X). | |
| 33 # | |
| 34 | |
| 35 set testdir [file dirname $argv0] | |
| 36 source $testdir/tester.tcl | |
| 37 | |
| 38 ifcapable !tclvar||!attach { | |
| 39 finish_test | |
| 40 return | |
| 41 } | |
| 42 | |
| 43 speed_trial_init speed1 | |
| 44 | |
| 45 # Set a uniform random seed | |
| 46 expr srand(0) | |
| 47 | |
| 48 set ::NROW 1000 | |
| 49 | |
| 50 # The number_name procedure below converts its argment (an integer) | |
| 51 # into a string which is the English-language name for that number. | |
| 52 # | |
| 53 # Example: | |
| 54 # | |
| 55 # puts [number_name 123] -> "one hundred twenty three" | |
| 56 # | |
| 57 set ones {zero one two three four five six seven eight nine | |
| 58 ten eleven twelve thirteen fourteen fifteen sixteen seventeen | |
| 59 eighteen nineteen} | |
| 60 set tens {{} ten twenty thirty forty fifty sixty seventy eighty ninety} | |
| 61 proc number_name {n} { | |
| 62 if {$n>=1000} { | |
| 63 set txt "[number_name [expr {$n/1000}]] thousand" | |
| 64 set n [expr {$n%1000}] | |
| 65 } else { | |
| 66 set txt {} | |
| 67 } | |
| 68 if {$n>=100} { | |
| 69 append txt " [lindex $::ones [expr {$n/100}]] hundred" | |
| 70 set n [expr {$n%100}] | |
| 71 } | |
| 72 if {$n>=20} { | |
| 73 append txt " [lindex $::tens [expr {$n/10}]]" | |
| 74 set n [expr {$n%10}] | |
| 75 } | |
| 76 if {$n>0} { | |
| 77 append txt " [lindex $::ones $n]" | |
| 78 } | |
| 79 set txt [string trim $txt] | |
| 80 if {$txt==""} {set txt zero} | |
| 81 return $txt | |
| 82 } | |
| 83 | |
| 84 proc populate_t1 {db} { | |
| 85 $db transaction { | |
| 86 for {set ii 0} {$ii < $::NROW} {incr ii} { | |
| 87 set N [number_name $ii] | |
| 88 set repeats [expr {(10000/[string length $N])+1}] | |
| 89 set text [string range [string repeat $N $repeats] 0 10000] | |
| 90 $db eval {INSERT INTO main.t1 VALUES($ii, $text, $ii)} | |
| 91 } | |
| 92 $db eval {INSERT INTO aux.t1 SELECT * FROM main.t1} | |
| 93 } | |
| 94 } | |
| 95 | |
| 96 | |
| 97 proc io_log {db} { | |
| 98 db_enter db | |
| 99 array set stats1 [btree_pager_stats [btree_from_db db]] | |
| 100 array set stats2 [btree_pager_stats [btree_from_db db 2]] | |
| 101 db_leave db | |
| 102 # puts "1: [array get stats1]" | |
| 103 # puts "2: [array get stats2]" | |
| 104 puts "Incrvacuum: Read $stats1(read), wrote $stats1(write)" | |
| 105 puts "Normal : Read $stats2(read), wrote $stats2(write)" | |
| 106 } | |
| 107 | |
| 108 proc reset_db {} { | |
| 109 db close | |
| 110 sqlite3 db test.db | |
| 111 db eval { | |
| 112 PRAGMA main.cache_size = 200000; | |
| 113 PRAGMA main.auto_vacuum = 'incremental'; | |
| 114 ATTACH 'test2.db' AS 'aux'; | |
| 115 PRAGMA aux.auto_vacuum = 'none'; | |
| 116 } | |
| 117 } | |
| 118 | |
| 119 forcedelete test2.db test2.db-journal | |
| 120 reset_db | |
| 121 | |
| 122 # Set up a database in auto-vacuum mode and create a database schema. | |
| 123 # | |
| 124 do_test speed3-0.1 { | |
| 125 execsql { | |
| 126 CREATE TABLE main.t1(a INTEGER, b TEXT, c INTEGER); | |
| 127 } | |
| 128 execsql { | |
| 129 SELECT name FROM sqlite_master ORDER BY 1; | |
| 130 } | |
| 131 } {t1} | |
| 132 do_test speed3-0.2 { | |
| 133 execsql { | |
| 134 CREATE TABLE aux.t1(a INTEGER, b TEXT, c INTEGER); | |
| 135 } | |
| 136 execsql { | |
| 137 SELECT name FROM aux.sqlite_master ORDER BY 1; | |
| 138 } | |
| 139 } {t1} | |
| 140 do_test speed3-0.3 { | |
| 141 populate_t1 db | |
| 142 execsql { | |
| 143 SELECT count(*) FROM main.t1; | |
| 144 SELECT count(*) FROM aux.t1; | |
| 145 } | |
| 146 } "$::NROW $::NROW" | |
| 147 do_test speed3-0.4 { | |
| 148 execsql { | |
| 149 PRAGMA main.auto_vacuum; | |
| 150 PRAGMA aux.auto_vacuum; | |
| 151 } | |
| 152 } {2 0} | |
| 153 | |
| 154 # Delete all content in a table, one row at a time. | |
| 155 # | |
| 156 #io_log db | |
| 157 reset_db | |
| 158 speed_trial speed3-1.incrvacuum $::NROW row {DELETE FROM main.t1 WHERE 1} | |
| 159 speed_trial speed3-1.normal $::NROW row {DELETE FROM aux.t1 WHERE 1} | |
| 160 io_log db | |
| 161 | |
| 162 # Select the "C" column (located at the far end of the overflow | |
| 163 # chain) from each table row. | |
| 164 # | |
| 165 #db eval {PRAGMA incremental_vacuum(500000)} | |
| 166 populate_t1 db | |
| 167 reset_db | |
| 168 speed_trial speed3-2.incrvacuum $::NROW row {SELECT c FROM main.t1} | |
| 169 speed_trial speed3-2.normal $::NROW row {SELECT c FROM aux.t1} | |
| 170 io_log db | |
| 171 | |
| 172 finish_test | |
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Chromium Code Reviews
Issue 2363173002:
[sqlite] Remove obsolete reference version 3.8.7.4. (Closed)
