wasCSharpSQLite – Blame information for rev 7
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1 | office | 1 | # 2008 March 21 |
2 | # |
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3 | # The author disclaims copyright to this source code. In place of |
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4 | # a legal notice, here is a blessing: |
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5 | # |
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6 | # May you do good and not evil. |
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7 | # May you find forgiveness for yourself and forgive others. |
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8 | # May you share freely, never taking more than you give. |
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9 | # |
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10 | #************************************************************************* |
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11 | # This file implements regression tests for SQLite library. The |
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12 | # focus of this script is measuring executing speed. |
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13 | # |
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14 | # This is a copy of speed1.test modified to user prepared statements. |
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15 | # |
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16 | # $Id: speed1p.explain,v 1.1 2008/04/16 12:57:48 drh Exp $ |
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17 | # |
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18 | |||
19 | set testdir [file dirname $argv0] |
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20 | source $testdir/tester.tcl |
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21 | speed_trial_init speed1 |
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22 | |||
23 | # Set a uniform random seed |
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24 | expr srand(0) |
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25 | |||
26 | set sqlout [open speed1.txt w] |
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27 | proc tracesql {sql} { |
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28 | puts $::sqlout $sql\; |
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29 | } |
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30 | #db trace tracesql |
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31 | |||
32 | # The number_name procedure below converts its argment (an integer) |
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33 | # into a string which is the English-language name for that number. |
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34 | # |
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35 | # Example: |
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36 | # |
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37 | # puts [number_name 123] -> "one hundred twenty three" |
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38 | # |
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39 | set ones {zero one two three four five six seven eight nine |
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40 | ten eleven twelve thirteen fourteen fifteen sixteen seventeen |
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41 | eighteen nineteen} |
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42 | set tens {{} ten twenty thirty forty fifty sixty seventy eighty ninety} |
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43 | proc number_name {n} { |
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44 | if {$n>=1000} { |
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45 | set txt "[number_name [expr {$n/1000}]] thousand" |
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46 | set n [expr {$n%1000}] |
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47 | } else { |
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48 | set txt {} |
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49 | } |
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50 | if {$n>=100} { |
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51 | append txt " [lindex $::ones [expr {$n/100}]] hundred" |
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52 | set n [expr {$n%100}] |
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53 | } |
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54 | if {$n>=20} { |
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55 | append txt " [lindex $::tens [expr {$n/10}]]" |
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56 | set n [expr {$n%10}] |
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57 | } |
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58 | if {$n>0} { |
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59 | append txt " [lindex $::ones $n]" |
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60 | } |
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61 | set txt [string trim $txt] |
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62 | if {$txt==""} {set txt zero} |
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63 | return $txt |
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64 | } |
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65 | |||
66 | # Create a database schema. |
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67 | # |
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68 | do_test speed1p-1.0 { |
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69 | execsql { |
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70 | PRAGMA page_size=1024; |
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71 | PRAGMA cache_size=8192; |
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72 | PRAGMA locking_mode=EXCLUSIVE; |
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73 | CREATE TABLE t1(a INTEGER, b INTEGER, c TEXT); |
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74 | CREATE TABLE t2(a INTEGER, b INTEGER, c TEXT); |
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75 | CREATE INDEX i2a ON t2(a); |
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76 | CREATE INDEX i2b ON t2(b); |
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77 | } |
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78 | execsql { |
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79 | SELECT name FROM sqlite_master ORDER BY 1; |
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80 | } |
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81 | } {i2a i2b t1 t2} |
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82 | |||
83 | |||
84 | # 50000 INSERTs on an unindexed table |
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85 | # |
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86 | set list {} |
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87 | for {set i 1} {$i<=50000} {incr i} { |
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88 | set r [expr {int(rand()*500000)}] |
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89 | set x [number_name $r] |
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90 | lappend list $i $r $x |
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91 | } |
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92 | set script { |
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93 | foreach {i r x} $::list { |
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94 | db eval {INSERT INTO t1 VALUES($i,$r,$x)} |
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95 | } |
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96 | } |
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97 | explain {INSERT INTO t1 VALUES($i,$r,$x)} |
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98 | db eval BEGIN |
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99 | speed_trial_tcl speed1p-insert1 50000 row $script |
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100 | db eval COMMIT |
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101 | |||
102 | # 50000 INSERTs on an indexed table |
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103 | # |
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104 | set list {} |
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105 | for {set i 1} {$i<=50000} {incr i} { |
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106 | set r [expr {int(rand()*500000)}] |
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107 | set x [number_name $r] |
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108 | lappend list $i $r $x |
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109 | } |
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110 | set script { |
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111 | foreach {i r x} $::list { |
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112 | db eval {INSERT INTO t2 VALUES($i,$r,$x)} |
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113 | } |
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114 | } |
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115 | explain {INSERT INTO t2 VALUES($i,$r,$x)} |
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116 | db eval BEGIN |
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117 | speed_trial_tcl speed1p-insert2 50000 row $script |
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118 | db eval COMMIT |
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119 | |||
120 | |||
121 | |||
122 | # 50 SELECTs on an integer comparison. There is no index so |
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123 | # a full table scan is required. |
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124 | # |
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125 | set list {} |
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126 | for {set i 0} {$i<50} {incr i} { |
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127 | set lwr [expr {$i*100}] |
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128 | set upr [expr {($i+10)*100}] |
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129 | lappend list $lwr $upr |
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130 | } |
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131 | set script { |
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132 | foreach {lwr upr} $::list { |
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133 | db eval {SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr} |
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134 | } |
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135 | } |
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136 | explain {SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr} |
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137 | db eval BEGIN |
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138 | speed_trial_tcl speed1p-select1 [expr {50*50000}] row $script |
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139 | db eval COMMIT |
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140 | |||
141 | # 50 SELECTs on an LIKE comparison. There is no index so a full |
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142 | # table scan is required. |
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143 | # |
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144 | set list {} |
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145 | for {set i 0} {$i<50} {incr i} { |
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146 | lappend list "%[number_name $i]%" |
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147 | } |
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148 | set script { |
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149 | foreach pattern $::list { |
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150 | db eval {SELECT count(*), avg(b) FROM t1 WHERE c LIKE $pattern} |
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151 | } |
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152 | } |
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153 | explain {SELECT count(*), avg(b) FROM t1 WHERE c LIKE $pattern} |
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154 | db eval BEGIN |
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155 | speed_trial_tcl speed1p-select2 [expr {50*50000}] row $script |
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156 | db eval COMMIT |
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157 | |||
158 | # Create indices |
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159 | # |
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160 | explain {CREATE INDEX i1a ON t1(a)} |
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161 | explain {CREATE INDEX i1b ON t1(b)} |
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162 | db eval BEGIN |
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163 | speed_trial speed1p-createidx 150000 row { |
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164 | CREATE INDEX i1a ON t1(a); |
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165 | CREATE INDEX i1b ON t1(b); |
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166 | CREATE INDEX i1c ON t1(c); |
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167 | } |
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168 | db eval COMMIT |
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169 | |||
170 | # 5000 SELECTs on an integer comparison where the integer is |
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171 | # indexed. |
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172 | # |
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173 | set list {} |
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174 | for {set i 0} {$i<5000} {incr i} { |
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175 | set lwr [expr {$i*100}] |
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176 | set upr [expr {($i+10)*100}] |
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177 | lappend list $lwr $upr |
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178 | } |
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179 | set script { |
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180 | foreach {lwr upr} $::list { |
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181 | db eval {SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr} |
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182 | } |
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183 | } |
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184 | explain {SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr} |
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185 | db eval BEGIN |
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186 | speed_trial_tcl speed1p-select3 5000 stmt $script |
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187 | db eval COMMIT |
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188 | |||
189 | # 100000 random SELECTs against rowid. |
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190 | # |
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191 | set list {} |
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192 | for {set i 1} {$i<=100000} {incr i} { |
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193 | set id [expr {int(rand()*50000)+1}] |
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194 | lappend list $id |
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195 | } |
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196 | set script { |
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197 | foreach id $::list { |
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198 | db eval {SELECT c FROM t1 WHERE rowid=$id} |
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199 | } |
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200 | } |
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201 | explain {SELECT c FROM t1 WHERE rowid=$id} |
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202 | db eval BEGIN |
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203 | speed_trial_tcl speed1p-select4 100000 row $script |
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204 | db eval COMMIT |
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205 | |||
206 | # 100000 random SELECTs against a unique indexed column. |
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207 | # |
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208 | set list {} |
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209 | for {set i 1} {$i<=100000} {incr i} { |
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210 | set id [expr {int(rand()*50000)+1}] |
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211 | lappend list $id |
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212 | } |
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213 | set script { |
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214 | foreach id $::list { |
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215 | db eval {SELECT c FROM t1 WHERE a=$id} |
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216 | } |
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217 | } |
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218 | explain {SELECT c FROM t1 WHERE a=$id} |
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219 | db eval BEGIN |
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220 | speed_trial_tcl speed1p-select5 100000 row $script |
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221 | db eval COMMIT |
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222 | |||
223 | # 50000 random SELECTs against an indexed column text column |
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224 | # |
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225 | set list [db eval {SELECT c FROM t1 ORDER BY random() LIMIT 50000}] |
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226 | set script { |
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227 | foreach c $::list { |
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228 | db eval {SELECT c FROM t1 WHERE c=$c} |
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229 | } |
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230 | } |
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231 | explain {SELECT c FROM t1 WHERE c=$c} |
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232 | db eval BEGIN |
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233 | speed_trial_tcl speed1p-select6 50000 row $script |
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234 | db eval COMMIT |
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235 | |||
236 | |||
237 | # Vacuum |
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238 | speed_trial speed1p-vacuum 100000 row VACUUM |
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239 | |||
240 | # 5000 updates of ranges where the field being compared is indexed. |
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241 | # |
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242 | set list {} |
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243 | for {set i 0} {$i<5000} {incr i} { |
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244 | set lwr [expr {$i*2}] |
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245 | set upr [expr {($i+1)*2}] |
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246 | lappend list $lwr $upr |
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247 | } |
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248 | set script { |
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249 | foreach {lwr upr} $::list { |
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250 | db eval {UPDATE t1 SET b=b*2 WHERE a>=$lwr AND a<$upr} |
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251 | } |
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252 | } |
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253 | explain {UPDATE t1 SET b=b*2 WHERE a>=$lwr AND a<$upr} |
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254 | db eval BEGIN |
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255 | speed_trial_tcl speed1p-update1 5000 stmt $script |
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256 | db eval COMMIT |
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257 | |||
258 | # 50000 single-row updates. An index is used to find the row quickly. |
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259 | # |
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260 | set list {} |
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261 | for {set i 0} {$i<50000} {incr i} { |
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262 | set r [expr {int(rand()*500000)}] |
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263 | lappend list $i $r |
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264 | } |
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265 | set script { |
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266 | foreach {i r} $::list { |
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267 | db eval {UPDATE t1 SET b=$r WHERE a=$i} |
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268 | } |
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269 | } |
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270 | explain {UPDATE t1 SET b=$r WHERE a=$i} |
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271 | db eval BEGIN |
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272 | speed_trial_tcl speed1p-update2 50000 row $script |
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273 | db eval COMMIT |
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274 | |||
275 | # 1 big text update that touches every row in the table. |
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276 | # |
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277 | explain {UPDATE t1 SET c=a} |
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278 | speed_trial speed1p-update3 50000 row { |
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279 | UPDATE t1 SET c=a; |
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280 | } |
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281 | |||
282 | # Many individual text updates. Each row in the table is |
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283 | # touched through an index. |
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284 | # |
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285 | set list {} |
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286 | for {set i 1} {$i<=50000} {incr i} { |
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287 | set r [expr {int(rand()*500000)}] |
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288 | lappend list $i [number_name $r] |
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289 | } |
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290 | set script { |
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291 | foreach {i x} $::list { |
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292 | db eval {UPDATE t1 SET c=$x WHERE a=$i} |
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293 | } |
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294 | } |
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295 | explain {UPDATE t1 SET c=$x WHERE a=$i} |
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296 | db eval BEGIN |
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297 | speed_trial_tcl speed1p-update4 50000 row $script |
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298 | db eval COMMIT |
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299 | |||
300 | # Delete all content in a table. |
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301 | # |
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302 | explain {DELETE FROM t1} |
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303 | speed_trial speed1p-delete1 50000 row {DELETE FROM t1} |
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304 | |||
305 | # Copy one table into another |
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306 | # |
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307 | explain {INSERT INTO t1 SELECT * FROM t2} |
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308 | speed_trial speed1p-copy1 50000 row {INSERT INTO t1 SELECT * FROM t2} |
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309 | |||
310 | # Delete all content in a table, one row at a time. |
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311 | # |
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312 | explain {DELETE FROM t1 WHERE 1} |
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313 | speed_trial speed1p-delete2 50000 row {DELETE FROM t1 WHERE 1} |
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314 | |||
315 | # Refill the table yet again |
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316 | # |
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317 | speed_trial speed1p-copy2 50000 row {INSERT INTO t1 SELECT * FROM t2} |
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318 | |||
319 | # Drop the table and recreate it without its indices. |
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320 | # |
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321 | explain {DROP TABLE t1} |
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322 | explain {CREATE TABLE tX(a INTEGER, b INTEGER, c TEXT)} |
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323 | db eval BEGIN |
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324 | speed_trial speed1p-drop1 50000 row { |
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325 | DROP TABLE t1; |
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326 | CREATE TABLE t1(a INTEGER, b INTEGER, c TEXT); |
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327 | } |
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328 | db eval COMMIT |
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329 | |||
330 | # Refill the table yet again. This copy should be faster because |
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331 | # there are no indices to deal with. |
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332 | # |
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333 | speed_trial speed1p-copy3 50000 row {INSERT INTO t1 SELECT * FROM t2} |
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334 | |||
335 | # Select 20000 rows from the table at random. |
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336 | # |
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337 | explain {SELECT rowid FROM t1 ORDER BY random() LIMIT 20000} |
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338 | speed_trial speed1p-random1 50000 row { |
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339 | SELECT rowid FROM t1 ORDER BY random() LIMIT 20000 |
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340 | } |
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341 | |||
342 | # Delete 20000 random rows from the table. |
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343 | # |
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344 | explain {DELETE FROM t1 WHERE rowid IN |
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345 | (SELECT rowid FROM t1 ORDER BY random() LIMIT 20000)} |
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346 | speed_trial speed1p-random-del1 20000 row { |
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347 | DELETE FROM t1 WHERE rowid IN |
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348 | (SELECT rowid FROM t1 ORDER BY random() LIMIT 20000) |
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349 | } |
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350 | do_test speed1p-1.1 { |
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351 | db one {SELECT count(*) FROM t1} |
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352 | } 30000 |
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353 | |||
354 | |||
355 | # Delete 20000 more rows at random from the table. |
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356 | # |
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357 | speed_trial speed1p-random-del2 20000 row { |
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358 | DELETE FROM t1 WHERE rowid IN |
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359 | (SELECT rowid FROM t1 ORDER BY random() LIMIT 20000) |
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360 | } |
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361 | do_test speed1p-1.2 { |
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362 | db one {SELECT count(*) FROM t1} |
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363 | } 10000 |
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364 | speed_trial_summary speed1 |
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365 | |||
366 | finish_test |