wasCSharpSQLite – Blame information for rev 7
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1 | office | 1 | # 2006 November 23 |
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 | # $Id: speed2.test,v 1.7 2007/04/16 15:02:20 drh Exp $ |
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15 | # |
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16 | |||
17 | set testdir [file dirname $argv0] |
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18 | source $testdir/tester.tcl |
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19 | speed_trial_init speed2 |
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20 | |||
21 | # Set a uniform random seed |
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22 | expr srand(0) |
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23 | |||
24 | set sqlout [open speed2.txt w] |
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25 | proc tracesql {sql} { |
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26 | puts $::sqlout $sql\; |
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27 | } |
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28 | #db trace tracesql |
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29 | |||
30 | # The number_name procedure below converts its argment (an integer) |
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31 | # into a string which is the English-language name for that number. |
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32 | # |
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33 | # Example: |
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34 | # |
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35 | # puts [number_name 123] -> "one hundred twenty three" |
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36 | # |
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37 | set ones {zero one two three four five six seven eight nine |
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38 | ten eleven twelve thirteen fourteen fifteen sixteen seventeen |
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39 | eighteen nineteen} |
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40 | set tens {{} ten twenty thirty forty fifty sixty seventy eighty ninety} |
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41 | proc number_name {n} { |
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42 | if {$n>=1000} { |
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43 | set txt "[number_name [expr {$n/1000}]] thousand" |
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44 | set n [expr {$n%1000}] |
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45 | } else { |
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46 | set txt {} |
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47 | } |
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48 | if {$n>=100} { |
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49 | append txt " [lindex $::ones [expr {$n/100}]] hundred" |
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50 | set n [expr {$n%100}] |
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51 | } |
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52 | if {$n>=20} { |
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53 | append txt " [lindex $::tens [expr {$n/10}]]" |
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54 | set n [expr {$n%10}] |
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55 | } |
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56 | if {$n>0} { |
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57 | append txt " [lindex $::ones $n]" |
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58 | } |
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59 | set txt [string trim $txt] |
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60 | if {$txt==""} {set txt zero} |
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61 | return $txt |
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62 | } |
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63 | |||
64 | # Create a database schema. |
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65 | # |
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66 | do_test speed2-1.0 { |
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67 | execsql { |
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68 | PRAGMA page_size=1024; |
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69 | PRAGMA cache_size=8192; |
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70 | PRAGMA locking_mode=EXCLUSIVE; |
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71 | CREATE TABLE t1(a INTEGER, b INTEGER, c TEXT); |
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72 | CREATE TABLE t2(a INTEGER, b INTEGER, c TEXT); |
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73 | CREATE INDEX i2a ON t2(a); |
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74 | CREATE INDEX i2b ON t2(b); |
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75 | } |
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76 | execsql { |
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77 | SELECT name FROM sqlite_master ORDER BY 1; |
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78 | } |
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79 | } {i2a i2b t1 t2} |
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80 | |||
81 | |||
82 | # 50000 INSERTs on an unindexed table |
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83 | # |
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84 | set sql {} |
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85 | for {set i 1} {$i<=50000} {incr i} { |
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86 | set r [expr {int(rand()*500000)}] |
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87 | append sql "INSERT INTO t1 VALUES($i,$r,'[number_name $r]');\n" |
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88 | } |
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89 | db eval BEGIN |
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90 | speed_trial speed2-insert1 50000 row $sql |
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91 | db eval COMMIT |
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92 | |||
93 | # 50000 INSERTs on an indexed table |
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94 | # |
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95 | set sql {} |
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96 | for {set i 1} {$i<=50000} {incr i} { |
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97 | set r [expr {int(rand()*500000)}] |
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98 | append sql "INSERT INTO t2 VALUES($i,$r,'[number_name $r]');\n" |
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99 | } |
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100 | db eval BEGIN |
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101 | speed_trial speed2-insert2 50000 row $sql |
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102 | db eval COMMIT |
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103 | |||
104 | |||
105 | |||
106 | # 50 SELECTs on an integer comparison. There is no index so |
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107 | # a full table scan is required. |
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108 | # |
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109 | set sql {} |
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110 | for {set i 0} {$i<50} {incr i} { |
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111 | set lwr [expr {$i*100}] |
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112 | set upr [expr {($i+10)*100}] |
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113 | append sql "SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr;" |
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114 | } |
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115 | speed_trial speed2-select1a [expr {50*50000}] row $sql |
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116 | |||
117 | # 50 SELECTs on an LIKE comparison. There is no index so a full |
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118 | # table scan is required. |
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119 | # |
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120 | set sql {} |
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121 | for {set i 0} {$i<50} {incr i} { |
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122 | append sql \ |
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123 | "SELECT count(*), avg(b) FROM t1 WHERE c LIKE '%[number_name $i]%';" |
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124 | } |
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125 | speed_trial speed2-select2a [expr {50*50000}] row $sql |
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126 | |||
127 | # Vacuum |
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128 | speed_trial speed2-vacuum1 100000 row VACUUM |
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129 | |||
130 | # 50 SELECTs on an integer comparison. There is no index so |
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131 | # a full table scan is required. |
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132 | # |
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133 | set sql {} |
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134 | for {set i 0} {$i<50} {incr i} { |
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135 | set lwr [expr {$i*100}] |
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136 | set upr [expr {($i+10)*100}] |
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137 | append sql "SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr;" |
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138 | } |
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139 | speed_trial speed2-select1b [expr {50*50000}] row $sql |
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140 | |||
141 | # 50 SELECTs on an LIKE comparison. There is no index so a full |
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142 | # table scan is required. |
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143 | # |
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144 | set sql {} |
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145 | for {set i 0} {$i<50} {incr i} { |
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146 | append sql \ |
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147 | "SELECT count(*), avg(b) FROM t1 WHERE c LIKE '%[number_name $i]%';" |
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148 | } |
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149 | speed_trial speed2-select2b [expr {50*50000}] row $sql |
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150 | |||
151 | # Create indices |
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152 | # |
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153 | db eval BEGIN |
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154 | speed_trial speed2-createidx 150000 row { |
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155 | CREATE INDEX i1a ON t1(a); |
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156 | CREATE INDEX i1b ON t1(b); |
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157 | CREATE INDEX i1c ON t1(c); |
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158 | } |
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159 | db eval COMMIT |
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160 | |||
161 | # 5000 SELECTs on an integer comparison where the integer is |
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162 | # indexed. |
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163 | # |
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164 | set sql {} |
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165 | for {set i 0} {$i<5000} {incr i} { |
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166 | set lwr [expr {$i*100}] |
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167 | set upr [expr {($i+10)*100}] |
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168 | append sql "SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr;" |
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169 | } |
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170 | speed_trial speed2-select3a 5000 stmt $sql |
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171 | |||
172 | # 100000 random SELECTs against rowid. |
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173 | # |
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174 | set sql {} |
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175 | for {set i 1} {$i<=100000} {incr i} { |
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176 | set id [expr {int(rand()*50000)+1}] |
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177 | append sql "SELECT c=='hi' FROM t1 WHERE rowid=$id;\n" |
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178 | } |
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179 | speed_trial speed2-select4a 100000 row $sql |
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180 | |||
181 | # 100000 random SELECTs against a unique indexed column. |
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182 | # |
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183 | set sql {} |
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184 | for {set i 1} {$i<=100000} {incr i} { |
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185 | set id [expr {int(rand()*50000)+1}] |
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186 | append sql "SELECT c FROM t1 WHERE a=$id;" |
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187 | } |
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188 | speed_trial speed2-select5a 100000 row $sql |
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189 | |||
190 | # 50000 random SELECTs against an indexed column text column |
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191 | # |
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192 | set sql {} |
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193 | db eval {SELECT c FROM t1 ORDER BY random() LIMIT 50000} { |
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194 | append sql "SELECT c FROM t1 WHERE c='$c';" |
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195 | } |
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196 | speed_trial speed2-select6a 50000 row $sql |
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197 | |||
198 | # Vacuum |
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199 | speed_trial speed2-vacuum2 100000 row VACUUM |
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200 | |||
201 | |||
202 | # 5000 SELECTs on an integer comparison where the integer is |
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203 | # indexed. |
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204 | # |
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205 | set sql {} |
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206 | for {set i 0} {$i<5000} {incr i} { |
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207 | set lwr [expr {$i*100}] |
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208 | set upr [expr {($i+10)*100}] |
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209 | append sql "SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr;" |
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210 | } |
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211 | speed_trial speed2-select3b 5000 stmt $sql |
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212 | |||
213 | # 100000 random SELECTs against rowid. |
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214 | # |
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215 | set sql {} |
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216 | for {set i 1} {$i<=100000} {incr i} { |
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217 | set id [expr {int(rand()*50000)+1}] |
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218 | append sql "SELECT c=='hi' FROM t1 WHERE rowid=$id;\n" |
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219 | } |
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220 | speed_trial speed2-select4b 100000 row $sql |
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221 | |||
222 | # 100000 random SELECTs against a unique indexed column. |
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223 | # |
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224 | set sql {} |
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225 | for {set i 1} {$i<=100000} {incr i} { |
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226 | set id [expr {int(rand()*50000)+1}] |
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227 | append sql "SELECT c FROM t1 WHERE a=$id;" |
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228 | } |
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229 | speed_trial speed2-select5b 100000 row $sql |
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230 | |||
231 | # 50000 random SELECTs against an indexed column text column |
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232 | # |
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233 | set sql {} |
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234 | db eval {SELECT c FROM t1 ORDER BY random() LIMIT 50000} { |
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235 | append sql "SELECT c FROM t1 WHERE c='$c';" |
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236 | } |
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237 | speed_trial speed2-select6b 50000 row $sql |
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238 | |||
239 | # 5000 updates of ranges where the field being compared is indexed. |
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240 | # |
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241 | set sql {} |
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242 | for {set i 0} {$i<5000} {incr i} { |
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243 | set lwr [expr {$i*2}] |
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244 | set upr [expr {($i+1)*2}] |
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245 | append sql "UPDATE t1 SET b=b*2 WHERE a>=$lwr AND a<$upr;" |
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246 | } |
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247 | db eval BEGIN |
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248 | speed_trial speed2-update1 5000 stmt $sql |
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249 | db eval COMMIT |
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250 | |||
251 | # 50000 single-row updates. An index is used to find the row quickly. |
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252 | # |
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253 | set sql {} |
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254 | for {set i 0} {$i<50000} {incr i} { |
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255 | set r [expr {int(rand()*500000)}] |
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256 | append sql "UPDATE t1 SET b=$r WHERE a=$i;" |
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257 | } |
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258 | db eval BEGIN |
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259 | speed_trial speed2-update2 50000 row $sql |
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260 | db eval COMMIT |
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261 | |||
262 | # 1 big text update that touches every row in the table. |
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263 | # |
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264 | speed_trial speed2-update3 50000 row { |
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265 | UPDATE t1 SET c=a; |
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266 | } |
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267 | |||
268 | # Many individual text updates. Each row in the table is |
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269 | # touched through an index. |
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270 | # |
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271 | set sql {} |
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272 | for {set i 1} {$i<=50000} {incr i} { |
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273 | set r [expr {int(rand()*500000)}] |
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274 | append sql "UPDATE t1 SET c='[number_name $r]' WHERE a=$i;" |
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275 | } |
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276 | db eval BEGIN |
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277 | speed_trial speed2-update4 50000 row $sql |
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278 | db eval COMMIT |
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279 | |||
280 | # Delete all content in a table. |
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281 | # |
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282 | speed_trial speed2-delete1 50000 row {DELETE FROM t1} |
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283 | |||
284 | # Copy one table into another |
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285 | # |
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286 | speed_trial speed2-copy1 50000 row {INSERT INTO t1 SELECT * FROM t2} |
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287 | |||
288 | # Delete all content in a table, one row at a time. |
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289 | # |
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290 | speed_trial speed2-delete2 50000 row {DELETE FROM t1 WHERE 1} |
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291 | |||
292 | # Refill the table yet again |
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293 | # |
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294 | speed_trial speed2-copy2 50000 row {INSERT INTO t1 SELECT * FROM t2} |
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295 | |||
296 | # Drop the table and recreate it without its indices. |
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297 | # |
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298 | db eval BEGIN |
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299 | speed_trial speed2-drop1 50000 row { |
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300 | DROP TABLE t1; |
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301 | CREATE TABLE t1(a INTEGER, b INTEGER, c TEXT); |
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302 | } |
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303 | db eval COMMIT |
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304 | |||
305 | # Refill the table yet again. This copy should be faster because |
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306 | # there are no indices to deal with. |
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307 | # |
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308 | speed_trial speed2-copy3 50000 row {INSERT INTO t1 SELECT * FROM t2} |
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309 | |||
310 | # Select 20000 rows from the table at random. |
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311 | # |
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312 | speed_trial speed2-random1 50000 row { |
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313 | SELECT rowid FROM t1 ORDER BY random() LIMIT 20000 |
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314 | } |
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315 | |||
316 | # Delete 20000 random rows from the table. |
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317 | # |
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318 | speed_trial speed2-random-del1 20000 row { |
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319 | DELETE FROM t1 WHERE rowid IN |
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320 | (SELECT rowid FROM t1 ORDER BY random() LIMIT 20000) |
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321 | } |
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322 | do_test speed2-1.1 { |
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323 | db one {SELECT count(*) FROM t1} |
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324 | } 30000 |
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325 | |||
326 | |||
327 | # Delete 20000 more rows at random from the table. |
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328 | # |
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329 | speed_trial speed2-random-del2 20000 row { |
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330 | DELETE FROM t1 WHERE rowid IN |
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331 | (SELECT rowid FROM t1 ORDER BY random() LIMIT 20000) |
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332 | } |
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333 | do_test speed2-1.2 { |
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334 | db one {SELECT count(*) FROM t1} |
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335 | } 10000 |
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336 | speed_trial_summary speed2 |
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337 | |||
338 | |||
339 | finish_test |