third_party/sqlite/sqlite-src-3080704/ext/fts3/fts3speed.tcl

   1
   2
   3 #--------------------------------------------------------------------------
   4 # This script contains several sub-programs used to test FTS3/FTS4
   5 # performance. It does not run the queries directly, but generates SQL
   6 # scripts that can be run using the shell tool.
   7 #
   8 # The following cases are tested:
   9 #
  10 #   1. Inserting documents into an FTS3 table.
  11 #   2. Optimizing an FTS3 table (i.e. "INSERT INTO t1 VALUES('optimize')").
  12 #   3. Deleting documents from an FTS3 table.
  13 #   4. Querying FTS3 tables.
  14 #
  15
  16 # Number of tokens in vocabulary. And number of tokens in each document.
  17 #
  18 set VOCAB_SIZE  2000
  19 set DOC_SIZE     100
  20
  21 set NUM_INSERTS 100000
  22 set NUM_SELECTS 1000
  23
  24 # Force everything in this script to be deterministic.
  25 #
  26 expr {srand(0)}
  27
  28 proc usage {} {
  29   puts stderr "Usage: $::argv0 <rows> <selects>"
  30   exit -1
  31 }
  32
  33 proc sql {sql} {
  34   puts $::fd $sql
  35 }
  36
  37
  38 # Return a list of $nWord randomly generated tokens each between 2 and 10
  39 # characters in length.
  40 #
  41 proc build_vocab {nWord} {
  42   set ret [list]
  43   set chars [list a b c d e f g h i j k l m n o p q r s t u v w x y z]
  44   for {set i 0} {$i<$nWord} {incr i} {
  45     set len [expr {int((rand()*9.0)+2)}]
  46     set term ""
  47     for {set j 0} {$j<$len} {incr j} {
  48       append term [lindex $chars [expr {int(rand()*[llength $chars])}]]
  49     }
  50     lappend ret $term
  51   }
  52   set ret
  53 }
  54
  55 proc select_term {} {
  56   set n [llength $::vocab]
  57   set t [expr int(rand()*$n*3)]
  58   if {$t>=2*$n} { set t [expr {($t-2*$n)/100}] }
  59   if {$t>=$n} { set t [expr {($t-$n)/10}] }
  60   lindex $::vocab $t
  61 }
  62
  63 proc select_doc {nTerm} {
  64   set ret [list]
  65   for {set i 0} {$i<$nTerm} {incr i} {
  66     lappend ret [select_term]
  67   }
  68   set ret
  69 }
  70
  71 proc test_1 {nInsert} {
  72   sql "PRAGMA synchronous = OFF;"
  73   sql "DROP TABLE IF EXISTS t1;"
  74   sql "CREATE VIRTUAL TABLE t1 USING fts4;"
  75   for {set i 0} {$i < $nInsert} {incr i} {
  76     set doc [select_doc $::DOC_SIZE]
  77     sql "INSERT INTO t1 VALUES('$doc');"
  78   }
  79 }
  80
  81 proc test_2 {} {
  82   sql "INSERT INTO t1(t1) VALUES('optimize');"
  83 }
  84
  85 proc test_3 {nSelect} {
  86   for {set i 0} {$i < $nSelect} {incr i} {
  87     sql "SELECT count(*) FROM t1 WHERE t1 MATCH '[select_term]';"
  88   }
  89 }
  90
  91 proc test_4 {nSelect} {
  92   for {set i 0} {$i < $nSelect} {incr i} {
  93     sql "SELECT count(*) FROM t1 WHERE t1 MATCH '[select_term] [select_term]';"
  94   }
  95 }
  96
  97 if {[llength $argv]!=0} usage
  98
  99 set ::vocab [build_vocab $::VOCAB_SIZE]
 100
 101 set ::fd [open fts3speed_insert.sql w]
 102 test_1 $NUM_INSERTS
 103 close $::fd
 104
 105 set ::fd [open fts3speed_select.sql w]
 106 test_3 $NUM_SELECTS
 107 close $::fd
 108
 109 set ::fd [open fts3speed_select2.sql w]
 110 test_4 $NUM_SELECTS
 111 close $::fd
 112
 113 set ::fd [open fts3speed_optimize.sql w]
 114 test_2
 115 close $::fd
 116
 117 puts "Success. Created files:"
 118 puts "  fts3speed_insert.sql"
 119 puts "  fts3speed_select.sql"
 120 puts "  fts3speed_select2.sql"
 121 puts "  fts3speed_optimize.sql"
 122