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#--------------------------------------------------------------------------
# This script contains several sub-programs used to test FTS3/FTS4
# performance. It does not run the queries directly, but generates SQL
# scripts that can be run using the shell tool.
#
# The following cases are tested:
#
# 1. Inserting documents into an FTS3 table.
# 2. Optimizing an FTS3 table (i.e. "INSERT INTO t1 VALUES('optimize')").
# 3. Deleting documents from an FTS3 table.
# 4. Querying FTS3 tables.
#
# Number of tokens in vocabulary. And number of tokens in each document.
#
set VOCAB_SIZE 2000
set DOC_SIZE 100
set NUM_INSERTS 100000
set NUM_SELECTS 1000
# Force everything in this script to be deterministic.
#
expr {srand(0)}
proc usage {} {
puts stderr "Usage: $::argv0 <rows> <selects>"
exit -1
}
proc sql {sql} {
puts $::fd $sql
}
# Return a list of $nWord randomly generated tokens each between 2 and 10
# characters in length.
#
proc build_vocab {nWord} {
set ret [list]
set chars [list a b c d e f g h i j k l m n o p q r s t u v w x y z]
for {set i 0} {$i<$nWord} {incr i} {
set len [expr {int((rand()*9.0)+2)}]
set term ""
for {set j 0} {$j<$len} {incr j} {
append term [lindex $chars [expr {int(rand()*[llength $chars])}]]
}
lappend ret $term
}
set ret
}
proc select_term {} {
set n [llength $::vocab]
set t [expr int(rand()*$n*3)]
if {$t>=2*$n} { set t [expr {($t-2*$n)/100}] }
if {$t>=$n} { set t [expr {($t-$n)/10}] }
lindex $::vocab $t
}
proc select_doc {nTerm} {
set ret [list]
for {set i 0} {$i<$nTerm} {incr i} {
lappend ret [select_term]
}
set ret
}
proc test_1 {nInsert} {
sql "PRAGMA synchronous = OFF;"
sql "DROP TABLE IF EXISTS t1;"
sql "CREATE VIRTUAL TABLE t1 USING fts4;"
for {set i 0} {$i < $nInsert} {incr i} {
set doc [select_doc $::DOC_SIZE]
sql "INSERT INTO t1 VALUES('$doc');"
}
}
proc test_2 {} {
sql "INSERT INTO t1(t1) VALUES('optimize');"
}
proc test_3 {nSelect} {
for {set i 0} {$i < $nSelect} {incr i} {
sql "SELECT count(*) FROM t1 WHERE t1 MATCH '[select_term]';"
}
}
proc test_4 {nSelect} {
for {set i 0} {$i < $nSelect} {incr i} {
sql "SELECT count(*) FROM t1 WHERE t1 MATCH '[select_term] [select_term]';"
}
}
if {[llength $argv]!=0} usage
set ::vocab [build_vocab $::VOCAB_SIZE]
set ::fd [open fts3speed_insert.sql w]
test_1 $NUM_INSERTS
close $::fd
set ::fd [open fts3speed_select.sql w]
test_3 $NUM_SELECTS
close $::fd
set ::fd [open fts3speed_select2.sql w]
test_4 $NUM_SELECTS
close $::fd
set ::fd [open fts3speed_optimize.sql w]
test_2
close $::fd
puts "Success. Created files:"
puts " fts3speed_insert.sql"
puts " fts3speed_select.sql"
puts " fts3speed_select2.sql"
puts " fts3speed_optimize.sql"
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