sl@0: # 2007 May 17
sl@0: #
sl@0: # The author disclaims copyright to this source code.  In place of
sl@0: # a legal notice, here is a blessing:
sl@0: #
sl@0: #    May you do good and not evil.
sl@0: #    May you find forgiveness for yourself and forgive others.
sl@0: #    May you share freely, never taking more than you give.
sl@0: #
sl@0: #*************************************************************************
sl@0: # This file implements regression tests for SQLite library. The 
sl@0: # focus of this script is testing that the overflow-page related
sl@0: # enhancements added after version 3.3.17 speed things up.
sl@0: #
sl@0: # $Id: speed3.test,v 1.5 2007/10/09 08:29:33 danielk1977 Exp $
sl@0: #
sl@0: 
sl@0: #---------------------------------------------------------------------
sl@0: # Test plan:
sl@0: #
sl@0: # If auto-vacuum is enabled for the database, the following cases
sl@0: # should show performance improvement with respect to 3.3.17.
sl@0: #
sl@0: #   + When deleting rows that span overflow pages. This is faster
sl@0: #     because the overflow pages no longer need to be read before
sl@0: #     they can be moved to the free list (test cases speed3-1.X). 
sl@0: #
sl@0: #   + When reading a column value stored on an overflow page that
sl@0: #     is not the first overflow page for the row. The improvement
sl@0: #     in this case is because the overflow pages between the tree
sl@0: #     page and the overflow page containing the value do not have
sl@0: #     to be read (test cases speed3-2.X).
sl@0: #
sl@0: 
sl@0: set testdir [file dirname $argv0]
sl@0: source $testdir/tester.tcl
sl@0: 
sl@0: ifcapable !tclvar||!attach {
sl@0:   finish_test
sl@0:   return
sl@0: }
sl@0: 
sl@0: speed_trial_init speed1
sl@0: 
sl@0: # Set a uniform random seed
sl@0: expr srand(0)
sl@0: 
sl@0: set ::NROW 1000
sl@0: 
sl@0: # The number_name procedure below converts its argment (an integer)
sl@0: # into a string which is the English-language name for that number.
sl@0: #
sl@0: # Example:
sl@0: #
sl@0: #     puts [number_name 123]   ->  "one hundred twenty three"
sl@0: #
sl@0: set ones {zero one two three four five six seven eight nine
sl@0:           ten eleven twelve thirteen fourteen fifteen sixteen seventeen
sl@0:           eighteen nineteen}
sl@0: set tens {{} ten twenty thirty forty fifty sixty seventy eighty ninety}
sl@0: proc number_name {n} {
sl@0:   if {$n>=1000} {
sl@0:     set txt "[number_name [expr {$n/1000}]] thousand"
sl@0:     set n [expr {$n%1000}]
sl@0:   } else {
sl@0:     set txt {}
sl@0:   }
sl@0:   if {$n>=100} {
sl@0:     append txt " [lindex $::ones [expr {$n/100}]] hundred"
sl@0:     set n [expr {$n%100}]
sl@0:   }
sl@0:   if {$n>=20} {
sl@0:     append txt " [lindex $::tens [expr {$n/10}]]"
sl@0:     set n [expr {$n%10}]
sl@0:   }
sl@0:   if {$n>0} {
sl@0:     append txt " [lindex $::ones $n]"
sl@0:   }
sl@0:   set txt [string trim $txt]
sl@0:   if {$txt==""} {set txt zero}
sl@0:   return $txt
sl@0: }
sl@0: 
sl@0: proc populate_t1 {db} {
sl@0:   $db transaction {
sl@0:     for {set ii 0} {$ii < $::NROW} {incr ii} {
sl@0:       set N [number_name $ii]
sl@0:       set repeats [expr {(10000/[string length $N])+1}]
sl@0:       set text [string range [string repeat $N $repeats] 0 10000]
sl@0:       $db eval {INSERT INTO main.t1 VALUES($ii, $text, $ii)}
sl@0:     }
sl@0:     $db eval {INSERT INTO aux.t1 SELECT * FROM main.t1}
sl@0:   }
sl@0: }
sl@0: 
sl@0: 
sl@0: proc io_log {db} {
sl@0:   db_enter db
sl@0:   array set stats1 [btree_pager_stats [btree_from_db db]]
sl@0:   array set stats2 [btree_pager_stats [btree_from_db db 2]]
sl@0:   db_leave db
sl@0: # puts "1: [array get stats1]"
sl@0: # puts "2: [array get stats2]"
sl@0:   puts "Incrvacuum: Read $stats1(read), wrote $stats1(write)"
sl@0:   puts "Normal    : Read $stats2(read), wrote $stats2(write)"
sl@0: }
sl@0: 
sl@0: proc overflow_report {db} {
sl@0:   set bt [btree_from_db db]
sl@0:   set csr [btree_cursor $bt 3 0]
sl@0: 
sl@0:   for {btree_first $csr} {![btree_eof $csr]} {btree_next $csr} {
sl@0:     puts "[btree_ovfl_info $bt $csr]"
sl@0:   }
sl@0: 
sl@0:   btree_close_cursor $csr
sl@0:   
sl@0: }
sl@0: 
sl@0: proc reset_db {} {
sl@0:   db close
sl@0:   sqlite3 db test.db
sl@0:   db eval { 
sl@0:     PRAGMA main.cache_size = 200000;
sl@0:     PRAGMA main.auto_vacuum = 'incremental';
sl@0:     ATTACH 'test2.db' AS 'aux'; 
sl@0:     PRAGMA aux.auto_vacuum = 'none';
sl@0:   }
sl@0: }
sl@0: 
sl@0: file delete -force test2.db test2.db-journal
sl@0: reset_db
sl@0: 
sl@0: # Set up a database in auto-vacuum mode and create a database schema.
sl@0: #
sl@0: do_test speed3-0.1 {
sl@0:   execsql {
sl@0:     CREATE TABLE main.t1(a INTEGER, b TEXT, c INTEGER);
sl@0:   }
sl@0:   execsql {
sl@0:     SELECT name FROM sqlite_master ORDER BY 1;
sl@0:   }
sl@0: } {t1}
sl@0: do_test speed3-0.2 {
sl@0:   execsql {
sl@0:     CREATE TABLE aux.t1(a INTEGER, b TEXT, c INTEGER);
sl@0:   }
sl@0:   execsql {
sl@0:     SELECT name FROM aux.sqlite_master ORDER BY 1;
sl@0:   }
sl@0: } {t1}
sl@0: do_test speed3-0.3 {
sl@0:   populate_t1 db
sl@0:   execsql {
sl@0:     SELECT count(*) FROM main.t1;
sl@0:     SELECT count(*) FROM aux.t1;
sl@0:   }
sl@0: } "$::NROW $::NROW"
sl@0: do_test speed3-0.4 {
sl@0:   execsql {
sl@0:     PRAGMA main.auto_vacuum;
sl@0:     PRAGMA aux.auto_vacuum;
sl@0:   }
sl@0: } {2 0}
sl@0: 
sl@0: # Delete all content in a table, one row at a time.
sl@0: #
sl@0: #io_log db
sl@0: #overflow_report db
sl@0: reset_db
sl@0: speed_trial speed3-1.incrvacuum $::NROW row {DELETE FROM main.t1 WHERE 1}
sl@0: speed_trial speed3-1.normal     $::NROW row {DELETE FROM aux.t1 WHERE 1}
sl@0: io_log db
sl@0: 
sl@0: # Select the "C" column (located at the far end of the overflow 
sl@0: # chain) from each table row.
sl@0: #
sl@0: #db eval {PRAGMA incremental_vacuum(500000)}
sl@0: populate_t1 db
sl@0: #overflow_report db
sl@0: reset_db
sl@0: speed_trial speed3-2.incrvacuum $::NROW row {SELECT c FROM main.t1}
sl@0: speed_trial speed3-2.normal     $::NROW row {SELECT c FROM aux.t1}
sl@0: io_log db
sl@0: 
sl@0: finish_test