Index: third_party/sqlite/sqlite-src-3080704/test/speed1p.explain |
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+# 2008 March 21 |
+# |
+# The author disclaims copyright to this source code. In place of |
+# a legal notice, here is a blessing: |
+# |
+# May you do good and not evil. |
+# May you find forgiveness for yourself and forgive others. |
+# May you share freely, never taking more than you give. |
+# |
+#************************************************************************* |
+# This file implements regression tests for SQLite library. The |
+# focus of this script is measuring executing speed. |
+# |
+# This is a copy of speed1.test modified to user prepared statements. |
+# |
+# $Id: speed1p.explain,v 1.1 2008/04/16 12:57:48 drh Exp $ |
+# |
+ |
+set testdir [file dirname $argv0] |
+source $testdir/tester.tcl |
+speed_trial_init speed1 |
+ |
+# Set a uniform random seed |
+expr srand(0) |
+ |
+set sqlout [open speed1.txt w] |
+proc tracesql {sql} { |
+ puts $::sqlout $sql\; |
+} |
+#db trace tracesql |
+ |
+# The number_name procedure below converts its argment (an integer) |
+# into a string which is the English-language name for that number. |
+# |
+# Example: |
+# |
+# puts [number_name 123] -> "one hundred twenty three" |
+# |
+set ones {zero one two three four five six seven eight nine |
+ ten eleven twelve thirteen fourteen fifteen sixteen seventeen |
+ eighteen nineteen} |
+set tens {{} ten twenty thirty forty fifty sixty seventy eighty ninety} |
+proc number_name {n} { |
+ if {$n>=1000} { |
+ set txt "[number_name [expr {$n/1000}]] thousand" |
+ set n [expr {$n%1000}] |
+ } else { |
+ set txt {} |
+ } |
+ if {$n>=100} { |
+ append txt " [lindex $::ones [expr {$n/100}]] hundred" |
+ set n [expr {$n%100}] |
+ } |
+ if {$n>=20} { |
+ append txt " [lindex $::tens [expr {$n/10}]]" |
+ set n [expr {$n%10}] |
+ } |
+ if {$n>0} { |
+ append txt " [lindex $::ones $n]" |
+ } |
+ set txt [string trim $txt] |
+ if {$txt==""} {set txt zero} |
+ return $txt |
+} |
+ |
+# Create a database schema. |
+# |
+do_test speed1p-1.0 { |
+ execsql { |
+ PRAGMA page_size=1024; |
+ PRAGMA cache_size=8192; |
+ PRAGMA locking_mode=EXCLUSIVE; |
+ CREATE TABLE t1(a INTEGER, b INTEGER, c TEXT); |
+ CREATE TABLE t2(a INTEGER, b INTEGER, c TEXT); |
+ CREATE INDEX i2a ON t2(a); |
+ CREATE INDEX i2b ON t2(b); |
+ } |
+ execsql { |
+ SELECT name FROM sqlite_master ORDER BY 1; |
+ } |
+} {i2a i2b t1 t2} |
+ |
+ |
+# 50000 INSERTs on an unindexed table |
+# |
+set list {} |
+for {set i 1} {$i<=50000} {incr i} { |
+ set r [expr {int(rand()*500000)}] |
+ set x [number_name $r] |
+ lappend list $i $r $x |
+} |
+set script { |
+ foreach {i r x} $::list { |
+ db eval {INSERT INTO t1 VALUES($i,$r,$x)} |
+ } |
+} |
+explain {INSERT INTO t1 VALUES($i,$r,$x)} |
+db eval BEGIN |
+speed_trial_tcl speed1p-insert1 50000 row $script |
+db eval COMMIT |
+ |
+# 50000 INSERTs on an indexed table |
+# |
+set list {} |
+for {set i 1} {$i<=50000} {incr i} { |
+ set r [expr {int(rand()*500000)}] |
+ set x [number_name $r] |
+ lappend list $i $r $x |
+} |
+set script { |
+ foreach {i r x} $::list { |
+ db eval {INSERT INTO t2 VALUES($i,$r,$x)} |
+ } |
+} |
+explain {INSERT INTO t2 VALUES($i,$r,$x)} |
+db eval BEGIN |
+speed_trial_tcl speed1p-insert2 50000 row $script |
+db eval COMMIT |
+ |
+ |
+ |
+# 50 SELECTs on an integer comparison. There is no index so |
+# a full table scan is required. |
+# |
+set list {} |
+for {set i 0} {$i<50} {incr i} { |
+ set lwr [expr {$i*100}] |
+ set upr [expr {($i+10)*100}] |
+ lappend list $lwr $upr |
+} |
+set script { |
+ foreach {lwr upr} $::list { |
+ db eval {SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr} |
+ } |
+} |
+explain {SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr} |
+db eval BEGIN |
+speed_trial_tcl speed1p-select1 [expr {50*50000}] row $script |
+db eval COMMIT |
+ |
+# 50 SELECTs on an LIKE comparison. There is no index so a full |
+# table scan is required. |
+# |
+set list {} |
+for {set i 0} {$i<50} {incr i} { |
+ lappend list "%[number_name $i]%" |
+} |
+set script { |
+ foreach pattern $::list { |
+ db eval {SELECT count(*), avg(b) FROM t1 WHERE c LIKE $pattern} |
+ } |
+} |
+explain {SELECT count(*), avg(b) FROM t1 WHERE c LIKE $pattern} |
+db eval BEGIN |
+speed_trial_tcl speed1p-select2 [expr {50*50000}] row $script |
+db eval COMMIT |
+ |
+# Create indices |
+# |
+explain {CREATE INDEX i1a ON t1(a)} |
+explain {CREATE INDEX i1b ON t1(b)} |
+db eval BEGIN |
+speed_trial speed1p-createidx 150000 row { |
+ CREATE INDEX i1a ON t1(a); |
+ CREATE INDEX i1b ON t1(b); |
+ CREATE INDEX i1c ON t1(c); |
+} |
+db eval COMMIT |
+ |
+# 5000 SELECTs on an integer comparison where the integer is |
+# indexed. |
+# |
+set list {} |
+for {set i 0} {$i<5000} {incr i} { |
+ set lwr [expr {$i*100}] |
+ set upr [expr {($i+10)*100}] |
+ lappend list $lwr $upr |
+} |
+set script { |
+ foreach {lwr upr} $::list { |
+ db eval {SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr} |
+ } |
+} |
+explain {SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr} |
+db eval BEGIN |
+speed_trial_tcl speed1p-select3 5000 stmt $script |
+db eval COMMIT |
+ |
+# 100000 random SELECTs against rowid. |
+# |
+set list {} |
+for {set i 1} {$i<=100000} {incr i} { |
+ set id [expr {int(rand()*50000)+1}] |
+ lappend list $id |
+} |
+set script { |
+ foreach id $::list { |
+ db eval {SELECT c FROM t1 WHERE rowid=$id} |
+ } |
+} |
+explain {SELECT c FROM t1 WHERE rowid=$id} |
+db eval BEGIN |
+speed_trial_tcl speed1p-select4 100000 row $script |
+db eval COMMIT |
+ |
+# 100000 random SELECTs against a unique indexed column. |
+# |
+set list {} |
+for {set i 1} {$i<=100000} {incr i} { |
+ set id [expr {int(rand()*50000)+1}] |
+ lappend list $id |
+} |
+set script { |
+ foreach id $::list { |
+ db eval {SELECT c FROM t1 WHERE a=$id} |
+ } |
+} |
+explain {SELECT c FROM t1 WHERE a=$id} |
+db eval BEGIN |
+speed_trial_tcl speed1p-select5 100000 row $script |
+db eval COMMIT |
+ |
+# 50000 random SELECTs against an indexed column text column |
+# |
+set list [db eval {SELECT c FROM t1 ORDER BY random() LIMIT 50000}] |
+set script { |
+ foreach c $::list { |
+ db eval {SELECT c FROM t1 WHERE c=$c} |
+ } |
+} |
+explain {SELECT c FROM t1 WHERE c=$c} |
+db eval BEGIN |
+speed_trial_tcl speed1p-select6 50000 row $script |
+db eval COMMIT |
+ |
+ |
+# Vacuum |
+speed_trial speed1p-vacuum 100000 row VACUUM |
+ |
+# 5000 updates of ranges where the field being compared is indexed. |
+# |
+set list {} |
+for {set i 0} {$i<5000} {incr i} { |
+ set lwr [expr {$i*2}] |
+ set upr [expr {($i+1)*2}] |
+ lappend list $lwr $upr |
+} |
+set script { |
+ foreach {lwr upr} $::list { |
+ db eval {UPDATE t1 SET b=b*2 WHERE a>=$lwr AND a<$upr} |
+ } |
+} |
+explain {UPDATE t1 SET b=b*2 WHERE a>=$lwr AND a<$upr} |
+db eval BEGIN |
+speed_trial_tcl speed1p-update1 5000 stmt $script |
+db eval COMMIT |
+ |
+# 50000 single-row updates. An index is used to find the row quickly. |
+# |
+set list {} |
+for {set i 0} {$i<50000} {incr i} { |
+ set r [expr {int(rand()*500000)}] |
+ lappend list $i $r |
+} |
+set script { |
+ foreach {i r} $::list { |
+ db eval {UPDATE t1 SET b=$r WHERE a=$i} |
+ } |
+} |
+explain {UPDATE t1 SET b=$r WHERE a=$i} |
+db eval BEGIN |
+speed_trial_tcl speed1p-update2 50000 row $script |
+db eval COMMIT |
+ |
+# 1 big text update that touches every row in the table. |
+# |
+explain {UPDATE t1 SET c=a} |
+speed_trial speed1p-update3 50000 row { |
+ UPDATE t1 SET c=a; |
+} |
+ |
+# Many individual text updates. Each row in the table is |
+# touched through an index. |
+# |
+set list {} |
+for {set i 1} {$i<=50000} {incr i} { |
+ set r [expr {int(rand()*500000)}] |
+ lappend list $i [number_name $r] |
+} |
+set script { |
+ foreach {i x} $::list { |
+ db eval {UPDATE t1 SET c=$x WHERE a=$i} |
+ } |
+} |
+explain {UPDATE t1 SET c=$x WHERE a=$i} |
+db eval BEGIN |
+speed_trial_tcl speed1p-update4 50000 row $script |
+db eval COMMIT |
+ |
+# Delete all content in a table. |
+# |
+explain {DELETE FROM t1} |
+speed_trial speed1p-delete1 50000 row {DELETE FROM t1} |
+ |
+# Copy one table into another |
+# |
+explain {INSERT INTO t1 SELECT * FROM t2} |
+speed_trial speed1p-copy1 50000 row {INSERT INTO t1 SELECT * FROM t2} |
+ |
+# Delete all content in a table, one row at a time. |
+# |
+explain {DELETE FROM t1 WHERE 1} |
+speed_trial speed1p-delete2 50000 row {DELETE FROM t1 WHERE 1} |
+ |
+# Refill the table yet again |
+# |
+speed_trial speed1p-copy2 50000 row {INSERT INTO t1 SELECT * FROM t2} |
+ |
+# Drop the table and recreate it without its indices. |
+# |
+explain {DROP TABLE t1} |
+explain {CREATE TABLE tX(a INTEGER, b INTEGER, c TEXT)} |
+db eval BEGIN |
+speed_trial speed1p-drop1 50000 row { |
+ DROP TABLE t1; |
+ CREATE TABLE t1(a INTEGER, b INTEGER, c TEXT); |
+} |
+db eval COMMIT |
+ |
+# Refill the table yet again. This copy should be faster because |
+# there are no indices to deal with. |
+# |
+speed_trial speed1p-copy3 50000 row {INSERT INTO t1 SELECT * FROM t2} |
+ |
+# Select 20000 rows from the table at random. |
+# |
+explain {SELECT rowid FROM t1 ORDER BY random() LIMIT 20000} |
+speed_trial speed1p-random1 50000 row { |
+ SELECT rowid FROM t1 ORDER BY random() LIMIT 20000 |
+} |
+ |
+# Delete 20000 random rows from the table. |
+# |
+explain {DELETE FROM t1 WHERE rowid IN |
+ (SELECT rowid FROM t1 ORDER BY random() LIMIT 20000)} |
+speed_trial speed1p-random-del1 20000 row { |
+ DELETE FROM t1 WHERE rowid IN |
+ (SELECT rowid FROM t1 ORDER BY random() LIMIT 20000) |
+} |
+do_test speed1p-1.1 { |
+ db one {SELECT count(*) FROM t1} |
+} 30000 |
+ |
+ |
+# Delete 20000 more rows at random from the table. |
+# |
+speed_trial speed1p-random-del2 20000 row { |
+ DELETE FROM t1 WHERE rowid IN |
+ (SELECT rowid FROM t1 ORDER BY random() LIMIT 20000) |
+} |
+do_test speed1p-1.2 { |
+ db one {SELECT count(*) FROM t1} |
+} 10000 |
+speed_trial_summary speed1 |
+ |
+finish_test |