/trunk/test/speed4p.test |
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# 2007 October 23 |
# |
# 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. More specifically, |
# the focus is on the speed of: |
# |
# * joins |
# * views |
# * sub-selects |
# * triggers |
# |
# $Id: speed4p.test,v 1.4 2008/04/10 13:32:37 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 $txt |
} |
|
# Summary of tests: |
# |
# speed4p-join1: Join three tables using IPK index. |
# speed4p-join2: Join three tables using an index. |
# speed4p-join3: Join two tables without an index. |
# |
# speed4p-view1: Querying a view. |
# speed4p-table1: Same queries as in speed4p-view1, but run directly against |
# the tables for comparison purposes. |
# |
# speed4p-subselect1: A SELECT statement that uses many sub-queries.. |
# |
# speed4p-trigger1: An INSERT statement that fires a trigger. |
# speed4p-trigger2: An UPDATE statement that fires a trigger. |
# speed4p-trigger3: A DELETE statement that fires a trigger. |
# speed4p-notrigger1: Same operation as trigger1, but without the trigger. |
# speed4p-notrigger2: " trigger2 " |
# speed4p-notrigger3: " trigger3 " |
# |
|
# Set up the schema. Each of the tables t1, t2 and t3 contain 50,000 rows. |
# This creates a database of around 16MB. |
execsql { |
PRAGMA page_size=1024; |
PRAGMA cache_size=8192; |
PRAGMA locking_mode=EXCLUSIVE; |
BEGIN; |
CREATE TABLE t1(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT); |
CREATE TABLE t2(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT); |
CREATE TABLE t3(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT); |
|
CREATE VIEW v1 AS SELECT rowid, i, t FROM t1; |
CREATE VIEW v2 AS SELECT rowid, i, t FROM t2; |
CREATE VIEW v3 AS SELECT rowid, i, t FROM t3; |
} |
for {set jj 1} {$jj <= 3} {incr jj} { |
set stmt [string map "%T% t$jj" {INSERT INTO %T% VALUES(NULL, $i, $t)}] |
for {set ii 0} {$ii < 50000} {incr ii} { |
set i [expr {int(rand()*50000)}] |
set t [number_name $i] |
execsql $stmt |
} |
} |
execsql { |
CREATE INDEX i1 ON t1(t); |
CREATE INDEX i2 ON t2(t); |
CREATE INDEX i3 ON t3(t); |
COMMIT; |
} |
|
# Join t1, t2, t3 on IPK. |
set sql "SELECT * FROM t1, t2, t3 WHERE t1.oid = t2.oid AND t2.oid = t3.oid" |
speed_trial speed4p-join1 50000 row $sql |
|
# Join t1, t2, t3 on the non-IPK index. |
set sql "SELECT * FROM t1, t2, t3 WHERE t1.t = t2.t AND t2.t = t3.t" |
speed_trial speed4p-join2 50000 row $sql |
|
# Run 10000 simple queries against the views. |
set script { |
for {set ii 1} {$ii < 10000} {incr ii} { |
set v [expr {$ii*3}] |
set t [expr {$ii%3+1}] |
db eval "SELECT * FROM v$t WHERE rowid = \$v" |
} |
} |
speed_trial_tcl speed4p-view1 10000 stmt $script |
|
# Run the same 10000 simple queries as in the previous test case against |
# the underlying tables. The compiled vdbe programs should be identical, so |
# the only difference in running time is the extra time taken to compile |
# the view definitions. |
# |
set script { |
for {set ii 1} {$ii < 10000} {incr ii} { |
set v [expr {$ii*3}] |
set t [expr {$ii%3+1}] |
db eval "SELECT t FROM t$t WHERE rowid = \$v" |
} |
} |
speed_trial_tcl speed4p-table1 10000 stmt $script |
|
# Run a SELECT that uses sub-queries 10000 times. A total of 30000 sub-selects. |
# |
set script { |
for {set ii 1} {$ii < 10000} {incr ii} { |
set v [expr {$ii*3}] |
db eval { |
SELECT (SELECT t FROM t1 WHERE rowid = $v), |
(SELECT t FROM t2 WHERE rowid = $v), |
(SELECT t FROM t3 WHERE rowid = $v) |
} |
} |
} |
speed_trial_tcl speed4p-subselect1 10000 stmt $script |
|
# Single-row updates performance. |
# |
set script { |
db eval BEGIN |
for {set ii 1} {$ii < 10000} {incr ii} { |
set v [expr {$ii*3}] |
db eval {UPDATE t1 SET i=i+1 WHERE rowid=$ii} |
} |
db eval COMMIT |
} |
speed_trial_tcl speed4p-rowid-update 10000 stmt $script |
|
|
db eval { |
CREATE TABLE t5(t TEXT PRIMARY KEY, i INTEGER); |
} |
speed_trial speed4p-insert-ignore 50000 row { |
INSERT OR IGNORE INTO t5 SELECT t, i FROM t1; |
} |
|
set list [db eval {SELECT t FROM t5}] |
set script { |
db eval BEGIN |
foreach t $::list { |
db eval {UPDATE t5 SET i=i+1 WHERE t=$t} |
} |
db eval COMMIT |
} |
speed_trial_tcl speed4p-unique-update [llength $list] stmt $script |
|
# The following block tests the speed of some DML statements that cause |
# triggers to fire. |
# |
execsql { |
CREATE TABLE log(op TEXT, r INTEGER, i INTEGER, t TEXT); |
CREATE TABLE t4(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT); |
CREATE TRIGGER t4_trigger1 AFTER INSERT ON t4 BEGIN |
INSERT INTO log VALUES('INSERT INTO t4', new.rowid, new.i, new.t); |
END; |
CREATE TRIGGER t4_trigger2 AFTER UPDATE ON t4 BEGIN |
INSERT INTO log VALUES('UPDATE OF t4', new.rowid, new.i, new.t); |
END; |
CREATE TRIGGER t4_trigger3 AFTER DELETE ON t4 BEGIN |
INSERT INTO log VALUES('DELETE OF t4', old.rowid, old.i, old.t); |
END; |
BEGIN; |
} |
set list {} |
for {set ii 1} {$ii < 10000} {incr ii} { |
lappend list $ii [number_name $ii] |
} |
set script { |
foreach {ii name} $::list { |
db eval {INSERT INTO t4 VALUES(NULL, $ii, $name)} |
} |
} |
speed_trial_tcl speed4p-trigger1 10000 stmt $script |
|
set list {} |
for {set ii 1} {$ii < 20000} {incr ii 2} { |
set ii2 [expr {$ii*2}] |
lappend list $ii $ii2 [number_name $ii2] |
} |
set script { |
foreach {ii ii2 name} $::list { |
db eval { |
UPDATE t4 SET i = $ii2, t = $name WHERE rowid = $ii; |
} |
} |
} |
speed_trial_tcl speed4p-trigger2 10000 stmt $script |
|
set script { |
for {set ii 1} {$ii < 20000} {incr ii 2} { |
db eval {DELETE FROM t4 WHERE rowid = $ii} |
} |
} |
speed_trial_tcl speed4p-trigger3 10000 stmt $script |
execsql {COMMIT} |
|
# The following block contains the same tests as the above block that |
# tests triggers, with one crucial difference: no triggers are defined. |
# So the difference in speed between these tests and the preceding ones |
# is the amount of time taken to compile and execute the trigger programs. |
# |
execsql { |
DROP TABLE t4; |
DROP TABLE log; |
VACUUM; |
CREATE TABLE t4(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT); |
BEGIN; |
} |
set list {} |
for {set ii 1} {$ii < 10000} {incr ii} { |
lappend list $ii [number_name $ii] |
} |
set script { |
foreach {ii name} $::list { |
db eval {INSERT INTO t4 VALUES(NULL, $ii, $name);} |
} |
} |
speed_trial_tcl speed4p-notrigger1 10000 stmt $script |
|
set list {} |
for {set ii 1} {$ii < 20000} {incr ii 2} { |
set ii2 [expr {$ii*2}] |
lappend list $ii $ii2 [number_name $ii2] |
} |
set script { |
foreach {ii ii2 name} $::list { |
db eval { |
UPDATE t4 SET i = $ii2, t = $name WHERE rowid = $ii; |
} |
} |
} |
speed_trial_tcl speed4p-notrigger2 10000 stmt $script |
|
set script { |
for {set ii 1} {$ii < 20000} {incr ii 2} { |
db eval {DELETE FROM t4 WHERE rowid = $ii} |
} |
} |
speed_trial_tcl speed4p-notrigger3 10000 stmt $script |
execsql {COMMIT} |
|
speed_trial_summary speed4 |
finish_test |