| # 2008 August 29 |
| # |
| # 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 is focused on testing the pcache module. |
| # |
| # $Id: pcache.test,v 1.5 2009/05/08 06:52:48 danielk1977 Exp $ |
| |
| set testdir [file dirname $argv0] |
| source $testdir/tester.tcl |
| |
| # Do not use a codec for tests in this file, as the database file is |
| # manipulated directly using tcl scripts (using the [hexio_write] command). |
| # |
| do_not_use_codec |
| |
| # Only works with a mode-2 pcache where all pcaches share a single set |
| # of pages. |
| # |
| ifcapable {!memorymanage && threadsafe} { |
| finish_test |
| return |
| } |
| |
| # The pcache module limits the number of pages available to purgeable |
| # caches to the sum of the 'cache_size' values for the set of open |
| # caches. This block of tests, pcache-1.*, test that the library behaves |
| # corrctly when it is forced to exceed this limit. |
| # |
| do_test pcache-1.1 { |
| db close |
| pcache_stats |
| } {current 0 max 0 min 0 recyclable 0} |
| |
| do_test pcache-1.2 { |
| sqlite3 db test.db |
| execsql { |
| PRAGMA cache_size=12; |
| PRAGMA auto_vacuum=0; |
| PRAGMA mmap_size=0; |
| } |
| pcache_stats |
| } {current 1 max 12 min 10 recyclable 1} |
| |
| do_test pcache-1.3 { |
| execsql { |
| BEGIN; |
| CREATE TABLE t1(a, b, c); |
| CREATE TABLE t2(a, b, c); |
| CREATE TABLE t3(a, b, c); |
| CREATE TABLE t4(a, b, c); |
| CREATE TABLE t5(a, b, c); |
| } |
| pcache_stats |
| } {current 6 max 12 min 10 recyclable 0} |
| |
| do_test pcache-1.4 { |
| execsql { |
| CREATE TABLE t6(a, b, c); |
| CREATE TABLE t7(a, b, c); |
| CREATE TABLE t8(a, b, c); |
| CREATE TABLE t9(a, b, c); |
| } |
| pcache_stats |
| } {current 10 max 12 min 10 recyclable 0} |
| |
| do_test pcache-1.5 { |
| sqlite3 db2 test.db |
| execsql "PRAGMA cache_size; PRAGMA cache_size=10" db2 |
| pcache_stats |
| } {current 11 max 22 min 20 recyclable 1} |
| |
| do_test pcache-1.6.1 { |
| execsql { |
| BEGIN; |
| SELECT * FROM sqlite_master; |
| } db2 |
| pcache_stats |
| } {current 11 max 22 min 20 recyclable 0} |
| |
| # At this point connection db2 has a read lock on the database file and a |
| # single pinned page in its cache. Connection [db] is holding 10 dirty |
| # pages. It cannot recycle them because of the read lock held by db2. |
| # |
| do_test pcache-1.6.2 { |
| execsql { |
| CREATE INDEX i1 ON t1(a, b); |
| CREATE INDEX i2 ON t2(a, b); |
| CREATE INDEX i3 ON t3(a, b); |
| CREATE INDEX i4 ON t4(a, b); |
| CREATE INDEX i5 ON t5(a, b); |
| CREATE INDEX i6 ON t6(a, b); |
| CREATE INDEX i7 ON t7(a, b); |
| CREATE INDEX i8 ON t8(a, b); |
| CREATE INDEX i9 ON t9(a, b); |
| CREATE INDEX i10 ON t9(a, b); |
| CREATE INDEX i11 ON t9(a, b); |
| } |
| pcache_stats |
| } {current 23 max 22 min 20 recyclable 0} |
| |
| do_test pcache-1.7 { |
| execsql { |
| CREATE TABLE t10(a, b, c); |
| } |
| pcache_stats |
| } {current 24 max 22 min 20 recyclable 0} |
| |
| # Rolling back the transaction held by db2 at this point releases a pinned |
| # page. Because the number of allocated pages is greater than the |
| # configured maximum, this page should be freed immediately instead of |
| # recycled. |
| # |
| do_test pcache-1.8 { |
| execsql {ROLLBACK} db2 |
| pcache_stats |
| } {current 23 max 22 min 20 recyclable 0} |
| |
| do_test pcache-1.9 { |
| execsql COMMIT |
| pcache_stats |
| } {current 22 max 22 min 20 recyclable 22} |
| |
| do_test pcache-1.10 { |
| db2 close |
| pcache_stats |
| } {current 12 max 12 min 10 recyclable 12} |
| |
| do_test pcache-1.11 { |
| execsql { PRAGMA cache_size = 20 } |
| pcache_stats |
| } {current 12 max 20 min 10 recyclable 12} |
| |
| do_test pcache-1.12 { |
| execsql { |
| SELECT * FROM t1 ORDER BY a; SELECT * FROM t1; |
| SELECT * FROM t2 ORDER BY a; SELECT * FROM t2; |
| SELECT * FROM t3 ORDER BY a; SELECT * FROM t3; |
| SELECT * FROM t4 ORDER BY a; SELECT * FROM t4; |
| SELECT * FROM t5 ORDER BY a; SELECT * FROM t5; |
| SELECT * FROM t6 ORDER BY a; SELECT * FROM t6; |
| SELECT * FROM t7 ORDER BY a; SELECT * FROM t7; |
| SELECT * FROM t8 ORDER BY a; SELECT * FROM t8; |
| SELECT * FROM t9 ORDER BY a; SELECT * FROM t9; |
| } |
| pcache_stats |
| } {current 19 max 20 min 10 recyclable 19} |
| |
| do_test pcache-1.13 { |
| execsql { PRAGMA cache_size = 15 } |
| pcache_stats |
| } {current 15 max 15 min 10 recyclable 15} |
| |
| do_test pcache-1.14 { |
| hexio_write test.db 24 [hexio_render_int32 1000] |
| execsql { SELECT * FROM sqlite_master } |
| pcache_stats |
| } {current 2 max 15 min 10 recyclable 2} |
| |
| do_test pcache-1.15 { |
| execsql { |
| SELECT * FROM t1 ORDER BY a; SELECT * FROM t1; |
| SELECT * FROM t2 ORDER BY a; SELECT * FROM t2; |
| SELECT * FROM t3 ORDER BY a; SELECT * FROM t3; |
| SELECT * FROM t4 ORDER BY a; SELECT * FROM t4; |
| SELECT * FROM t5 ORDER BY a; SELECT * FROM t5; |
| SELECT * FROM t6 ORDER BY a; SELECT * FROM t6; |
| SELECT * FROM t7 ORDER BY a; SELECT * FROM t7; |
| SELECT * FROM t8 ORDER BY a; SELECT * FROM t8; |
| SELECT * FROM t9 ORDER BY a; SELECT * FROM t9; |
| } |
| pcache_stats |
| } {current 14 max 15 min 10 recyclable 14} |
| |
| finish_test |