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Diffstat (limited to 'test/memsubsys1.test')
| -rw-r--r-- | test/memsubsys1.test | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/test/memsubsys1.test b/test/memsubsys1.test new file mode 100644 index 0000000..fda35a9 --- /dev/null +++ b/test/memsubsys1.test @@ -0,0 +1,189 @@ +# 2008 June 18 +# +# 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 contains tests of the memory allocation subsystem +# + +set testdir [file dirname $argv0] +source $testdir/tester.tcl +sqlite3_reset_auto_extension + +# This test assumes that no page-cache buffers are installed +# by default when a new database connection is opened. As a result, it +# will not work with the "memsubsys1" permutation. +# +if {[permutation] == "memsubsys1"} { + finish_test + return +} + +test_set_config_pagecache 0 0 + +# This procedure constructs a new database in test.db. It fills +# this database with many small records (enough to force multiple +# rebalance operations in the btree-layer and to require a large +# page cache), verifies correct results, then returns. +# +proc build_test_db {testname pragmas} { + catch {db close} + forcedelete test.db test.db-journal + sqlite3 db test.db + sqlite3_db_config_lookaside db 0 0 0 + db eval $pragmas + db eval { + CREATE TABLE t1(x, y); + CREATE TABLE t2(a, b); + CREATE INDEX i1 ON t1(x,y); + INSERT INTO t1 VALUES(1, 100); + INSERT INTO t1 VALUES(2, 200); + } + for {set i 2} {$i<5000} {incr i $i} { + db eval {INSERT INTO t2 SELECT * FROM t1} + db eval {INSERT INTO t1 SELECT a+$i, a+b*100 FROM t2} + db eval {DELETE FROM t2} + } + do_test $testname.1 { + db eval {SELECT count(*) FROM t1} + } 8192 + integrity_check $testname.2 +} + +# Reset all of the highwater marks. +# +proc reset_highwater_marks {} { + sqlite3_status SQLITE_STATUS_MEMORY_USED 1 + sqlite3_status SQLITE_STATUS_MALLOC_SIZE 1 + sqlite3_status SQLITE_STATUS_PAGECACHE_USED 1 + sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 1 + sqlite3_status SQLITE_STATUS_PAGECACHE_SIZE 1 + sqlite3_status SQLITE_STATUS_SCRATCH_USED 1 + sqlite3_status SQLITE_STATUS_SCRATCH_OVERFLOW 1 + sqlite3_status SQLITE_STATUS_SCRATCH_SIZE 1 + sqlite3_status SQLITE_STATUS_PARSER_STACK 1 +} + +set xtra_size 290 + +# Test 1: Both PAGECACHE and SCRATCH are shut down. +# +db close +sqlite3_shutdown +sqlite3_config_lookaside 0 0 +sqlite3_config_pagecache 0 0 +sqlite3_initialize +reset_highwater_marks +build_test_db memsubsys1-1 {PRAGMA page_size=1024} +do_test memsubsys1-1.3 { + set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2] +} 0 +do_test memsubsys1-1.4 { + set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2] +} 0 +set max_pagecache [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2] +#show_memstats + +# Test 2: Activate PAGECACHE with 20 pages +# +db close +sqlite3_shutdown +sqlite3_config_pagecache [expr 1024+$xtra_size] 20 +sqlite3_initialize +reset_highwater_marks +build_test_db memsubsys1-2 {PRAGMA page_size=1024; PRAGMA mmap_size=0} +#show_memstats +set MEMORY_MANAGEMENT $sqlite_options(memorymanage) +ifcapable pagecache_overflow_stats { + ifcapable !malloc_usable_size { + do_test memsubsys1-2.3 { + set pg_ovfl [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2] + } [expr ($TEMP_STORE>1 || $MEMORY_MANAGEMENT==0)*1024] + } +} +do_test memsubsys1-2.4 { + set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2] +} 20 +do_test memsubsys1-2.5 { + set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2] +} 0 + +# Test 3: Activate PAGECACHE with 20 pages but use the wrong page size +# so that PAGECACHE is not used. +# +db close +sqlite3_shutdown +sqlite3_config_pagecache [expr 512+$xtra_size] 20 +sqlite3_config singlethread +sqlite3_initialize +reset_highwater_marks +build_test_db memsubsys1-3.1 {PRAGMA page_size=1024} +do_test memsubsys1-3.1.3 { + set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2] +} 0 +do_test memsubsys1-3.1.4 { + set overflow [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2] + # Note: The measured PAGECACHE_OVERFLOW is amount malloc() returns, not what + # was requested. System malloc() implementations might (arbitrarily) return + # slightly different oversize buffers, which can result in slightly different + # PAGECACHE_OVERFLOW sizes between consecutive runs. So we cannot do an + # exact comparison. Simply verify that the amount is within 5%. + expr {$overflow>=$max_pagecache*0.95 && $overflow<=$max_pagecache*1.05} +} 1 +do_test memsubsys1-3.1.5 { + set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2] +} 0 +db close +sqlite3_shutdown +sqlite3_config_pagecache [expr 2048+$xtra_size] 20 +sqlite3_initialize +reset_highwater_marks +build_test_db memsubsys1-3.2 {PRAGMA page_size=2048} +#show_memstats +do_test memsubsys1-3.2.3 { + db eval {PRAGMA page_size} +} 2048 +do_test memsubsys1-3.2.4 { + set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2] +} 20 +do_test memsubsys1-3.2.5 { + set s_used [lindex [sqlite3_status SQLITE_STATUS_SCRATCH_USED 0] 2] +} 0 + +# Test 4: Activate PAGECACHE +# +db close +sqlite3_shutdown +sqlite3_config_pagecache [expr 1024+$xtra_size] 50 +sqlite3_initialize +reset_highwater_marks +build_test_db memsubsys1-4 {PRAGMA page_size=1024} +#show_memstats +do_test memsubsys1-4.3 { + set pg_used [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 2] + expr {$pg_used>=45 && $pg_used<=50} +} 1 +do_test memsubsys1-4.4 { + set pg_ovfl [lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_OVERFLOW 0] 2] +} 0 +do_test memsubsys1-4.5 { + set maxreq [lindex [sqlite3_status SQLITE_STATUS_MALLOC_SIZE 0] 2] + expr {$maxreq<9000} +} 1 + +db close +sqlite3_shutdown +sqlite3_config_memstatus 1 +sqlite3_config_lookaside 100 500 +sqlite3_config serialized +sqlite3_initialize +autoinstall_test_functions + +test_restore_config_pagecache +finish_test |