58 lines
1.5 KiB
Plaintext
58 lines
1.5 KiB
Plaintext
# 2014 November 26
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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set testprefix bigsort
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#--------------------------------------------------------------------
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# At one point there was an overflow problem if the product of the
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# cache-size and page-size was larger than 2^31. Causing an infinite
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# loop if the product was also an integer multiple of 2^32, or
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# inefficiency otherwise.
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#
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# This test causes thrashing on machines with smaller amounts of
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# memory. Make sure the host has at least 8GB available before running
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# this test.
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#
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# Update: https://sqlite.org/src/info/7c96a56 adds assert() statements
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# that make this test too slow to run with SQLITE_DEBUG builds.
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#
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if {[catch {exec free | grep Mem:} out] || [lindex $out 1]<8000000} {
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finish_test
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return
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}
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ifcapable debug {
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finish_test
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return
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}
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do_execsql_test 1.0 {
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PRAGMA page_size = 1024;
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CREATE TABLE t1(a, b);
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BEGIN;
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WITH data(x,y) AS (
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SELECT 1, zeroblob(10000)
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UNION ALL
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SELECT x+1, y FROM data WHERE x < 300000
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)
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INSERT INTO t1 SELECT * FROM data;
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COMMIT;
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}
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do_execsql_test 1.1 {
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PRAGMA cache_size = 4194304;
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CREATE INDEX i1 ON t1(a, b);
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}
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finish_test
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