mirror of
https://github.com/pgvector/pgvector.git
synced 2026-06-06 05:51:21 +08:00
69 lines
2.0 KiB
Perl
69 lines
2.0 KiB
Perl
use strict;
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use warnings FATAL => 'all';
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use PostgreSQL::Test::Cluster;
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use PostgreSQL::Test::Utils;
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use Test::More;
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my $dim = 3;
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my $array_sql = join(",", ('random()') x $dim);
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# Initialize node
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my $node = PostgreSQL::Test::Cluster->new('node');
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$node->init;
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$node->start;
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# Create table
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$node->safe_psql("postgres", "CREATE EXTENSION vector;");
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$node->safe_psql("postgres", "CREATE TABLE tst (i int4 PRIMARY KEY, v vector($dim));");
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$node->safe_psql("postgres",
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"INSERT INTO tst SELECT i, ARRAY[$array_sql] FROM generate_series(1, 100000) i;"
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);
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$node->safe_psql("postgres", qq(
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SET maintenance_work_mem = '128MB';
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SET max_parallel_maintenance_workers = 2;
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CREATE INDEX ON tst USING hnsw (v vector_l2_ops)
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));
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my $count = $node->safe_psql("postgres", qq(
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SET enable_seqscan = off;
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SET hnsw.iterative_scan = relaxed_order;
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SET hnsw.max_scan_tuples = 100000;
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SET hnsw.scan_mem_multiplier = 2;
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SELECT COUNT(*) FROM (SELECT v FROM tst WHERE i % 10000 = 0 ORDER BY v <-> (SELECT v FROM tst LIMIT 1) LIMIT 11) t;
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));
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is($count, 10);
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foreach ((30000, 50000, 70000))
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{
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my $max_tuples = $_;
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my $expected = $max_tuples / 10000;
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my $sum = 0;
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for my $i (1 .. 20)
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{
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$count = $node->safe_psql("postgres", qq(
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SET enable_seqscan = off;
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SET hnsw.iterative_scan = relaxed_order;
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SET hnsw.max_scan_tuples = $max_tuples;
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SET hnsw.scan_mem_multiplier = 2;
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SELECT COUNT(*) FROM (SELECT v FROM tst WHERE i % 10000 = 0 ORDER BY v <-> (SELECT v FROM tst WHERE i = $i) LIMIT 11) t;
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));
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$sum += $count;
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}
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my $avg = $sum / 20;
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cmp_ok($avg, '>', $expected - 2);
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cmp_ok($avg, '<', $expected + 2);
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}
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my ($ret, $stdout, $stderr) = $node->psql("postgres", qq(
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SET enable_seqscan = off;
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SET hnsw.iterative_scan = relaxed_order;
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SET client_min_messages = debug1;
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SET work_mem = '1MB';
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SELECT COUNT(*) FROM (SELECT v FROM tst WHERE i % 10000 = 0 ORDER BY v <-> (SELECT v FROM tst LIMIT 1) LIMIT 11) t;
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));
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like($stderr, qr/hnsw index scan reached memory limit after \d+ tuples/);
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done_testing();
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