031c3e6d95
* We meant well but it turns out that the array unnest and join is actually very slow, as the join arguments do not get pushed down into the CTE (in Postgres 9/10 at least, later versions remove some of the optimization barriers in that specifc type of query) * This caused a seq scan on both device and device_port, and the query is executed many times during macsuck * The query is now rewritten to use ANY (macaddr[]) and without CTE, which seems to be around 20x faster
26 lines
595 B
Perl
26 lines
595 B
Perl
use utf8;
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package App::Netdisco::DB::Result::Virtual::PortMacs;
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use strict;
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use warnings;
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use base 'DBIx::Class::Core';
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__PACKAGE__->table_class('DBIx::Class::ResultSource::View');
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__PACKAGE__->table("port_macs");
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__PACKAGE__->result_source_instance->is_virtual(1);
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__PACKAGE__->result_source_instance->view_definition(<<ENDSQL
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SELECT ip, mac FROM device where mac = any (?::macaddr[])
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UNION
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SELECT ip, mac FROM device_port dp where mac = any (?::macaddr[])
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ENDSQL
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);
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__PACKAGE__->add_columns(
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'mac' => { data_type => 'macaddr' },
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'ip' => { data_type => 'inet' },
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);
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1;
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