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Fix #1419

This commit is contained in:
garnier-quentin 2019-03-18 16:45:08 +01:00
parent f01d7c41fd
commit 3ffd99ba8c
1 changed files with 12 additions and 13 deletions
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25
database/oracle/mode/datacachehitratio.pm
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@ -29,11 +29,12 @@ use Digest::MD5 qw(md5_hex);
sub custom_hitratio_calc {
my ($self, %options) = @_;
my $delta_read = ($options{new_datas}->{$self->{instance} . '_physical_reads'} - $options{old_datas}->{$self->{instance} . '_physical_reads'}) -
($options{new_datas}->{$self->{instance} . '_physical_reads_direct'} - $options{old_datas}->{$self->{instance} . '_physical_reads_direct'}) -
($options{new_datas}->{$self->{instance} . '_physical_reads_direct_lob'} - $options{old_datas}->{$self->{instance} . '_physical_reads_direct_lob'});
my $delta_slr = $options{new_datas}->{$self->{instance} . '_session_logical_reads'} - $options{old_datas}->{$self->{instance} . '_session_logical_reads'};
$self->{result_values}->{hit_ratio} = ($delta_slr == 0) ? 0 : (100 - 100 * $delta_read / $delta_slr);
my $delta_phys = ($options{new_datas}->{$self->{instance} . '_physical_reads'} - $options{old_datas}->{$self->{instance} . '_physical_reads'});
my $delta_cache =
($options{new_datas}->{$self->{instance} . '_db_block_gets'} - $options{old_datas}->{$self->{instance} . '_db_block_gets'}) +
($options{new_datas}->{$self->{instance} . '_consistent_gets'} - $options{old_datas}->{$self->{instance} . '_consistent_gets'});
$self->{result_values}->{hit_ratio} = ($delta_cache == 0) ? 0 :
((1 - ($delta_phys / $delta_cache)) * 100);
return 0;
}
@ -47,8 +48,8 @@ sub set_counters {
$self->{maps_counters}->{global} = [
{ label => 'usage', set => {
key_values => [ { name => 'physical_reads', diff => 1 }, { name => 'physical_reads_direct', diff => 1 },
{ name => 'physical_reads_direct_lob', diff => 1 }, { name => 'session_logical_reads', diff => 1 } ],
key_values => [ { name => 'physical_reads', diff => 1 }, { name => 'db_block_gets', diff => 1 },
{ name => 'consistent_gets', diff => 1 } ],
closure_custom_calc => $self->can('custom_hitratio_calc'),
output_template => 'Buffer cache hit ratio is %.2f%%', output_error_template => 'Buffer cache hit ratio: %s',
output_use => 'hit_ratio', threshold_use => 'hit_ratio',
@ -77,9 +78,8 @@ sub manage_selection {
my $query = q{
SELECT SUM(DECODE(name, 'physical reads', value, 0)),
SUM(DECODE(name, 'physical reads direct', value, 0)),
SUM(DECODE(name, 'physical reads direct (lob)', value, 0)),
SUM(DECODE(name, 'session logical reads', value, 0))
SUM(DECODE(name, 'db block gets', value, 0)),
SUM(DECODE(name, 'consistent gets', value, 0)),
FROM sys.v_$sysstat
};
@ -89,9 +89,8 @@ sub manage_selection {
$self->{global} = {
physical_reads => $result[0],
physical_reads_direct => $result[1],
physical_reads_direct_lob => $result[2],
session_logical_reads => $result[3]
db_block_gets => $result[1],
consistent_gets => $result[2],
};
$self->{cache_name} = "oracle_" . $self->{mode} . '_' . $options{sql}->get_unique_id4save() . '_' .