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pgsize.php
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<html>
<head>
<?php
print sprintf("<title>%s</title>", isset($_GET['q'])?htmlspecialchars($_GET['q']):'pgsize');
?>
<style type="text/css">
body {
font-family: monospace;
}
div.menu {
background-color: darkgray;
}
table > thead {
background-color: lightgray;
}
</style>
</head>
<body>
<?php
define('PG_PAGE_SIZE', 8 * 1024);
include("../WHAT/Lib.Common.php");
$pgservice_core = getServiceCore();
$conn = pg_connect("service='$pgservice_core'");
if( $conn === false ) {
print sprintf("Error: could not connect to pg service '%s'", $pgservice_core);
exit(1);
}
$query = array();
$query['pg_settings'] = sprintf("SELECT name, setting, context, short_desc FROM pg_settings");
$query['pg_stat_activity'] = sprintf("SELECT datname, procpid, client_addr, client_port, waiting, query_start, now() - query_start AS time, current_query FROM pg_stat_activity WHERE procpid != pg_backend_pid()");
$query['tables'] = sprintf("SELECT s.schemaname, s.relname, c.oid, c.relfilenode, s.seq_scan, s.idx_scan, c.reltuples, c.relpages as pages FROM pg_stat_all_tables as s, pg_class as c WHERE s.relname = c.relname AND s.schemaname IN (SELECT nspname FROM pg_namespace WHERE oid = c.relnamespace) AND ( s.schemaname = 'public' OR s.schemaname = 'pg_toast' )");
$query['tables I/O'] = sprintf("SELECT schemaname, relname, heap_blks_read, heap_blks_hit, idx_blks_read, idx_blks_hit, toast_blks_read, toast_blks_hit, tidx_blks_read, tidx_blks_hit FROM pg_statio_all_tables WHERE schemaname IN ('public', 'pg_toast')");
$query['indexes'] = sprintf("SELECT s.schemaname, s.relname, s.indexrelname, c.oid, c.relfilenode, s.idx_scan, s.idx_tup_read, s.idx_tup_fetch, c.reltuples, c.relpages as pages FROM pg_stat_all_indexes as s, pg_class as c WHERE s.indexrelname = c.relname AND s.schemaname IN (SELECT nspname FROM pg_namespace WHERE oid = c.relnamespace) AND ( s.schemaname = 'public' OR s.schemaname = 'pg_toast' )");
$query['indexes I/O'] = sprintf("SELECT schemaname, relname, indexrelname, idx_blks_read, idx_blks_hit FROM pg_statio_all_indexes WHERE schemaname IN ('public', 'pg_toast')");
$query['vacuums'] = sprintf("SELECT s.schemaname, s.relname, c.reltuples, s.n_tup_ins, s.n_tup_upd, s.n_tup_del, s.n_tup_hot_upd, s.n_live_tup, s.n_dead_tup, s.last_vacuum, s.last_autovacuum FROM pg_stat_all_tables as s, pg_class as c WHERE s.relname = c.relname AND s.schemaname IN (SELECT nspname FROM pg_namespace WHERE oid = c.relnamespace) AND ( s.schemaname = 'public' OR s.schemaname = 'pg_toast' )");
$query['pg_buffercache'] = sprintf("SELECT c.relname, count(*) AS pages FROM pg_buffercache b INNER JOIN pg_class c ON b.relfilenode = c.relfilenode AND b.reldatabase IN (0, (SELECT oid FROM pg_database WHERE datname = current_database())) GROUP BY c.relname");
$parms = array();
$parms['q'] = $_GET['q'];
$parms['orderby'] = $_GET['orderby'];
$parms['desc'] = $_GET['desc'];
if( ! isset($query[$parms['q']]) ) {
$parms['q'] = key($query);
}
if( $parms['desc'] != 'desc' && $parms['desc'] != 'asc' ) {
$parms['desc'] = 'desc';
}
$menu = array();
foreach( $query as $k => $v ) {
$menu [] = '<a href="?q='.htmlspecialchars($k).'">'.htmlspecialchars($k).'</a>';
}
print '<div class="menu"> '.join(' | ', $menu).' </div>';
show_query($conn, $query[$parms['q']], $parms);
function show_query(&$conn, &$query, &$parms) {
$q = $parms['q'];
$orderby = $parms['orderby'];
$desc = $parms['desc'];
$add = '';
if( $orderby != '' ) {
$add = sprintf('ORDER BY "%s"', pg_escape_string($orderby));
if( $desc != '' ) {
$add = sprintf('%s %s', $add, pg_escape_string($desc));
}
}
$res = pg_prepare($conn, 'select', sprintf("%s %s", $query, pg_escape_string($add)));
if( $res !== false ) {
$res = pg_execute($conn, 'select', array());
}
if( $res === false ) {
print '<div class="error">';
print htmlspecialchars(pg_last_error($conn));
print '</div>';
return false;
}
$col_num = pg_num_fields($res);
$line_num = pg_num_rows($res);
$fields = array();
for( $i = 0; $i < $col_num; $i++ ) {
$fields[$i] = pg_field_name($res, $i);
}
$desc = ($desc == 'desc') ? 'asc' : 'desc';
print '<div class="table">';
print '<table>';
print '<thead>';
foreach( $fields as $i => $name ) {
print '<td><a href="?q='.htmlspecialchars($q).'&orderby='.htmlspecialchars($name).'&desc='.htmlspecialchars($desc).'">'.htmlspecialchars($name).'</a></td>';
}
print '</thead>';
print '<tbody>';
while( $row = pg_fetch_row($res) ) {
print '<tr>';
foreach( $fields as $i => $name ) {
$v = $row[$i];
if( $name == 'pages' ) {
$v = prettySize($v * PG_PAGE_SIZE);
}
print '<td>'.htmlspecialchars($v).'</td>';
}
print '</tr>';
}
print '</tbody>';
print '</table>';
print '</div>';
}
function prettySize($bytes, $precision = 2) {
$units = array('B', 'KB', 'MB', 'GB', 'TB');
$bytes = max($bytes, 0);
$pow = floor(($bytes ? log($bytes) : 0) / log(1024));
$pow = min($pow, count($units) - 1);
$bytes = $bytes / pow(1024, $pow);
return round($bytes, $precision) . ' ' . $units[$pow];
}
?>
</body>
</html>