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There is now a fragmentation level for the table optimisation

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Michael Vogel 2015-12-12 17:46:24 +01:00
parent 3c55214f28
commit ec9b1b7afd
3 changed files with 24 additions and 5 deletions
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25
include/cron.php
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@ -189,24 +189,39 @@ function cron_run(&$argv, &$argc){
q('DELETE FROM `photo` WHERE `uid` = 0 AND `resource-id` LIKE "pic:%%" AND `created` < NOW() - INTERVAL %d SECOND', $cachetime);
}
// maximum table size in megabyte
// Maximum table size in megabyte
$max_tablesize = intval(get_config('system','optimize_max_tablesize')) * 1000000;
if ($max_tablesize == 0)
$max_tablesize = 100 * 1000000; // Default are 100 MB
// Minimum fragmentation level in percent
$fragmentation_level = intval(get_config('system','optimize_fragmentation')) / 100;
if ($fragmentation_level == 0)
$fragmentation_level = 0.3; // Default value is 30%
// Optimize some tables that need to be optimized
$r = q("SHOW TABLE STATUS");
foreach($r as $table) {
// Don't optimize tables that needn't to be optimized
if ($table["Data_free"] == 0)
continue;
// Don't optimize tables that are too large
if ($table["Data_length"] > $max_tablesize)
continue;
// Don't optimize empty tables
if ($table["Data_length"] == 0)
continue;
// Calculate fragmentation
$fragmentation = $table["Data_free"] / $table["Data_length"];
logger("Table ".$table["Name"]." - Fragmentation level: ".round($fragmentation * 100, 2), LOGGER_DEBUG);
// Don't optimize tables that needn't to be optimized
if ($fragmentation < $fragmentation_level)
continue;
// So optimize it
logger("Optimize Table ".$table["Name"], LOGGER_DEBUG);
q("OPTIMIZE TABLE `%s`", dbesc($table["Name"]));
}