Don't optimize the tables when the maximum size is lower than zero
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@ -335,35 +335,37 @@ function cron_clear_cache(&$a) {
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if ($max_tablesize == 0)
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$max_tablesize = 100 * 1000000; // Default are 100 MB
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// Minimum fragmentation level in percent
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$fragmentation_level = intval(get_config('system','optimize_fragmentation')) / 100;
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if ($fragmentation_level == 0)
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$fragmentation_level = 0.3; // Default value is 30%
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if ($max_tablesize > 0) {
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// Minimum fragmentation level in percent
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$fragmentation_level = intval(get_config('system','optimize_fragmentation')) / 100;
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if ($fragmentation_level == 0)
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$fragmentation_level = 0.3; // Default value is 30%
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// Optimize some tables that need to be optimized
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$r = q("SHOW TABLE STATUS");
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foreach($r as $table) {
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// Optimize some tables that need to be optimized
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$r = q("SHOW TABLE STATUS");
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foreach($r as $table) {
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// Don't optimize tables that are too large
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if ($table["Data_length"] > $max_tablesize)
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continue;
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// Don't optimize tables that are too large
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if ($table["Data_length"] > $max_tablesize)
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continue;
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// Don't optimize empty tables
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if ($table["Data_length"] == 0)
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continue;
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// Don't optimize empty tables
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if ($table["Data_length"] == 0)
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continue;
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// Calculate fragmentation
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$fragmentation = $table["Data_free"] / ($table["Data_length"] + $table["Index_length"]);
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// Calculate fragmentation
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$fragmentation = $table["Data_free"] / ($table["Data_length"] + $table["Index_length"]);
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logger("Table ".$table["Name"]." - Fragmentation level: ".round($fragmentation * 100, 2), LOGGER_DEBUG);
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logger("Table ".$table["Name"]." - Fragmentation level: ".round($fragmentation * 100, 2), LOGGER_DEBUG);
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// Don't optimize tables that needn't to be optimized
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if ($fragmentation < $fragmentation_level)
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continue;
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// Don't optimize tables that needn't to be optimized
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if ($fragmentation < $fragmentation_level)
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continue;
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// So optimize it
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logger("Optimize Table ".$table["Name"], LOGGER_DEBUG);
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q("OPTIMIZE TABLE `%s`", dbesc($table["Name"]));
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// So optimize it
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logger("Optimize Table ".$table["Name"], LOGGER_DEBUG);
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q("OPTIMIZE TABLE `%s`", dbesc($table["Name"]));
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}
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}
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set_config('system','cache_last_cleared', time());
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