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Merge pull request #1468 from Neozonz/issue-1467

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MySQL Optimization: always use order by when using limits
This commit is contained in:
Sebastian Grewe 2014-01-19 06:39:13 -08:00
commit 10e3fcab7e
5 changed files with 7 additions and 7 deletions
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2
public/include/classes/block.class.php
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@ -145,7 +145,7 @@ class Block extends Base {
* @return bool
**/
public function setConfirmations($block_id, $confirmations) {
$stmt = $this->mysqli->prepare("UPDATE $this->table SET confirmations = ? WHERE id = ?");
$stmt = $this->mysqli->prepare("UPDATE $this->table SET confirmations = ? WHERE id = ? LIMIT 1");
if ($this->checkStmt($stmt) && $stmt->bind_param("ii", $confirmations, $block_id) && $stmt->execute())
return true;
return $this->sqlError();

2
public/include/classes/payout.class.php
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@ -60,7 +60,7 @@ class Payout Extends Base {
* @return boolean bool True or False
**/
public function setProcessed($id) {
$stmt = $this->mysqli->prepare("UPDATE $this->table SET completed = 1 WHERE id = ?");
$stmt = $this->mysqli->prepare("UPDATE $this->table SET completed = 1 WHERE id = ? LIMIT 1");
if ($stmt && $stmt->bind_param('i', $id) && $stmt->execute())
return true;
return $this->sqlError('E0051');

2
public/include/classes/share.class.php
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@ -244,7 +244,7 @@ class Share Extends Base {
while ($affected > 0) {
// Sleep first to allow any IO to cleanup
sleep($this->config['purge']['sleep']);
$stmt = $this->mysqli->prepare("DELETE FROM $this->table WHERE id > ? AND id <= ? LIMIT " . $this->config['purge']['shares']);
$stmt = $this->mysqli->prepare("DELETE FROM $this->table WHERE id > ? AND id <= ? ORDER BY id LIMIT " . $this->config['purge']['shares']);
$start = microtime(true);
if ($this->checkStmt($stmt) && $stmt->bind_param('ii', $previous_upstream, $current_upstream) && $stmt->execute()) {
$affected = $stmt->affected_rows;

4
public/include/classes/statistics.class.php
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@ -567,7 +567,7 @@ class Statistics extends Base {
* @param worker_id int Worker ID to fetch hashrate for
* @return data int Current hashrate in khash/s
**/
public function getWorkerHashrate($worker_id) {
public function getWorkerHashrate($worker_id,$interval=600) {
$this->debug->append("STA " . __METHOD__, 4);
if ($data = $this->memcache->get(__FUNCTION__ . $worker_id)) return $data;
$stmt = $this->mysqli->prepare("
@ -576,7 +576,7 @@ class Statistics extends Base {
" . $this->user->getTableName() . " AS u
WHERE u.username = SUBSTRING_INDEX( s.username, '.', 1 )
AND our_result = 'Y'
AND s.time > DATE_SUB(now(), INTERVAL 600 SECOND)
AND s.time > DATE_SUB(now(), INTERVAL ? SECOND)
AND u.id = ?");
if ($this->checkStmt($stmt) && $stmt->bind_param("i", $account_id) && $stmt->execute() && $result = $stmt->get_result() )
return $this->memcache->setCache(__FUNCTION__ . $worker_id, $result->fetch_object()->hashrate);

4
public/include/classes/worker.class.php
View File

@ -31,7 +31,7 @@ class Worker extends Base {
}
// Prefix the WebUser to Worker name
$value['username'] = "$username." . $value['username'];
$stmt = $this->mysqli->prepare("UPDATE $this->table SET password = ?, username = ?, monitor = ? WHERE account_id = ? AND id = ?");
$stmt = $this->mysqli->prepare("UPDATE $this->table SET password = ?, username = ?, monitor = ? WHERE account_id = ? AND id = ? LIMIT 1");
if ( ! ( $this->checkStmt($stmt) && $stmt->bind_param('ssiii', $value['password'], $value['username'], $value['monitor'], $account_id, $key) && $stmt->execute()) )
$iFailed++;
}
@ -259,7 +259,7 @@ class Worker extends Base {
**/
public function deleteWorker($account_id, $id) {
$this->debug->append("STA " . __METHOD__, 4);
$stmt = $this->mysqli->prepare("DELETE FROM $this->table WHERE account_id = ? AND id = ?");
$stmt = $this->mysqli->prepare("DELETE FROM $this->table WHERE account_id = ? AND id = ? LIMIT 1");
if ($this->checkStmt($stmt) && $stmt->bind_param('ii', $account_id, $id) && $stmt->execute() && $stmt->affected_rows == 1)
return true;
return $this->sqlError('E0061');