谁能帮忙解释一下以下日志:
MariaDB [(none)]> show full processlist;
+--------+----------------+-----------------+---------------------+---------+-----
| 3 | user-rw | localhost | bets-stage | Sleep | 51 | | NULL | 0.000 |
| 11 | user-rw | localhost | bets-stage | Sleep | 39 | | NULL | 0.000 |
| 13 | db1029865-news | localhost | db1029865-sportnews | Query | 30 | Writing to net | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 17 | db1029865-news | localhost | db1029865-sportnews | Query | 20 | Writing to net | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 34 | db1029865-news | localhost | db1029865-sportnews | Query | 3 | Sorting result | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 37 | db1029865-news | localhost | db1029865-sportnews | Sleep | 31 | | NULL | 0.000 |
| 39 | user-rw | localhost | bets-stage | Sleep | 77 | | NULL | 0.000 |
| 40 | db1029865-news | localhost | db1029865-sportnews | Query | 16 | Writing to net | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 41 | user-rw | localhost | bets-stage | Sleep | 43 | | NULL | 0.000 |
| 49 | db1029865-news | localhost | db1029865-sportnews | Query | 24 | Writing to net | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 52 | db1029865-news | localhost | db1029865-sportnews | Sleep | 36 | | NULL | 0.000 |
| 53 | db1029865-news | localhost | db1029865-sportnews | Query | 26 | Writing to net | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 54 | db1029865-news | localhost | db1029865-sportnews | Query | 1 | Copying to tmp table | SELECT `post`.*, `post`.`team1_seourl` AS `team1seourl`, `post`.`team1_seourl` AS `teamseourl`, `post`.`team2_seourl` AS `team2seourl`, IF(`temp_tn1uid`.`value` > 0, `post`.`team1_uid`, NULL) AS `tn1uid`, IF(`temp_tn2uid`.`value` > 0, `post`.`team2_uid`, NULL) AS `tn2uid` FROM (SELECT `post`.*, `post_j`.`title`, `post_j`.`teaser` FROM (SELECT `post`.* FROM `sportnews_cache_post_team` AS `post` FORCE INDEX(`sort_index`) JOIN (SELECT `cache_uid` FROM `sportnews_cache_post_team` AS `post` WHERE (`post`.`team1_uid` = 4894 OR `post`.`team2_uid` = 4894) GROUP BY `post`.`uid` ORDER BY `post`.`cache_uid` LIMIT 40 OFFSET 0) AS `post_j` ON `post`.`cache_uid` = `post_j`.`cache_uid`) AS `post` JOIN `sportnews_post` AS `post_j` ON `post_j`.`uid` = `post`.`uid`) AS `post` LEFT JOIN (SELECT `uid`, COUNT(*) AS `value` FROM `sportnews_cache_post_team` AS `post` FORCE INDEX(`sort_index`) WHERE `post`.`team1_uid` = 4894 GROUP BY `post`.`uid`) AS `temp_tn1uid` ON `temp_tn1uid`.`uid` = `post`.`uid` LEFT JOIN (SELECT `uid`, COUNT(*) AS `value` FROM `sportnews_cache_post_team` AS `post` FORCE INDEX(`sort_index`) WHERE `post`.`team2_uid` = 4894 GROUP BY `post`.`uid`) AS `temp_tn2uid` ON `temp_tn2uid`.`uid` = `post`.`uid` | 0.000 |
| 57 | db1029865-news | localhost | db1029865-sportnews | Sleep | 22 | | NULL | 0.000 |
| 75 | user-rw | localhost | bets-stage | Sleep | 32 | | NULL | 0.000 |
| 77 | db1029865-news | localhost | db1029865-sportnews | Sleep | 6 | | NULL | 0.000 |
| 78 | db1029865-news | localhost | db1029865-sportnews | Sleep | 15 | | NULL | 0.000 |
| 79 | db1029865-news | localhost | db1029865-sportnews | Sleep | 3 | | NULL | 0.000 |
| 88 | db1029865-news | localhost | db1029865-sportnews | Query | 18 | Writing to net | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 99 | db1029865-news | localhost | db1029865-sportnews | Sleep | 39 | | NULL | 0.000 |
| 100 | db1029865-news | localhost | db1029865-sportnews | Query | 1 | Sorting result | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 110 | db1029865-news | localhost | db1029865-sportnews | Query | 32 | Writing to net | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 117 | db1029865-news | localhost | db1029865-sportnews | Sleep | 9 | | NULL | 0.000 |
| 119 | user-rw | localhost | bets-stage | Sleep | 70 | | NULL | 0.000 |
| 137 | user-rw | localhost | bets-stage | Sleep | 34 | | NULL | 0.000 |
| 138 | db1029865-news | localhost | db1029865-sportnews | Query | 28 | Sending data | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 160 | user-rw | localhost | bets-stage | Sleep | 40 | | NULL | 0.000 |
| 162 | user-rw | localhost | bets-stage | Sleep | 27 | | NULL | 0.000 |
| 189 | user-rw | localhost | bets-stage | Sleep | 19 | | NULL | 0.000 |
| 208 | user-rw | localhost | bets-stage | Sleep | 56 | | NULL | 0.000 |
| 218 | db1029865-news | localhost | db1029865-sportnews | Query | 22 | Writing to net | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 219 | user-rw | localhost | bets-stage | Sleep | 3 | | NULL | 0.000 |
| 274 | user-rw | localhost | bets-stage | Sleep | 20 | | NULL | 0.000 |
| 301 | user-rw | localhost | bets-stage | Sleep | 30 | | NULL | 0.000 |
| 302 | user-rw | localhost | bets-stage | Sleep | 2 | | NULL | 0.000 |
| 356 | user-rw | localhost | bets-stage | Sleep | 36 | | NULL | 0.000 |
| 435 | user-rw | localhost | bets-stage | Sleep | 55 | | NULL | 0.000 |
| 511 | user-rw | localhost | bets-stage | Sleep | 59 | | NULL | 0.000 |
| 2007 | user-rw | localhost | bets-stage | Sleep | 61 | | NULL | 0.000 |
| 606299 | db1029865-news | localhost:34857 | db1029865-sportnews | Sleep | 60 | | NULL | 0.000 |
| 606300 | db1029865-news | localhost:34860 | db1029865-sportnews | Sleep | 60 | | NULL | 0.000 |
| 606438 | db1029865-news | localhost:34940 | db1029865-sportnews | Sleep | 91 | | NULL | 0.000 |
| 606439 | db1029865-news | localhost:34941 | db1029865-sportnews | Sleep | 3 | | NULL | 0.000 |
| 610631 | user-rw | localhost:35813 | sportnews-stage | Sleep | 177 | | NULL | 0.000 |
| 611528 | db1029865-news | localhost:36298 | db1029865-sportnews | Query | 10 | Writing to net | SELECT /*!40001 SQL_NO_CACHE */ * FROM `sportnews_log` | 0.000 |
| 612224 | root | localhost | NULL | Query | 0 | NULL | show full processlist | 0.000 |
+--------+----------------+-----------------+---------------------+---------+------+----------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+
47 rows in set (0.00 sec)
| 13 | db1029865-news | localhost | db1029865-sportnews | Query | 24 | Writing to net | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 17 | db1029865-news | localhost | db1029865-sportnews | Query | 21 | Sending data | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 34 | db1029865-news | localhost | db1029865-sportnews | Query | 10 | Sorting result | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 37 | db1029865-news | localhost | db1029865-sportnews | Query | 6 | Sorting result | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 39 | user-rw | localhost | bets-stage | Sleep | 38 | | NULL | 0.000 |
| 40 | db1029865-news | localhost | db1029865-sportnews | Query | 21 | Sending data | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 41 | user-rw | localhost | bets-stage | Sleep | 139 | | NULL | 0.000 |
| 49 | db1029865-news | localhost | db1029865-sportnews | Query | 25 | Sending data | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 52 | db1029865-news | localhost | db1029865-sportnews | Query | 8 | Sorting result | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 53 | db1029865-news | localhost | db1029865-sportnews | Query | 20 | Writing to net | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 54 | db1029865-news | localhost | db1029865-sportnews | Query | 7 | Sorting result | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 57 | db1029865-news | localhost | db1029865-sportnews | Sleep | 48 | | NULL | 0.000 |
| 75 | user-rw | localhost | bets-stage | Sleep | 33 | | NULL | 0.000 |
| 77 | db1029865-news | localhost | db1029865-sportnews | Query | 28 | Sending data | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 78 | db1029865-news | localhost | db1029865-sportnews | Sleep | 29 | | NULL | 0.000 |
| 79 | db1029865-news | localhost | db1029865-sportnews | Sleep | 6 | | NULL | 0.000 |
| 88 | db1029865-news | localhost | db1029865-sportnews | Query | 14 | Sorting result | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 99 | db1029865-news | localhost | db1029865-sportnews | Query | 10 | Sorting result | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 100 | db1029865-news | localhost | db1029865-sportnews | Query | 13 | Sorting result | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 110 | db1029865-news | localhost | db1029865-sportnews | Sleep | 4 | | NULL | 0.000 |
| 117 | db1029865-news | localhost | db1029865-sportnews | Query | 34 | Sending data | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 119 | user-rw | localhost | bets-stage | Sleep | 10 | | NULL | 0.000 |
| 137 | user-rw | localhost | bets-stage | Sleep | 24 | | NULL | 0.000 |
| 138 | db1029865-news | localhost | db1029865-sportnews | Query | 31 | Sending data | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
ORDER BY `created_on` desc | 0.000 |
| 160 | user-rw | localhost | bets-stage | Sleep | 260 | | NULL | 0.000 |
| 162 | user-rw | localhost | bets-stage | Sleep | 136 | | NULL | 0.000 |
| 189 | user-rw | localhost | bets-stage | Sleep | 14 | | NULL | 0.000 |
| 208 | user-rw | localhost | bets-stage | Sleep | 10 | | NULL | 0.000 |
| 218 | db1029865-news | localhost | db1029865-sportnews | Query | 24 | Sending data | SELECT `detail`, UNIX_TIMESTAMP(created_on) AS created_on
FROM (`sportnews_log`)
WHERE `severity` = 'info'
AND `source` = 'crawler'
最佳答案
正如少数用户评论的那样，需要更多信息才能了解确切的问题。
从您提供的进程列表输出中可以看出，您的许多查询都停留在“写入网络”状态 20-30 秒范围内。这意味着要么您的选择查询返回大量数据并需要很长时间才能将数据包写入网络，要么您的网络速度缓慢/受到其他进程的限制并导致 mysql 输出缓慢。
如果任何页面正在使用这些查询，他们将在 20-30 秒内无法获取结果(相当于网站关闭)
关于php - 网站宕机，无法理解网络服务器进程日志？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/29847101/