Please whitelist cPanel in your adblocker so that you’re able to see our version release promotions, thanks!

The Community Forums

Interact with an entire community of cPanel & WHM users!

SOLVED Long-running MySQL queries

Discussion in 'Database Discussion' started by Mugoma, Jan 7, 2017.

  1. Mugoma

    Mugoma Well-Known Member

    Joined:
    Aug 1, 2016
    Messages:
    74
    Likes Received:
    4
    Trophy Points:
    8
    Location:
    Nairobi
    cPanel Access Level:
    Root Administrator
    We are experiencing high load since about 4 days ago.

    We realised MySQL seems to be one of the causes.

    In particular we're seeing this long-running query:

    SELECT TABLE_SCHEMA as DB,SUM(DATA_LENGTH)+SUM(INDEX_LENGTH) AS SPACEUSED from information_schema.ta


    This seems to be a query run by cPanel. How can we eliminate it or reduce frequency?
     
  2. cPanelMichael

    cPanelMichael Forums Analyst
    Staff Member

    Joined:
    Apr 11, 2011
    Messages:
    44,378
    Likes Received:
    1,857
    Trophy Points:
    363
    cPanel Access Level:
    Root Administrator
    Hello @Mugoma,

    You can disable the following option under the SQL tab in WHM >> Tweak Settings to disable this activity:

    Use INFORMATION_SCHEMA to acquire MySQL disk usage

    Per the option description:

    Using INFORMATION_SCHEMA ensures that disk usage by MySQL tables is included in totals. However, enabling this option may cause a significant drop in performance as MySQL may become unresponsive until data collection is complete. Disabling this option causes the system to query the filesystem directly, potentially excluding disk space used by some database tables. Note: If you use a remote MySQL server, you must turn this setting On in order to calculate MySQL disk usage.

    Thank you.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  3. Mugoma

    Mugoma Well-Known Member

    Joined:
    Aug 1, 2016
    Messages:
    74
    Likes Received:
    4
    Trophy Points:
    8
    Location:
    Nairobi
    cPanel Access Level:
    Root Administrator
    Disabling 'Use INFORMATION_SCHEMA to acquire MySQL disk usage' as suggested solved the problem.
     
  4. cPanelMichael

    cPanelMichael Forums Analyst
    Staff Member

    Joined:
    Apr 11, 2011
    Messages:
    44,378
    Likes Received:
    1,857
    Trophy Points:
    363
    cPanel Access Level:
    Root Administrator
    I'm happy to see the issue is now resolved. Thank you for updating us with the outcome.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
Loading...

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice