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I am using a $10/month droplet with Ubuntu 14.04. I noticed that a process named “jbd2/vda1-8” pops up from time to time. As soon as it runs, all Apache processes become blocked and my entire server becomes unresponsive.
Some output from “ps auxf” command:
Wed May 27 15:58:10 UTC 2015
root 199 0.0 0.0 0 0 ? D May19 6:52 \_ [jbd2/vda1-8]
Wed May 27 15:58:11 UTC 2015
root 199 0.0 0.0 0 0 ? D May19 6:52 \_ [jbd2/vda1-8]
www-data 27636 0.0 0.9 406192 9604 ? D 15:57 0:00 \_ /usr/sbin/apache2 -k start
Wed May 27 15:58:12 UTC 2015
root 199 0.0 0.0 0 0 ? D May19 6:52 \_ [jbd2/vda1-8]
www-data 27362 0.1 1.1 405668 11672 ? D 15:56 0:00 \_ /usr/sbin/apache2 -k start
www-data 27636 0.0 0.9 406192 9604 ? D 15:57 0:00 \_ /usr/sbin/apache2 -k start
www-data 27685 0.3 1.3 408368 13812 ? D 15:57 0:00 \_ /usr/sbin/apache2 -k start
www-data 27738 0.2 0.9 405252 9340 ? D 15:57 0:00 \_ /usr/sbin/apache2 -k start
The “top” command also shows “wa” above 90.
I realized it is something to do with disk journaling. Can it be disabled, or is anything I can do to reduce the load from “jbd2” without affecting my droplet?
Thanks for any advice!
Gary O'Hara
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Kashif S.
Jan Misker
Henery walt
Jan Misker
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Alif