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We've recently had an issue with an EC2 instance that bought down our mySQL service.

I've checked the system log (AWS Console: Action > Instance Settings > Get System Log)

However the output isn't self explanatory:

For instance there are hundreds of lines along the following:

[7240052.632109] [15542]    48 15542   100366     1980     190       3        0             0 httpd

...until the systems runs out of memory:

[7240052.636809] Out of memory: Kill process 15239 (httpd) score 10 or sacrifice child

Could anyone explain what the first line means? It's columns aren't explained anywhere I can locate. I'm assuming column 6 and 7 are memory related as I can see them dropping before the crash.

Dan382
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    Log in to the system and read the actual log. It should be in /var/log/syslog or /var/log/messages. *"until the systems runs out of memory"* Not really "until." That was earlier. All of this information is here **because** the system ran out of memory. You're seeing part of a dump of data about the running processes at the time the incident occurred. – Michael - sqlbot Aug 16 '16 at 17:47

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