Out of memory termination, but 1.4gb available?

mikefromnz

• February 14, 2017 13:13

I got the message below today, but strangely enough as you can see, was using 412mb, and had 1.42 free, so why "out of memory" ??
Process Name mysqld Event Time Tuesday, February 14, 2017 at 12:23:51 PM UTC PID 1719 Process UID 496 Process Username mysql Process Total Virtual Memory 862916kB Process Anonymous Resident Set Size 83580kB Process File Resident Set Size 4kB Process OOM Score 57 Status Out of Memory ? Memory Information Used 421 MB Available 1.42 GB Installed 1.83 GB Load Information 0.02 0.72 0.58 Uptime 3 days, 3 hours, 58 minutes, and 4 seconds IOStat Information avg-cpu: %user %nice %system %iowait %steal %idle 3.65 0.53 1.20 0.13 0.03 94.45 Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn vda 7.99 304.59 168.06 83301074 45961856 Top Processes PID Owner CPU % Memory % Command 17426 mysql 0.48 6.43 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --log-error=/var/lib/mysql/**REMOVED**.err --open-files-limit=10000 --pid-file=/var/lib/mysql/**REMOVED**.pid 13628 nobody 0.01 2.00 /usr/sbin/httpd -k start 17294 nobody 0.02 1.99 /usr/sbin/httpd -k start 17306 nobody 0.01 1.98 /usr/sbin/httpd -k start 17310 nobody 0.01 1.98 /usr/sbin/httpd -k start For addtional details, see the attached dmesg log dump. Preview of "oom_dmesg.txt" [273102.806526] [17393] 508 17393 126963 3331 0 0 0 php-cgi [273102.807671] [17394] 508 17394 126963 2610 1 0 0 php-cgi [273102.808779] [17395] 508 17395 126963 3265 1 0 0 php-cgi [273102.809841] [17396] 508 17396 126963 3680 1 0 0 php-cgi [273102.810874] [17397] 508 17397 126963 2962 1 0 0 php-cgi [273102.811938] [17398] 508 17398 126963 4172 1 0 0 php-cgi [273102.813036] [17399] 508 17399 126963 3493 1 0 0 php-cgi [273102.814145] [17400] 508 17400 77635 1182 0 0 0 php-cgi [273102.815232] Out of memory: Kill process 1719 (mysqld) score 57 or sacrifice child [273102.816318] Killed process 1719, UID 496, (mysqld) total-vm:862916kB, anon-rss:83580kB, file-rss:4kB

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  cPanelMichael

  • February 14, 2017 18:22

  Hello, The following document is useful for understanding how the OOM Killer works: OOM Killer - linux-mm.org Wiki You may also find this URL helpful: How to diagnose causes of oom-killer killing processes Thank you.

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