Memory Leak Processes

Pay special attention to the processes in this group as to the most probable cause of your out-of-memory issues (sorted based on server role):

• Load Balancers
• Application Servers
• Database Servers
• Common Processes for Different-Type Stacks

Load Balancers

Common recommendations

Allocate more RAM to a corresponding node - handled services could just require more memory for normal operability.

Related processes

Process

Resolution

varnishd

Allocate more RAM to a node - handled services could just require more memory for normal operability

Application Servers

Click on points within the list below to view some common recommendations on dealing with memory shortage issues considering used programming language, as well as appropriate resolutions for the most demanding related processes:

• Java
• PHP
• Ruby
• Python
• NodeJS

Database Servers

Click on the required DB stack within the list below to reveal appropriate common recommendations on coping with OOM issues, as well as resolutions for particular killed processes:

• MySQL
• MongoDB
• PostgreSQL
• Redis

Common Processes for Different-Type Stacks

Common recommendations

Processes in this section can be run and, subsequently, killed within different node types. Thus, OOM resolutions for them vary and depend on a process itself - see the table below to find the appropriate recommendations.

Related processes

Process

Stack

Resolution

httpd

PHP, Ruby, Python, MySQL, MongoDB, PostgreSQL

1. Check the average amount of RAM used by each httpd instance. 2. Remove the Jelastic autoconfiguration mark within the /etc/httpd/httpd.conf file. 3. Decrease ServerLimit and MaxClients values according to the formula: (Total_RAM - 5%) / Average_RAM.

lsyncd

PHP, NodeJS, Python

Allocate more RAM to a node - handled services could just require more memory for normal operability.

httpd.itk

PHP, Ruby, Python

1. Check the average amount of RAM used by each httpd instance. 2. Remove the Jelastic autoconfiguration mark within the /etc/httpd/httpd.conf file. 3. Decrease ServerLimit and MaxClients values according to the formula: (Total_RAM - 5%) / Average_RAM.

procmail

Any

Restart container in order to restore the process.

vsftpd

Any

Restart container in order to restore the process.

yum

Any

Restart container in order to restore the process.

cc1

3rd party

Allocate more RAM to a node - handled services could just require more memory for normal operability.

clamd

3rd party

Allocate more RAM to a node - handled services could just require more memory for normal operability.

ffmpeg

3rd party

Allocate more RAM to a node - handled services could just require more memory for normal operability.

firefox

3rd party

Allocate more RAM to a node - handled services could just require more memory for normal operability.

newrelic-daemon

3rd party

Restart the main stack service (nginx, tomcat, nodejs, etc).