User`s guide

Managing Resources 109
Overview
Service Level Management (SLM) is a special system allowing you to configure and control the
service levels provided to Container users. SLM can be used to manage the Container memory
resources, i.e. to adjust the amount of memory that any Container on the server is allowed to
consume. The SLM scheme has been developed to replace the UBC scheme of managing system
resources parameters, thus simplifying the resources management inside Containers by uniting
all memory-related parameters into a single slmmemorylimit parameter.
Note: Detailed information on all UBC parameters is provided in the Administrator's Guide to
Managing UBC Resources guide available at
http://www.parallels.com/products/virtuozzo/docs/.
SLM can be used to ensure that:
 The memory consumption by every Container on the server does not exceed its instant
memory limit.
 The memory usage by every Container on the server does not exceed its average limit.
 The total memory consumption by all Containers does not exceed the amount of memory
available on the server and prevents the total memory from reaching the point when the
server performance begins to significantly degrade.
 The 'low memory' usage by all Containers on the server does not leave the safe range.