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{{UBC toc}}
This article describes how fractions accounting algorithm used in [[User pagesaccounting|privvmpages accounting]] works.
== Introduction ==
The goal of this the algorithm is to calculate the {{H:title|Resident Set Size|RSS}} for each beancounter. This is done by establishing so called many-to-many relation between physical pages and beancounters.
{{Note|the term “page is mapped to beancounter” used in this article means “there exists an <code>mm_struct</code>, the pages is mapped to and this <code>mm_struct</code> belongs to this beancounter”.}}