dcache management

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One Line Summary

Add dcache accounting/limiting to the kernel


The Linux kernel uses this cache to keep VFS information at hands when accessing files. This cache grows in time, but system tries to shrink one from time to time. Unfortunately elements in this cache can be pinned in memory in way too big amount thus causing DoS attacks.

The intention of the dcache management is to prevent pinning too many cache elements.

There is an on-going discussion on lkml about the feature and its interface.


kernel, dcache, resource management, containers


  • Biography

    Pavel Emelyanov is a core Virtuozzo and OpenVZ kernel developer working in the project for the last six years. He’s currently the kernel team leader at Parallels and manages the development of all the kernel features for OpenVZ and Parallels Virtuozzo Containers. Pavel is also a prolific mainstream kernel contributor. He holds a PhD degree in Applied Mathematics from the Moscow Institute of Physics and Technology.

  • Kir Kolyshkin



    Kirill Kolyshkin was named leader and project manager for the OpenVZ project in 2005 to further the adoption of containers virtualization for Linux. He spearheads the overall development and manages all key architecture, updates and feature upgrades for OpenVZ. Kolyshkin has more than 10 years Linux experience and has long been an active open source advocate. He is a frequent speaker about virtualization technology and his 15-years career experience includes positions in information technology at Deutsche Bank and telecommunications company, Severtelecom. He holds a degree in Computer Science from the Ukhta State Technical University.