Overview

Project website docs.freebsd.org/en
Translation license BSD 2-Clause "Simplified" License
Translation process
  • Translations can be made directly.
  • Translation suggestions can be made.
  • Only chosen users can contribute.
  • The translation uses bilingual files.
File mask documentation/content/*/articles/vm-design/_index.po
Translation file Download documentation/content/zh_CN/articles/vm-design/_index.po
Last change April 10, 2021, 1:05 p.m.
Last author Hongyou Bai

String statistics

Strings percent Hosted strings Words percent Hosted words Characters percent Hosted characters
Total 82 5,388 30,906
Translated 4% 4 1% 4 1% 33
Needs editing 0% 0 0% 0 0% 0
Read-only 0% 0 0% 0 0% 0
Failing checks 0% 0 0% 0 0% 0
Strings with suggestions 0% 0 0% 0 0% 0
Untranslated strings 95% 78 99% 5,384 99% 30,873
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New string to translate

Documentation / articles/vm-design/_index — Chinese (Simplified) (zh_CN)

1 new string to translate appeared in the translation. 3 months ago
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Resource update

Documentation / articles/vm-design/_index — Chinese (Simplified) (zh_CN)

The "documentation/content/zh_CN/articles/vm-design/_index.po" file was changed. 3 months ago
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String updated in the repository

Documentation / articles/vm-design/_index — Chinese (Simplified) (zh_CN)

This document is outdated and some sections do not accurately describe the current state of the VM system. It is retained for historical purposes and may be updated over time.
 
3 months ago
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New string to translate

Documentation / articles/vm-design/_index — Chinese (Simplified) (zh_CN)

1 new string to translate appeared in the translation. 2 years ago
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Resource update

Documentation / articles/vm-design/_index — Chinese (Simplified) (zh_CN)

The "documentation/content/zh_CN/articles/vm-design/_index.po" file was changed. 2 years ago
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String updated in the repository

Documentation / articles/vm-design/_index — Chinese (Simplified) (zh_CN)

Matthew Dillon <dillon@apollo.backplane.com>
 
2 years ago
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New strings to translate

Documentation / articles/vm-design/_index — Chinese (Simplified) (zh_CN)

10 new strings to translate appeared to the translation. 2 years ago
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Resource update

Documentation / articles/vm-design/_index — Chinese (Simplified) (zh_CN)

The "documentation/content/zh_CN/articles/vm-design/_index.po" file was changed. 2 years ago
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String updated in the repository

Documentation / articles/vm-design/_index — Chinese (Simplified) (zh_CN)

FreeBSD has added complexity (the `pv_entry` scheme) to increase performance (to limit page table accesses to _only_ those pte's that need to be modified).
 
2 years ago
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String updated in the repository

Documentation / articles/vm-design/_index — Chinese (Simplified) (zh_CN)

Under Linux there is no such linked list. To remove all the hardware page table mappings for a `vm_page` linux must index into every VM object that _might_ have mapped the page. For example, if you have 50 processes all mapping the same shared library and want to get rid of page X in that library, you need to index into the page table for each of those 50 processes even if only 10 of them have actually mapped the page. So Linux is trading off the simplicity of its design against performance. Many VM algorithms which are O(1) or (small N) under FreeBSD wind up being O(N), O(N^2), or worse under Linux. Since the pte's representing a particular page in an object tend to be at the same offset in all the page tables they are mapped in, reducing the number of accesses into the page tables at the same pte offset will often avoid blowing away the L1 cache line for that offset, which can lead to better performance.
 
2 years ago
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