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author | Thomas Schwinge <thomas@codesourcery.com> | 2013-03-19 18:47:23 +0100 |
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committer | Thomas Schwinge <thomas@codesourcery.com> | 2013-03-19 18:47:23 +0100 |
commit | d166bfaaa3ddf8b83b5cc6bde62f8872e6a80c82 (patch) | |
tree | 4d8a8904c2c49122c37895ed4573a5fcbd19ed4f /faq/slow.mdwn | |
parent | 64f867bbc45d265009a1bad590bc1d4d9ea91d6e (diff) | |
parent | ce8c2531cdb7ee05784437da4c38459e5d3897d6 (diff) |
Merge remote-tracking branch 'savannah/master'
As part of the merge, fix some typos, add copyright and licensing headers, and
a few more minor changes.
Diffstat (limited to 'faq/slow.mdwn')
-rw-r--r-- | faq/slow.mdwn | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/faq/slow.mdwn b/faq/slow.mdwn new file mode 100644 index 00000000..cb6c4655 --- /dev/null +++ b/faq/slow.mdwn @@ -0,0 +1,28 @@ +[[!meta copyright="Copyright © 2013 Free Software Foundation, Inc."]] + +[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable +id="license" text="Permission is granted to copy, distribute and/or modify this +document under the terms of the GNU Free Documentation License, Version 1.2 or +any later version published by the Free Software Foundation; with no Invariant +Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license +is included in the section entitled [[GNU Free Documentation +License|/fdl]]."]]"""]] + +[[!meta title="Is the Hurd slow?"]] + +The Hurd is currently slower than Linux, yes. But not very much, so it is +completely usable. + +Take care when running the Hurd in fully-virtualized machines: virtualization +software use ugly heuristics to make Linux run faster, which will not work on +the Hurd (or BSD, etc.) so comparisons in virtualized environments do not really +hold. + +The main reason for slowness is *not* because of the overhead of RPCs. It's +mostly simply because less care has been done on implementing what makes Linux +fast: intelligent read-ahead, carefully-tuned page cache, etc. + +There is no ground reason this can not be achieved on GNU/Hurd, it has just not +been a priority until now (first make it work, then make it work fast). We are +currently working on multi-page pager and read-ahead, which should improve this +a lot. |