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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2013-03-17 14:28:50 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2013-03-17 14:28:50 +0100 |
| commit | de92647ad706c6784e60592f6a95428c53a91814 (patch) | |
| tree | 7df8543970d1e94242bace7035d4dc4ea8172aaa | |
| parent | 5672d307c7d2cd6bbc55bd8ffd3ad31954488e26 (diff) | |
more comments about slowness
| -rw-r--r-- | faq/slow.mdwn | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/faq/slow.mdwn b/faq/slow.mdwn index 831be01f..cb6c4655 100644 --- a/faq/slow.mdwn +++ b/faq/slow.mdwn @@ -10,11 +10,17 @@ License|/fdl]]."]]"""]] [[!meta title="Is the Hurd slow?"]] -The Hurd is currently slower than Linux, yes. +The Hurd is currently slower than Linux, yes. But not very much, so it is +completely usable. -The main reason is *not* because of the overhead of RPCs. It's simply because -less care has been done on implementing what makes Linux fast: intelligent -read-ahead, carefully-tuned page cache, etc. +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 |