[ruby-core:80197] [Ruby trunk Feature#12973][Assigned] [RFC] net/http: use require_relative to reduce syscalls

From: hsbt@...
Date: 2017-03-17 01:08:40 UTC
List: ruby-core #80197
Issue #12973 has been updated by hsbt (Hiroshi SHIBATA).

Status changed from Open to Assigned
Assignee set to naruse (Yui NARUSE)
Target version set to 2.5

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Feature #12973: [RFC] net/http: use require_relative to reduce syscalls
https://bugs.ruby-lang.org/issues/12973#change-63635

* Author: normalperson (Eric Wong)
* Status: Assigned
* Priority: Normal
* Assignee: naruse (Yui NARUSE)
* Target version: 2.5
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require_relative speeds up loading of files by reducing path
lookups.  On a clean install with RubyGems-enabled,
"ruby -rnet/http -e exit" shows a reduction in failed open(2)
syscalls from 410 to 350 (x86-64 GNU/Linux).

I could not measure a time difference on my Linux-based
machines, however this should be noticeable to users of other
kernels with worse syscall and VFS performance than Linux.

Further use of require_relative will reduce lookups in other
places.


Thoughts?

Ideally, I'd like to get all of stdlib using require_relative.
Syscall failures annoy me greatly by making strace output noisy.

This is probably more suited for the 2.5 development cycle.


---Files--------------------------------
0001-net-http-use-require_relative-to-reduce-syscalls.patch (1.67 KB)


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