[ruby-core:65518] [ruby-trunk - Feature #10341] [Open] Fiber switch performance improvements

[ruby-core:65518] [ruby-trunk - Feature #10341] [Open] Fiber switch performance improvements

[Knut.Franke]

Issue #10341 has been reported by Knut Franke.

----------------------------------------
Feature #10341: Fiber switch performance improvements
https://bugs.ruby-lang.org/issues/10341

* Author: Knut Franke
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
----------------------------------------
The attached patches increase performance of switches between Fibers by ~17% on my test system (Linux, gcc 4.8.2).

Patches 1-3 are purely cosmetic, but included here because submitting them separately would cause conflicts between the patch sets. If these are rejected, I can prepare stand-alone versions of 4/5.

Patch 4 yields the most significant performance increase (~12%). The benefit of patch 5 is lower, and it's a larger change; so this one could optionally be omitted.

~~~
require 'benchmark'

fib = Fiber.new do
	loop { Fiber.yield }
end

Benchmark.bm do |bm|
	3.times do
		results << bm.report { 10_000_000.times { fib.resume } }
	end
	avg = results.inject(:+) / results.size
        [avg]
end
~~~

Raw benchmarking results:

~~~
trunk@47827 - 7.59s
patch 4           - 6.59s (87% of trunk)
patch 4+5      - 6.33s (83% of trunk)
~~~

---Files--------------------------------
0001-Remove-unused-prev_fiber-next_fiber-fields.patch (2.02 KB)
0002-Code-cleanup-in-fiber_switch-fiber_store.patch (4.79 KB)
0003-Small-code-cleanup.patch (1.16 KB)
0004-cont_save_thread-Sparse-copying-of-thread-data.patch (3.39 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)


-- 
https://bugs.ruby-lang.org/

[ruby-core:65535] Re: [ruby-trunk - Feature #10341] [Open] Fiber switch performance improvements

[Eric Wong]

Cool, I can confirm the performance results on one of my systems.
I do not know the fiber code well, but it seems correct.

I think fiber_mark_self (and any non-static functions) needs to be
prefixed with "rb_" even if it is an internal API.

[ruby-core:65536] [ruby-trunk - Feature #10341] Fiber switch performance improvements

[normalperson]

Issue #10341 has been updated by Eric Wong.


 Cool, I can confirm the performance results on one of my systems.
 I do not know the fiber code well, but it seems correct.
 
 I think fiber_mark_self (and any non-static functions) needs to be
 prefixed with "rb_" even if it is an internal API.

----------------------------------------
Feature #10341: Fiber switch performance improvements
https://bugs.ruby-lang.org/issues/10341#change-49307

* Author: Knut Franke
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
----------------------------------------
The attached patches increase performance of switches between Fibers by ~17% on my test system (Linux, gcc 4.8.2).

Patches 1-3 are purely cosmetic, but included here because submitting them separately would cause conflicts between the patch sets. If these are rejected, I can prepare stand-alone versions of 4/5.

Patch 4 yields the most significant performance increase (~12%). The benefit of patch 5 is lower, and it's a larger change; so this one could optionally be omitted.

~~~
require 'benchmark'

fib = Fiber.new do
	loop { Fiber.yield }
end

Benchmark.bm do |bm|
	3.times do
		results << bm.report { 10_000_000.times { fib.resume } }
	end
	avg = results.inject(:+) / results.size
        [avg]
end
~~~

Raw benchmarking results:

~~~
trunk@47827 - 7.59s
patch 4           - 6.59s (87% of trunk)
patch 4+5      - 6.33s (83% of trunk)
~~~

---Files--------------------------------
0001-Remove-unused-prev_fiber-next_fiber-fields.patch (2.02 KB)
0002-Code-cleanup-in-fiber_switch-fiber_store.patch (4.79 KB)
0003-Small-code-cleanup.patch (1.16 KB)
0004-cont_save_thread-Sparse-copying-of-thread-data.patch (3.39 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)


-- 
https://bugs.ruby-lang.org/

[ruby-core:65621] [ruby-trunk - Feature #10341] Fiber switch performance improvements

[Knut.Franke]

Issue #10341 has been updated by Knut Franke.

File 0005-Optimize-fiber_switch-callees.patch added

Attached a revised version of patch 5 with fiber_mark_self replaced by rb_fiber_mark_self. Thanks for the hint.

----------------------------------------
Feature #10341: Fiber switch performance improvements
https://bugs.ruby-lang.org/issues/10341#change-49358

* Author: Knut Franke
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
----------------------------------------
The attached patches increase performance of switches between Fibers by ~17% on my test system (Linux, gcc 4.8.2).

Patches 1-3 are purely cosmetic, but included here because submitting them separately would cause conflicts between the patch sets. If these are rejected, I can prepare stand-alone versions of 4/5.

Patch 4 yields the most significant performance increase (~12%). The benefit of patch 5 is lower, and it's a larger change; so this one could optionally be omitted.

~~~
require 'benchmark'

fib = Fiber.new do
	loop { Fiber.yield }
end

Benchmark.bm do |bm|
	3.times do
		results << bm.report { 10_000_000.times { fib.resume } }
	end
	avg = results.inject(:+) / results.size
        [avg]
end
~~~

Raw benchmarking results:

~~~
trunk@47827 - 7.59s
patch 4           - 6.59s (87% of trunk)
patch 4+5      - 6.33s (83% of trunk)
~~~

---Files--------------------------------
0001-Remove-unused-prev_fiber-next_fiber-fields.patch (2.02 KB)
0002-Code-cleanup-in-fiber_switch-fiber_store.patch (4.79 KB)
0003-Small-code-cleanup.patch (1.16 KB)
0004-cont_save_thread-Sparse-copying-of-thread-data.patch (3.39 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)


-- 
https://bugs.ruby-lang.org/

[ruby-core:65623] Re: [ruby-trunk - Feature #10341] Fiber switch performance improvements

[Eric Wong]

Thanks.  I'll wait a few days for others to look and try it out
before committing.

[ruby-core:65624] [ruby-trunk - Feature #10341] Fiber switch performance improvements

[normalperson]

Issue #10341 has been updated by Eric Wong.


 Thanks.  I'll wait a few days for others to look and try it out
 before committing.

----------------------------------------
Feature #10341: Fiber switch performance improvements
https://bugs.ruby-lang.org/issues/10341#change-49359

* Author: Knut Franke
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
----------------------------------------
The attached patches increase performance of switches between Fibers by ~17% on my test system (Linux, gcc 4.8.2).

Patches 1-3 are purely cosmetic, but included here because submitting them separately would cause conflicts between the patch sets. If these are rejected, I can prepare stand-alone versions of 4/5.

Patch 4 yields the most significant performance increase (~12%). The benefit of patch 5 is lower, and it's a larger change; so this one could optionally be omitted.

~~~
require 'benchmark'

fib = Fiber.new do
	loop { Fiber.yield }
end

Benchmark.bm do |bm|
	3.times do
		results << bm.report { 10_000_000.times { fib.resume } }
	end
	avg = results.inject(:+) / results.size
        [avg]
end
~~~

Raw benchmarking results:

~~~
trunk@47827 - 7.59s
patch 4           - 6.59s (87% of trunk)
patch 4+5      - 6.33s (83% of trunk)
~~~

---Files--------------------------------
0001-Remove-unused-prev_fiber-next_fiber-fields.patch (2.02 KB)
0002-Code-cleanup-in-fiber_switch-fiber_store.patch (4.79 KB)
0003-Small-code-cleanup.patch (1.16 KB)
0004-cont_save_thread-Sparse-copying-of-thread-data.patch (3.39 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)


-- 
https://bugs.ruby-lang.org/

[ruby-core:65736] [ruby-trunk - Feature #10341] [Open] Fiber switch performance improvements

[nobu]

Issue #10341 has been updated by Nobuyoshi Nakada.

Status changed from Closed to Open

I've missed this ticket, and r47964 caused compile error.

----------------------------------------
Feature #10341: Fiber switch performance improvements
https://bugs.ruby-lang.org/issues/10341#change-49474

* Author: Knut Franke
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
----------------------------------------
The attached patches increase performance of switches between Fibers by ~17% on my test system (Linux, gcc 4.8.2).

Patches 1-3 are purely cosmetic, but included here because submitting them separately would cause conflicts between the patch sets. If these are rejected, I can prepare stand-alone versions of 4/5.

Patch 4 yields the most significant performance increase (~12%). The benefit of patch 5 is lower, and it's a larger change; so this one could optionally be omitted.

~~~
require 'benchmark'

fib = Fiber.new do
	loop { Fiber.yield }
end

Benchmark.bm do |bm|
	3.times do
		results << bm.report { 10_000_000.times { fib.resume } }
	end
	avg = results.inject(:+) / results.size
        [avg]
end
~~~

Raw benchmarking results:

~~~
trunk@47827 - 7.59s
patch 4           - 6.59s (87% of trunk)
patch 4+5      - 6.33s (83% of trunk)
~~~

---Files--------------------------------
0001-Remove-unused-prev_fiber-next_fiber-fields.patch (2.02 KB)
0002-Code-cleanup-in-fiber_switch-fiber_store.patch (4.79 KB)
0003-Small-code-cleanup.patch (1.16 KB)
0004-cont_save_thread-Sparse-copying-of-thread-data.patch (3.39 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)


-- 
https://bugs.ruby-lang.org/

[ruby-core:65737] [ruby-trunk - Feature #10341] [Closed] Fiber switch performance improvements

[nobu]

Issue #10341 has been updated by Nobuyoshi Nakada.

Status changed from Open to Closed

Applied in changeset r47969.

----------
cont.c: fix compile error

* cont.c (rb_fiber_t): fix compile error caused by move to
  vm_core.h at r47964.  [Feature #10341]

----------------------------------------
Feature #10341: Fiber switch performance improvements
https://bugs.ruby-lang.org/issues/10341#change-49475

* Author: Knut Franke
* Status: Closed
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
----------------------------------------
The attached patches increase performance of switches between Fibers by ~17% on my test system (Linux, gcc 4.8.2).

Patches 1-3 are purely cosmetic, but included here because submitting them separately would cause conflicts between the patch sets. If these are rejected, I can prepare stand-alone versions of 4/5.

Patch 4 yields the most significant performance increase (~12%). The benefit of patch 5 is lower, and it's a larger change; so this one could optionally be omitted.

~~~
require 'benchmark'

fib = Fiber.new do
	loop { Fiber.yield }
end

Benchmark.bm do |bm|
	3.times do
		results << bm.report { 10_000_000.times { fib.resume } }
	end
	avg = results.inject(:+) / results.size
        [avg]
end
~~~

Raw benchmarking results:

~~~
trunk@47827 - 7.59s
patch 4           - 6.59s (87% of trunk)
patch 4+5      - 6.33s (83% of trunk)
~~~

---Files--------------------------------
0001-Remove-unused-prev_fiber-next_fiber-fields.patch (2.02 KB)
0002-Code-cleanup-in-fiber_switch-fiber_store.patch (4.79 KB)
0003-Small-code-cleanup.patch (1.16 KB)
0004-cont_save_thread-Sparse-copying-of-thread-data.patch (3.39 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)


-- 
https://bugs.ruby-lang.org/

[ruby-core:65745] [ruby-trunk - Feature #10341] [Open] Fiber switch performance improvements

[ko1]

Issue #10341 has been updated by Koichi Sasada.

Status changed from Closed to Open

on mswin32, the following simple script doesn't work.

```ruby
p Fiber.new{
  100
}.resume
```

```
#=>
C:/ko1/src/ruby/trunk/test.rb:1:in `p': method `inspect' called on
hidden T_OBJECT object (0x1ea6730 flags=0x1) (NotImplementedError)
        from C:/ko1/src/ruby/trunk/test.rb:1:in `<main>'
NMAKE : fatal error U1077: '.\miniruby.exe' : リターン コード '0x1'
Stop.
```


----------------------------------------
Feature #10341: Fiber switch performance improvements
https://bugs.ruby-lang.org/issues/10341#change-49481

* Author: Knut Franke
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
----------------------------------------
The attached patches increase performance of switches between Fibers by ~17% on my test system (Linux, gcc 4.8.2).

Patches 1-3 are purely cosmetic, but included here because submitting them separately would cause conflicts between the patch sets. If these are rejected, I can prepare stand-alone versions of 4/5.

Patch 4 yields the most significant performance increase (~12%). The benefit of patch 5 is lower, and it's a larger change; so this one could optionally be omitted.

~~~
require 'benchmark'

fib = Fiber.new do
	loop { Fiber.yield }
end

Benchmark.bm do |bm|
	3.times do
		results << bm.report { 10_000_000.times { fib.resume } }
	end
	avg = results.inject(:+) / results.size
        [avg]
end
~~~

Raw benchmarking results:

~~~
trunk@47827 - 7.59s
patch 4           - 6.59s (87% of trunk)
patch 4+5      - 6.33s (83% of trunk)
~~~

---Files--------------------------------
0001-Remove-unused-prev_fiber-next_fiber-fields.patch (2.02 KB)
0002-Code-cleanup-in-fiber_switch-fiber_store.patch (4.79 KB)
0003-Small-code-cleanup.patch (1.16 KB)
0004-cont_save_thread-Sparse-copying-of-thread-data.patch (3.39 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)


-- 
https://bugs.ruby-lang.org/

[ruby-core:65746] [ruby-trunk - Feature #10341] Fiber switch performance improvements

[ko1]

Issue #10341 has been updated by Koichi Sasada.


disable FIBER_USE_NATIVE works fine on mswin32.

----------------------------------------
Feature #10341: Fiber switch performance improvements
https://bugs.ruby-lang.org/issues/10341#change-49482

* Author: Knut Franke
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
----------------------------------------
The attached patches increase performance of switches between Fibers by ~17% on my test system (Linux, gcc 4.8.2).

Patches 1-3 are purely cosmetic, but included here because submitting them separately would cause conflicts between the patch sets. If these are rejected, I can prepare stand-alone versions of 4/5.

Patch 4 yields the most significant performance increase (~12%). The benefit of patch 5 is lower, and it's a larger change; so this one could optionally be omitted.

~~~
require 'benchmark'

fib = Fiber.new do
	loop { Fiber.yield }
end

Benchmark.bm do |bm|
	3.times do
		results << bm.report { 10_000_000.times { fib.resume } }
	end
	avg = results.inject(:+) / results.size
        [avg]
end
~~~

Raw benchmarking results:

~~~
trunk@47827 - 7.59s
patch 4           - 6.59s (87% of trunk)
patch 4+5      - 6.33s (83% of trunk)
~~~

---Files--------------------------------
0001-Remove-unused-prev_fiber-next_fiber-fields.patch (2.02 KB)
0002-Code-cleanup-in-fiber_switch-fiber_store.patch (4.79 KB)
0003-Small-code-cleanup.patch (1.16 KB)
0004-cont_save_thread-Sparse-copying-of-thread-data.patch (3.39 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)


-- 
https://bugs.ruby-lang.org/

[ruby-core:65749] Re: [ruby-trunk - Feature #10341] Fiber switch performance improvements

[Eric Wong]

Maybe this is a simple fix for win32, but I cannot test:

diff --git a/cont.c b/cont.c
index 739ec80..08acf40 100644
--- a/cont.c
+++ b/cont.c
@@ -1366,10 +1366,10 @@ fiber_store(rb_fiber_t *next_fib, rb_thread_t *th)
 	terminated_machine_stack.ptr = NULL;
 	terminated_machine_stack.size = 0;
     }
+#endif /* not _WIN32 */
     fib = th->fiber;
     if (fib->cont.argc == -1) rb_exc_raise(fib->cont.value);
     return fib->cont.value;
-#endif /* not _WIN32 */
 
 #else /* FIBER_USE_NATIVE */
     cont_save_machine_stack(th, &fib->cont);

[ruby-core:65751] [ruby-trunk - Feature #10341] Fiber switch performance improvements

[normalperson]

Issue #10341 has been updated by Eric Wong.


 Maybe this is a simple fix for win32, but I cannot test:
 
 diff --git a/cont.c b/cont.c
 index 739ec80..08acf40 100644
 --- a/cont.c
 +++ b/cont.c
 @@ -1366,10 +1366,10 @@ fiber_store(rb_fiber_t *next_fib, rb_thread_t *th)
  	terminated_machine_stack.ptr = NULL;
  	terminated_machine_stack.size = 0;
      }
 +#endif /* not _WIN32 */
      fib = th->fiber;
      if (fib->cont.argc == -1) rb_exc_raise(fib->cont.value);
      return fib->cont.value;
 -#endif /* not _WIN32 */
  
  #else /* FIBER_USE_NATIVE */
      cont_save_machine_stack(th, &fib->cont);

----------------------------------------
Feature #10341: Fiber switch performance improvements
https://bugs.ruby-lang.org/issues/10341#change-49484

* Author: Knut Franke
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
----------------------------------------
The attached patches increase performance of switches between Fibers by ~17% on my test system (Linux, gcc 4.8.2).

Patches 1-3 are purely cosmetic, but included here because submitting them separately would cause conflicts between the patch sets. If these are rejected, I can prepare stand-alone versions of 4/5.

Patch 4 yields the most significant performance increase (~12%). The benefit of patch 5 is lower, and it's a larger change; so this one could optionally be omitted.

~~~
require 'benchmark'

fib = Fiber.new do
	loop { Fiber.yield }
end

Benchmark.bm do |bm|
	3.times do
		results << bm.report { 10_000_000.times { fib.resume } }
	end
	avg = results.inject(:+) / results.size
        [avg]
end
~~~

Raw benchmarking results:

~~~
trunk@47827 - 7.59s
patch 4           - 6.59s (87% of trunk)
patch 4+5      - 6.33s (83% of trunk)
~~~

---Files--------------------------------
0001-Remove-unused-prev_fiber-next_fiber-fields.patch (2.02 KB)
0002-Code-cleanup-in-fiber_switch-fiber_store.patch (4.79 KB)
0003-Small-code-cleanup.patch (1.16 KB)
0004-cont_save_thread-Sparse-copying-of-thread-data.patch (3.39 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)


-- 
https://bugs.ruby-lang.org/

[ruby-core:65754] [ruby-trunk - Feature #10341] Fiber switch performance improvements

[ko1]

Issue #10341 has been updated by Koichi Sasada.


Eric Wong wrote:
> Maybe this is a simple fix for win32, but I cannot test:

Thank you. Now, it is working. I'm running test-all now.

----------------------------------------
Feature #10341: Fiber switch performance improvements
https://bugs.ruby-lang.org/issues/10341#change-49487

* Author: Knut Franke
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
----------------------------------------
The attached patches increase performance of switches between Fibers by ~17% on my test system (Linux, gcc 4.8.2).

Patches 1-3 are purely cosmetic, but included here because submitting them separately would cause conflicts between the patch sets. If these are rejected, I can prepare stand-alone versions of 4/5.

Patch 4 yields the most significant performance increase (~12%). The benefit of patch 5 is lower, and it's a larger change; so this one could optionally be omitted.

~~~
require 'benchmark'

fib = Fiber.new do
	loop { Fiber.yield }
end

Benchmark.bm do |bm|
	3.times do
		results << bm.report { 10_000_000.times { fib.resume } }
	end
	avg = results.inject(:+) / results.size
        [avg]
end
~~~

Raw benchmarking results:

~~~
trunk@47827 - 7.59s
patch 4           - 6.59s (87% of trunk)
patch 4+5      - 6.33s (83% of trunk)
~~~

---Files--------------------------------
0001-Remove-unused-prev_fiber-next_fiber-fields.patch (2.02 KB)
0002-Code-cleanup-in-fiber_switch-fiber_store.patch (4.79 KB)
0003-Small-code-cleanup.patch (1.16 KB)
0004-cont_save_thread-Sparse-copying-of-thread-data.patch (3.39 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)


-- 
https://bugs.ruby-lang.org/

[ruby-core:65758] [ruby-trunk - Feature #10341] Fiber switch performance improvements

[ko1]

Issue #10341 has been updated by Koichi Sasada.


It works fine!

Thank you.


----------------------------------------
Feature #10341: Fiber switch performance improvements
https://bugs.ruby-lang.org/issues/10341#change-49491

* Author: Knut Franke
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
----------------------------------------
The attached patches increase performance of switches between Fibers by ~17% on my test system (Linux, gcc 4.8.2).

Patches 1-3 are purely cosmetic, but included here because submitting them separately would cause conflicts between the patch sets. If these are rejected, I can prepare stand-alone versions of 4/5.

Patch 4 yields the most significant performance increase (~12%). The benefit of patch 5 is lower, and it's a larger change; so this one could optionally be omitted.

~~~
require 'benchmark'

fib = Fiber.new do
	loop { Fiber.yield }
end

Benchmark.bm do |bm|
	3.times do
		results << bm.report { 10_000_000.times { fib.resume } }
	end
	avg = results.inject(:+) / results.size
        [avg]
end
~~~

Raw benchmarking results:

~~~
trunk@47827 - 7.59s
patch 4           - 6.59s (87% of trunk)
patch 4+5      - 6.33s (83% of trunk)
~~~

---Files--------------------------------
0001-Remove-unused-prev_fiber-next_fiber-fields.patch (2.02 KB)
0002-Code-cleanup-in-fiber_switch-fiber_store.patch (4.79 KB)
0003-Small-code-cleanup.patch (1.16 KB)
0004-cont_save_thread-Sparse-copying-of-thread-data.patch (3.39 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)


-- 
https://bugs.ruby-lang.org/

[ruby-core:65779] [ruby-trunk - Feature #10341] Fiber switch performance improvements

[Knut.Franke]

Issue #10341 has been updated by Knut Franke.


D'oh. Thanks for fixing the win32/non-native issues.

And great to see this included. :-)

----------------------------------------
Feature #10341: Fiber switch performance improvements
https://bugs.ruby-lang.org/issues/10341#change-49515

* Author: Knut Franke
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
----------------------------------------
The attached patches increase performance of switches between Fibers by ~17% on my test system (Linux, gcc 4.8.2).

Patches 1-3 are purely cosmetic, but included here because submitting them separately would cause conflicts between the patch sets. If these are rejected, I can prepare stand-alone versions of 4/5.

Patch 4 yields the most significant performance increase (~12%). The benefit of patch 5 is lower, and it's a larger change; so this one could optionally be omitted.

~~~
require 'benchmark'

fib = Fiber.new do
	loop { Fiber.yield }
end

Benchmark.bm do |bm|
	3.times do
		results << bm.report { 10_000_000.times { fib.resume } }
	end
	avg = results.inject(:+) / results.size
        [avg]
end
~~~

Raw benchmarking results:

~~~
trunk@47827 - 7.59s
patch 4           - 6.59s (87% of trunk)
patch 4+5      - 6.33s (83% of trunk)
~~~

---Files--------------------------------
0001-Remove-unused-prev_fiber-next_fiber-fields.patch (2.02 KB)
0002-Code-cleanup-in-fiber_switch-fiber_store.patch (4.79 KB)
0003-Small-code-cleanup.patch (1.16 KB)
0004-cont_save_thread-Sparse-copying-of-thread-data.patch (3.39 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)
0005-Optimize-fiber_switch-callees.patch (13.9 KB)


-- 
https://bugs.ruby-lang.org/