* [ruby-core:114950] [Ruby master Bug#19911] require slower with ruby/3.2.2
@ 2023-10-05 17:36 ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian) via ruby-core
2023-10-05 17:37 ` [ruby-core:114951] " ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian) via ruby-core
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian) via ruby-core @ 2023-10-05 17:36 UTC (permalink / raw
To: ruby-core; +Cc: ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian)
Issue #19911 has been reported by ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian).
----------------------------------------
Bug #19911: require slower with ruby/3.2.2
https://bugs.ruby-lang.org/issues/19911
* Author: ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.2.2 (2023-03-30 revision e51014f9c0) [x86_64-linux]
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN
----------------------------------------
we tested require with ruby 3.2.2 and ruby 2.7.2
and its seems to slowdown considerabily
the test case:
Ruby 3.2.2
command: time ruby -e 'require "json"'
time: user=0.19s system=0.02s cpu=99% total=0.204
Ruby 2.7.2
command: time ruby -e 'require "json"'
time: user=0.05s system=0.02s cpu=98% total=0.064
We also saw the same slowdown with File.read
Not sure that is casuing the slowdown in require also
On side note we saw three times more lstat on strace with the above command on ruby/3.2.2.Not sure if that is the root cause
I also tested with multiple versions of ruby 2* starting with ruby/2.3.1 and it doesnt seem to have this slowdown
--
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^ permalink raw reply [flat|nested] 4+ messages in thread
* [ruby-core:114951] [Ruby master Bug#19911] require slower with ruby/3.2.2
2023-10-05 17:36 [ruby-core:114950] [Ruby master Bug#19911] require slower with ruby/3.2.2 ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian) via ruby-core
@ 2023-10-05 17:37 ` ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian) via ruby-core
2023-10-05 21:14 ` [ruby-core:114952] " ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian) via ruby-core
2023-10-05 22:28 ` [ruby-core:114954] " k0kubun (Takashi Kokubun) via ruby-core
2 siblings, 0 replies; 4+ messages in thread
From: ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian) via ruby-core @ 2023-10-05 17:37 UTC (permalink / raw
To: ruby-core; +Cc: ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian)
Issue #19911 has been updated by ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian).
Also i have seen this happeneing in other versions/systems one other thing i tested was with ubuntu.
----------------------------------------
Bug #19911: require slower with ruby/3.2.2
https://bugs.ruby-lang.org/issues/19911#change-104821
* Author: ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.2.2 (2023-03-30 revision e51014f9c0) [x86_64-linux]
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN
----------------------------------------
we tested require with ruby 3.2.2 and ruby 2.7.2
and its seems to slowdown considerabily
the test case:
Ruby 3.2.2
command: time ruby -e 'require "json"'
time: user=0.19s system=0.02s cpu=99% total=0.204
Ruby 2.7.2
command: time ruby -e 'require "json"'
time: user=0.05s system=0.02s cpu=98% total=0.064
We also saw the same slowdown with File.read
Not sure that is casuing the slowdown in require also
On side note we saw three times more lstat on strace with the above command on ruby/3.2.2.Not sure if that is the root cause
I also tested with multiple versions of ruby 2* starting with ruby/2.3.1 and it doesnt seem to have this slowdown
--
https://bugs.ruby-lang.org/
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^ permalink raw reply [flat|nested] 4+ messages in thread
* [ruby-core:114952] [Ruby master Bug#19911] require slower with ruby/3.2.2
2023-10-05 17:36 [ruby-core:114950] [Ruby master Bug#19911] require slower with ruby/3.2.2 ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian) via ruby-core
2023-10-05 17:37 ` [ruby-core:114951] " ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian) via ruby-core
@ 2023-10-05 21:14 ` ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian) via ruby-core
2023-10-05 22:28 ` [ruby-core:114954] " k0kubun (Takashi Kokubun) via ruby-core
2 siblings, 0 replies; 4+ messages in thread
From: ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian) via ruby-core @ 2023-10-05 21:14 UTC (permalink / raw
To: ruby-core; +Cc: ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian)
Issue #19911 has been updated by ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian).
On further debugging we found that the following is speeding up the require and file read operation
time ruby --disable-gems -e 'require "json"' 05:13:22 PM
user=0.04s system=0.01s cpu=99% total=0.051
----------------------------------------
Bug #19911: require slower with ruby/3.2.2
https://bugs.ruby-lang.org/issues/19911#change-104823
* Author: ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.2.2 (2023-03-30 revision e51014f9c0) [x86_64-linux]
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN
----------------------------------------
we tested require with ruby 3.2.2 and ruby 2.7.2
and its seems to slowdown considerabily
the test case:
Ruby 3.2.2
command: time ruby -e 'require "json"'
time: user=0.19s system=0.02s cpu=99% total=0.204
Ruby 2.7.2
command: time ruby -e 'require "json"'
time: user=0.05s system=0.02s cpu=98% total=0.064
We also saw the same slowdown with File.read
Not sure that is casuing the slowdown in require also
On side note we saw three times more lstat on strace with the above command on ruby/3.2.2.Not sure if that is the root cause
I also tested with multiple versions of ruby 2* starting with ruby/2.3.1 and it doesnt seem to have this slowdown
--
https://bugs.ruby-lang.org/
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^ permalink raw reply [flat|nested] 4+ messages in thread
* [ruby-core:114954] [Ruby master Bug#19911] require slower with ruby/3.2.2
2023-10-05 17:36 [ruby-core:114950] [Ruby master Bug#19911] require slower with ruby/3.2.2 ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian) via ruby-core
2023-10-05 17:37 ` [ruby-core:114951] " ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian) via ruby-core
2023-10-05 21:14 ` [ruby-core:114952] " ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian) via ruby-core
@ 2023-10-05 22:28 ` k0kubun (Takashi Kokubun) via ruby-core
2 siblings, 0 replies; 4+ messages in thread
From: k0kubun (Takashi Kokubun) via ruby-core @ 2023-10-05 22:28 UTC (permalink / raw
To: ruby-core; +Cc: k0kubun (Takashi Kokubun)
Issue #19911 has been updated by k0kubun (Takashi Kokubun).
Status changed from Open to Feedback
You're measuring a lot other things by using the `time` command to benchmark the script. It's more accurate to measure the time inside a script.
```
$ ruby -v -e 't = Time.new; require "json"; puts "%.3fs" % (Time.new - t)'
ruby 2.7.7p221 (2022-11-24 revision 168ec2b1e5) [x86_64-linux]
0.003s
$ ruby -v -e 't = Time.new; require "json"; puts "%.3fs" % (Time.new - t)'
ruby 3.2.2 (2023-03-30 revision e51014f9c0) [x86_64-linux]
0.003s
```
----------------------------------------
Bug #19911: require slower with ruby/3.2.2
https://bugs.ruby-lang.org/issues/19911#change-104826
* Author: ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian)
* Status: Feedback
* Priority: Normal
* ruby -v: ruby 3.2.2 (2023-03-30 revision e51014f9c0) [x86_64-linux]
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN
----------------------------------------
we tested require with ruby 3.2.2 and ruby 2.7.2
and its seems to slowdown considerabily
the test case:
Ruby 3.2.2
command: time ruby -e 'require "json"'
time: user=0.19s system=0.02s cpu=99% total=0.204
Ruby 2.7.2
command: time ruby -e 'require "json"'
time: user=0.05s system=0.02s cpu=98% total=0.064
We also saw the same slowdown with File.read
Not sure that is casuing the slowdown in require also
On side note we saw three times more lstat on strace with the above command on ruby/3.2.2.Not sure if that is the root cause
I also tested with multiple versions of ruby 2* starting with ruby/2.3.1 and it doesnt seem to have this slowdown
--
https://bugs.ruby-lang.org/
______________________________________________
ruby-core mailing list -- ruby-core@ml.ruby-lang.org
To unsubscribe send an email to ruby-core-leave@ml.ruby-lang.org
ruby-core info -- https://ml.ruby-lang.org/mailman3/postorius/lists/ruby-core.ml.ruby-lang.org/
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2023-10-05 17:36 [ruby-core:114950] [Ruby master Bug#19911] require slower with ruby/3.2.2 ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian) via ruby-core
2023-10-05 17:37 ` [ruby-core:114951] " ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian) via ruby-core
2023-10-05 21:14 ` [ruby-core:114952] " ashwinsurya14 (Ashwin Surya Kumar Sivasubramanian) via ruby-core
2023-10-05 22:28 ` [ruby-core:114954] " k0kubun (Takashi Kokubun) via ruby-core
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