Ruby Issue Tracking System

08/09/2024

08:31 AM Ruby Bug #20634: ruby uses 1/2 (7 out of 16) cores for 16 ractors with RUBY_MAX_CPU=16 environment variable set

I just checked - the problem doesn't repro-es on HEAD (ruby 3.4.0dev (2024-08-09T03:16:23Z master f57167d338) [x86_64-linux])
Could you close it ? skorobogatydmitry (Dmitry Skorobogaty)

07/13/2024

09:09 PM Ruby Bug #20634 (Closed): ruby uses 1/2 (7 out of 16) cores for 16 ractors with RUBY_MAX_CPU=16 environment variable set

It's a cont for #20618, feel free to close this one and reopen the original bug.
According to `top`, the below code uses 7/16 cores (700%) of my AMD Ryzen 7 5800HS:
```
#!/usr/bin/env ruby
16.times {
Ractor.new {
10_000.d... skorobogatydmitry (Dmitry Skorobogaty)

07/08/2024

08:41 PM Ruby Bug #20618 (Closed): ruby uses 1/2 (7 out of 16) cores for 16 ractors

According to `top`, the below code uses 7/16 cores (700%) of my AMD Ryzen 7 5800HS:
```
#!/usr/bin/env ruby
16.times {
Ractor.new {
10_000.downto(1) { |i|
100_000.downto(1) { |j|
i * j
}
}
}
}... skorobogatydmitry (Dmitry Skorobogaty)