Ruby Issue Tracking System

04/12/2023

09:55 PM Ruby Bug #19594 (Feedback): Cannot statically compile 3.0.5 on MacOS 12.6 x86_64

I'm triggering the compilation using RVM. A regular, non static compilation works, but I want to generate a cacheable binary to use inside CI.
Here is the config log:
brodock (Gabriel Mazetto)

03/16/2023

03:45 PM Ruby Bug #19412: Socket starts queueing and not responding after a certain amount of requests

Some other updates. I've been trying to undestand the `TIME_WAIT` and why it does behave the way it doesn on MacOS (but not on Linux).
This response got me ideas to try setting `linger` on:
https://stackoverflow.com/questions/3757289/wh... brodock (Gabriel Mazetto)

11:32 AM Ruby Bug #19412: Socket starts queueing and not responding after a certain amount of requests

when the pause happens it seems the socket is still kept alive, based on netstat:
(there is a huge list of those):
```
tcp4 0 0 localhost.http-alt localhost.56818 TIME_WAIT
tcp4 0 0 localhost.ht... brodock (Gabriel Mazetto)

11:15 AM Ruby Bug #19412: Socket starts queueing and not responding after a certain amount of requests

@jeremyevans0 I'm new to debugging C code. Your idea on filedescriptors seems to to be somewhat spot on.
I'm not sure if this is the right way to debug this or not, but I managed to capture "Filesystem activity" through MacOS instrum... brodock (Gabriel Mazetto)

03/15/2023

03:57 PM Ruby Bug #19412: Socket starts queueing and not responding after a certain amount of requests

@jeremyevans0 I've tested again in MacOS system provided ruby version:
```
ruby --version
Could not... brodock (Gabriel Mazetto)

03:33 PM Ruby Bug #19412: Socket starts queueing and not responding after a certain amount of requests

I've also tried to build something similar to "hey" in ruby and couldn´t make it crash (this is likely because of the GVL, we can´t get real concurrency):
```ruby
require 'bundler/inline'
gemfile do
source 'https://rubygems.or... brodock (Gabriel Mazetto)

03:31 PM Ruby Bug #19412: Socket starts queueing and not responding after a certain amount of requests

I've went back to my Linux machine and tried to reproduce the problem.
Using Ruby 3.0 (from the package manager), I got to make it crash only using some decent concurrency (100) and running it for longer time:
```
brodock@pop-os:~/Proj... brodock (Gabriel Mazetto)

03/14/2023

06:33 PM Ruby Bug #19412: Socket starts queueing and not responding after a certain amount of requests

@jeremyevans0
running apache benchmark with `-c1` does show some of the behavior. It will go from 0 to somethign around 16000 in 4 seconds and get stuck there, see a 3x run log:
```
ab -n 20000 -c 1 http://127.0.0.1:8080/ ... brodock (Gabriel Mazetto)

03/01/2023

06:14 PM Ruby Bug #19412: Socket starts queueing and not responding after a certain amount of requests

@jeremyevans0 yes, it behaves the same regarding the max amount of requests it can handle:
```
$ ab -n 20000 -c 50 http://127.0.0.1:8080/
This is ApacheBench, Version 2.3 <$Revision: 1901567 $>
Copyright 1996 Adam Twiss, Zeus Tec... brodock (Gabriel Mazetto)

02/03/2023

11:45 PM Ruby Bug #18940: Ruby Ractor fails with IOError when handling higher concurrency

There is a chance that the route problem is related to #19412 brodock (Gabriel Mazetto)