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January 2025

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[ruby-dev:52083] I RECORDED YOU!
by ruby-dev＠ruby-lang.org 17 Oct '25

17 Oct '25

Hello there! Unfortunately, there are some bad news for you. Some time ago your device was infected with my private trojan, R.A.T (Remote Administration Tool), if you want to find out more about it simply use Google. My trojan allowed me to access your files, accounts and your camera. Check the sender of this email, I have sent it from your email account. To make sure you read this email, you will receive it multiple times. You truly enjoy checking out porn websites and watching dirty videos, while having a lot of kinky fun. I RECORDED YOU (through your camera) SATISFYING YOURSELF! After that I removed my malware to not leave any traces. If you still doubt my serious intentions, it only takes couple mouse clicks to share the video of you with your friends, relatives, all email contacts, on social networks, the darknet and to publish all your files. All you need is $1800 USD in Bitcoin (BTC) transfer to my account. After the transaction is successful, I will proceed to delete everything. Be sure, I keep my promises. You can easily buy Bitcoin (BTC) here: https://cex.io/buy-bitcoins https://nexo.com/buy-crypto/bitcoin-btc https://bitpay.com/buy-bitcoin/?crypto=BTC https://paybis.com/ https://invity.io/buy-crypto Or simply google other exchanger. After that send the Bitcoin (BTC) directly to my wallet, or install the free software: Atomicwallet, or: Exodus wallet, then receive and send to mine. My Bitcoin (BTC) address is: 13HAreeSVjLf3aueZXf9zmrS1FmvkF4opS Yes, that's how the address looks like, copy and paste my address, it's (cAsE-sEnSEtiVE). You are given not more than 3 days after you have opened this email. As I got access to this email account, I will know if this email has already been read. Everything will be carried out based on fairness. An advice from me, regularly change all your passwords to your accounts and update your device with newest security patches.

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[ruby-dev:52086] [Ruby master Bug#20489] Ractor behavior strange in ruby master
by nekoyama32767 (Jinsong Yu) 10 Jan '25

10 Jan '25

Issue #20489 has been reported by nekoyama32767 (Jinsong Yu). ---------------------------------------- Bug #20489: Ractor behavior strange in ruby master https://bugs.ruby-lang.org/issues/20489 * Author: nekoyama32767 (Jinsong Yu) * Status: Open * ruby -v: ruby 3.4.0dev (2024-05-14T01:58:31Z master 9d01f657b3) [x86_64-linux] * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- This is a tarai program Run`./ruby tarai_ractor.rb 2 8` is to use 2 thread to run 8 times tarai function total, that means 4 times tarai for each ractor(thread). ``` GC.disable def split_len(len, split) ret = [] mod = len % split head = 0 tail = 0 split.times do |i| if head >= len break end k = 0 if i < mod then k = 1 end tail = tail + (len/split) + k ret.append(head...tail) head = tail end return ret end def ary_split(ary, split) return split_len(ary.length,split) end def item_check(item) if item[0] != nil 1 + item_check(item[0]) + item_check(item[1]) else 1 end end def tarai(x, y, z) = x <= y ? y : tarai(tarai(x-1, y, z), tarai(y-1, z, x), tarai(z-1, x, y)) times = ARGV[0].to_i split = ARGV[1].to_i p split_len(times, split) split_len(times, split).each.map do |sp| Ractor.new (sp) { s = _1 s.each do tarai(13, 7, 0) end } end.each(&:take) ``` The problem is in ruby 3.1.2 and ruby 3.3 `./ruby tarai_ractor.rb 1 1` has simiular execute time with `./ruby tarai_ractor.rb 8 8` because each thread only run 1 time of tarai function, like follow: ruby 3.1.2p20 (2022-04-12 revision 4491bb740a) [x86_64-linux]: ``` time ruby exp_ractor_tarai.rb 1 1 [0...1] <internal:ractor>:267: warning: Ractor is experimental, and the behavior may change in future versions of Ruby! Also there are many implementation issues. real 0m1.442s user 0m1.429s sys 0m0.014s time ruby exp_ractor_tarai.rb 8 8 [0...1, 1...2, 2...3, 3...4, 4...5, 5...6, 6...7, 7...8] <internal:ractor>:267: warning: Ractor is experimental, and the behavior may change in future versions of Ruby! Also there are many implementation issues. real 0m1.857s user 0m13.817s sys 0m0.041s ``` But in ruby master(ruby 3.4.0dev) ruby 3.4.0dev (2024-05-14T01:58:31Z master 9d01f657b3) [x86_64-linux] 1 ractor 1 tarai: ``` time ../ruby exp_ractor_tarai.rb 1 1 `RubyGems' were not loaded. `error_highlight' was not loaded. `did_you_mean' was not loaded. `syntax_suggest' was not loaded. [0...1] exp_ractor_tarai.rb:47: warning: Ractor is experimental, and the behavior may change in future versions of Ruby! Also there are many implementation issues. real 0m1.671s user 0m1.666s sys 0m0.005s ``` 8 ractor 8 tarai: ``` time ../ruby exp_ractor_tarai.rb 8 8 `RubyGems' were not loaded. `error_highlight' was not loaded. `did_you_mean' was not loaded. `syntax_suggest' was not loaded. [0...1, 1...2, 2...3, 3...4, 4...5, 5...6, 6...7, 7...8] exp_ractor_tarai.rb:47: warning: Ractor is experimental, and the behavior may change in future versions of Ruby! Also there are many implementation issues. real 0m18.408s user 1m58.659s sys 0m0.021s ``` And in ruby 3.4.0dev when run `time ../ruby exp_ractor_tarai.rb 16 16` 16 thread should be used in system monitoring while only 8 threads are used. Ruby 3.3 and Ruby 3.1.2 do not have this problem. ---Files-------------------------------- thead16_16.png (168 KB) thread16_8.png (165 KB) -- https://bugs.ruby-lang.org/

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