Backport #9470

[ruby-core:59728] Ruby 2.1.0 in Production: known bugs and patches

Added by hsbt (Hiroshi SHIBATA) over 6 years ago. Updated over 6 years ago.



reminder memo: copy from ruby-core:59728. original author is tmm1

Last week, we upgraded the rails app to ruby 2.1.0 in production.
While testing the new build for rollout, we ran into a number of bugs. Most of
these have been fixed on trunk already, but I've documented them below to help
anyone else who might be testing ruby 2.1 in production.

@naruse I think we should backport these patches to the ruby_2_1 branch and
release 2.1.1 sooner rather than later, as some of the bugs are quite critical.
I'm happy to offer any assistance I can to expedite this process.

- Struct#send(:setter=, rhs) does not return rhs
  #9353 (r44501)
  breaks the faraday gem

- Array#uniq behavior change
  #9340 (r44512)
  affects the sass gem

- Timeout behavior change
  #9354 (r44517, r44518, r44519)
  #9380 (r44523)
  breaks the faraday gem

- [BUG] assertion failure in socket.c
  #9352 (r44490, r44496)
  breaks the excon gem

- segfault in method() usage
  #9334, #9313, #9310, #9326, #9337
  #9315 (r44455, r44458, r44510, r44527, r44552, r44553)
  segv inside activesupport4 and other gems

- Hash lookup with #hash and #eql broken
  #9381 (r44525, r44534, r44537)

- bigdecimal division issue
  affects some payment processing gems
  workaround patch by @phasis:

- SizedQueue not working
  #9302, #9343, #9396
  patches by @normalperson:

In addition to the bugfix patches above, we're running the following
performance patches in production. These have proven quite stable in our
environment, so I encourage you to try them if you're running a large ruby app.

- funny-falcon's st.c density patch

- funny-falcon's st.c pool allocator

- funny-falcon's method cache patch
  proposed for trunk in #9262

- optimized Hash#[] and Hash#[]= with string literals
  merged to trunk in #9382 (r44551)

Aside from the bugs above, our upgrade to 2.1 was very smooth. I'm happy to
report that is now running faster (and with less GC overhead) than
ever before.

Updated by hsbt (Hiroshi SHIBATA) over 6 years ago

  • Description updated (diff)

Updated by naruse (Yui NARUSE) over 6 years ago

  • Status changed from Open to Closed

All bug fixes are merged in r44847

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