memory: unsupported and objects: unsupported

[sirius248]

I have rails 4.1.7 and ruby 2.0.0p643. Not sure this gem support ruby 2.0.0p643. Below is the result I got

$ bundle exec rake test:benchmark
Run options: --seed 19167

# Running:

ChatFeedTest#test_Public_feeds (274 ms warmup)
           wall_time: 16 ms
              memory: unsupported
             objects: unsupported
             gc_runs: 0
             gc_time: -80 ms
.FeedModelTest#test_creation (109 ms warmup)
           wall_time: 7 ms
              memory: unsupported
             objects: unsupported
             gc_runs: 0
             gc_time: 0 ms

[hadinishad]

This is also the case with Rails 4.2.3, ruby 2.2.2p95 (2015-04-13 revision 50295) [x86_64-linux]

[snyaggarwal]

any resolution on this?

[IamNaN]

Ping.

[miccarlson]

Really could use some help on this issue, so I can fine tune my project for Heroku.

[mustela]

Having the same issue... any clue what's going on?

[spochart]

I'm also having this same issue, is there anything to fix this on the horizon?

[khamusa]

The issue seems a bit old, but hopefully this will save someone else a bit of time...

The benchmark will only return data for memory and objects on MRI if it can find GC#malloc_allocated_size and GC#malloc_allocations, which are only defined if you compile ruby with a specific macro turned on (MALLOC_ALLOCATED_SIZE). I made a patch for ruby 2.4.0: https://gist.github.com/khamusa/57a7660a69c7021ea1c1dea92c73a0bc, and devising a similar patch for other versions shouldn't be hard...

Ideally we would also enable CALC_EXACT_MALLOC_SIZE, but doing so was causing my server to segfault...