Building the CLI gives a out of memory exception

[davidfowl]

On OSX El Capitan.

~/dev/cli
*** Testing stage2... ***
Publishing E2E for DNXCore,Version=v5.0/osx.10.10-x64
Compiling Microsoft.Extensions.DependencyModel for DNXCore,Version=v5.0

Unhandled Exception: OutOfMemoryException.
Copy From: /Users/dfowler/dev/cli/artifacts/tests/Microsoft.Extensions.DependencyModel.dll
       To: /Users/dfowler/dev/cli/artifacts/osx.10.10-x64/stage2/bin/
Copy From: /Users/dfowler/dev/cli/artifacts/tests/Microsoft.Extensions.DependencyModel.pdb
       To: /Users/dfowler/dev/cli/artifacts/osx.10.10-x64/stage2/bin/

Compilation failed.
    0 Warning(s)
    0 Error(s)

Time elapsed 00:00:01.3028968

Published 0/1 projects successfully

[TheRealPiotrP]

I'm seeing the same. This only started yesterday and only repros on el cap. Exception is getting swallowed so no idea where this is coming from...

[davidfowl]

So 2 things:

• why is the ci passing?
• can we revert the change that is causing it?

[TheRealPiotrP]

CI is not on El Cap yet. Have you identified the offending PR?

[davidfowl]

F# support PR is what makes it fail

/cc @KevinRansom @enricosada

[enricosada]

I have not added an E2E test for fsharp.

I cannot repro. No El cap locally in OS X

[brthor]

We are seeing this our VSO builds for OS X.

Relevant Error:

2015-12-23T09:18:53.228Z: Publishing �[33mE2E�[39m for �[33mDNXCore,Version=v5.0�[39m/�[33mosx.10.10-x64�[39m
2015-12-23T09:18:54.069Z: Compiling �[33mMicrosoft.Extensions.DependencyModel�[39m for �[33mDNXCore,Version=v5.0�[39m
2015-12-23T09:18:54.692Z: 
2015-12-23T09:18:54.692Z: Unhandled Exception: OutOfMemoryException.

This seems to have appeared with the Server GC change to CoreHost.
PR dotnet/cli#638

@schellap

[schellap]

Taking a look

[schellap]

The PR dotnet/cli#658 undoes SERVER_GC change for CLI which causes this problem.

We need to resolve #4567 to enable SERVER_GC by default [OR] at least we should have a temporary solution of disabling SERVER_GC using an environment flag, so VSO can set this variable to switch off. Otherwise it is enabled. How does that sound?

https://github.com/dotnet/cli/pull/658/files

[schellap]

@davidfowl, to unblock just flip the bit.

https://github.com/dotnet/cli/blob/504e109947865d98bb87b1dec4c7d8f5daf0f8fe/src/corehost/src/main.cpp#L130

Set to "0"

[gkhanna79]

@janvorli Can you please take a look to understand why enabling Server GC would trigger OOM on OSX Elcapitan?

[kouvel]

I'll take a look at this