Hello,

My OS is ubuntu 14.04 64bit, and installed erlang from source with version R16B 
as following:
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ubuntu@riak1:~/riak-2.0.4/dev$ erl
Erlang R16B (erts-5.10.1) [source] [64-bit] [smp:4:4] [async-threads:10] 
[kernel-poll:false] [dtrace]

Eshell V5.10.1  (abort with ^G)
1> 
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I downloaded riak-2.0.4 source and compile it successfully, then do following:
>make devrel DEVNODES=2
>cd dev
>dev1/bin/riak start
!!!!
!!!! WARNING: ulimit -n is 1024; 65536 is the recommended minimum.
!!!!
riak failed to start within 15 seconds,
see the output of 'riak console' for more information.
If you want to wait longer, set the environment variable
WAIT_FOR_ERLANG to the number of seconds to wait.
ubuntu@riak1:~/riak-2.0.4/dev$ dev1/bin/riak console
config is OK
-config 
/home/ubuntu/riak-2.0.4/dev/dev1/data/generated.configs/app.2015.02.05.17.26.32.config
 -args_file 
/home/ubuntu/riak-2.0.4/dev/dev1/data/generated.configs/vm.2015.02.05.17.26.32.args
 -vm_args 
/home/ubuntu/riak-2.0.4/dev/dev1/data/generated.configs/vm.2015.02.05.17.26.32.args
!!!!
!!!! WARNING: ulimit -n is 1024; 65536 is the recommended minimum.
!!!!
Exec:  /home/ubuntu/riak-2.0.4/dev/dev1/bin/../erts-5.10.1/bin/erlexec -boot 
/home/ubuntu/riak-2.0.4/dev/dev1/bin/../releases/2.0.4/riak               
-config 
/home/ubuntu/riak-2.0.4/dev/dev1/data/generated.configs/app.2015.02.05.17.26.32.config
 -args_file 
/home/ubuntu/riak-2.0.4/dev/dev1/data/generated.configs/vm.2015.02.05.17.26.32.args
 -vm_args 
/home/ubuntu/riak-2.0.4/dev/dev1/data/generated.configs/vm.2015.02.05.17.26.32.args
              -pa /home/ubuntu/riak-2.0.4/dev/dev1/bin/../lib/basho-patches -- 
console
Root: /home/ubuntu/riak-2.0.4/dev/dev1/bin/..
bad scheduling option -sfwi
Usage: beam.smp [flags] [ -- [init_args] ]
The flags are:

-a size     suggested stack size in kilo words for threads
            in the async-thread pool, valid range is [16-8192]
-A number   set number of threads in async thread pool,
            valid range is [0-1024]
-B[c|d|i]   c to have Ctrl-c interrupt the Erlang shell,
            d (or no extra option) to disable the break
            handler, i to ignore break signals
-c          disable continuous date/time correction with
            respect to uptime
-d          don't write a crash dump for internally detected errors
            (halt(String) will still produce a crash dump)
-fn[u|a|l]  Control how filenames are interpreted
-hms size   set minimum heap size in words (default 233)
-hmbs size  set minimum binary virtual heap size in words (default 32768)
-K boolean  enable or disable kernel poll
-n[s|a|d]   Control behavior of signals to ports
            Note that this flag is deprecated!
-M<X> <Y>   memory allocator switches,
            see the erts_alloc(3) documentation for more info.
-pc <set>   Control what characters are considered printable (default latin1)
-P number   set maximum number of processes on this node,
            valid range is [1024-134217727]
-Q number   set maximum number of ports on this node,
            valid range is [1024-134217727]
-R number   set compatibility release number,
            valid range [14-16]
-r          force ets memory block to be moved on realloc
-rg amount  set reader groups limit
-sbt type   set scheduler bind type, valid types are:
-stbt type  u|ns|ts|ps|s|nnts|nnps|tnnps|db
-sbwt val   set scheduler busy wait threshold, valid values are:
            none|very_short|short|medium|long|very_long.
-scl bool   enable/disable compaction of scheduler load,
            see the erl(1) documentation for more info.
-sct cput   set cpu topology,
            see the erl(1) documentation for more info.
-sws val    set scheduler wakeup strategy, valid values are:
            default|legacy.
-swt val    set scheduler wakeup threshold, valid values are:
            very_low|low|medium|high|very_high.
-sss size   suggested stack size in kilo words for scheduler threads,
            valid range is [4-8192]
-spp Bool   set port parallelism scheduling hint
-S n1:n2    set number of schedulers (n1), and number of
            schedulers online (n2), valid range for both
            numbers are [1-1024]
-t size     set the maximum number of atoms the emulator can handle
            valid range is [8192-0]
-T number   set modified timing level,
            valid range is [0-9]
-V          print Erlang version
-v          turn on chatty mode (GCs will be reported etc)
-W<i|w>     set error logger warnings mapping,
            see error_logger documentation for details
-zdbbl size set the distribution buffer busy limit in kilobytes
            valid range is [1-2097151]

Note that if the emulator is started with erlexec (typically
from the erl script), these flags should be specified with +.

                                          
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