Thread #<Thread:0x0055f52b8072f0> status=run priority=0
      /usr/local/lib/ruby/gems/2.2.0/gems/sigdump-0.2.4/lib/sigdump.rb:52:in `backtrace'
      /usr/local/lib/ruby/gems/2.2.0/gems/sigdump-0.2.4/lib/sigdump.rb:52:in `dump_backtrace'
      /usr/local/lib/ruby/gems/2.2.0/gems/sigdump-0.2.4/lib/sigdump.rb:34:in `block in dump_all_thread_backtrace'
      /usr/local/lib/ruby/gems/2.2.0/gems/sigdump-0.2.4/lib/sigdump.rb:33:in `each'
      /usr/local/lib/ruby/gems/2.2.0/gems/sigdump-0.2.4/lib/sigdump.rb:33:in `dump_all_thread_backtrace'
      /usr/local/lib/ruby/gems/2.2.0/gems/sigdump-0.2.4/lib/sigdump.rb:16:in `block in dump'
      /usr/local/lib/ruby/gems/2.2.0/gems/sigdump-0.2.4/lib/sigdump.rb:136:in `open'
      /usr/local/lib/ruby/gems/2.2.0/gems/sigdump-0.2.4/lib/sigdump.rb:136:in `_open_dump_path'
      /usr/local/lib/ruby/gems/2.2.0/gems/sigdump-0.2.4/lib/sigdump.rb:14:in `dump'
      /usr/local/lib/ruby/gems/2.2.0/gems/sigdump-0.2.4/lib/sigdump.rb:7:in `block in setup'
      /usr/local/lib/ruby/gems/2.2.0/gems/cool.io-1.5.0/lib/cool.io/loop.rb:87:in `call'
      /usr/local/lib/ruby/gems/2.2.0/gems/cool.io-1.5.0/lib/cool.io/loop.rb:87:in `run'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/engine.rb:199:in `run'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/supervisor.rb:570:in `run_engine'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/supervisor.rb:162:in `block in start'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/supervisor.rb:366:in `call'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/supervisor.rb:366:in `main_process'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/supervisor.rb:339:in `block in supervise'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/supervisor.rb:338:in `fork'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/supervisor.rb:338:in `supervise'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/supervisor.rb:156:in `start'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/command/fluentd.rb:173:in `<top (required)>'
      /usr/local/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:69:in `require'
      /usr/local/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:69:in `require'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/bin/fluentd:5:in `<top (required)>'
      /usr/local/bin/fluentd:23:in `load'
      /usr/local/bin/fluentd:23:in `<main>'
  Thread #<Thread:0x0055f52d1f3a88> status=sleep priority=0
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/output.rb:174:in `sleep'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/output.rb:174:in `wait'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/output.rb:174:in `cond_wait'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/output.rb:158:in `run'
  Thread #<Thread:0x0055f52d24d9c0> status=sleep priority=0
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/output.rb:174:in `sleep'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/output.rb:174:in `wait'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/output.rb:174:in `cond_wait'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/output.rb:158:in `run'
  Thread #<Thread:0x007f4a78d19b28> status=sleep priority=0
      /usr/local/lib/ruby/gems/2.2.0/gems/cool.io-1.5.0/lib/cool.io/loop.rb:88:in `run_once'
      /usr/local/lib/ruby/gems/2.2.0/gems/cool.io-1.5.0/lib/cool.io/loop.rb:88:in `run'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/plugin/in_tail.rb:294:in `run'
  Thread #<Thread:0x007f4a78d189f8> status=sleep priority=0
      /usr/local/lib/ruby/gems/2.2.0/gems/cool.io-1.5.0/lib/cool.io/loop.rb:88:in `run_once'
      /usr/local/lib/ruby/gems/2.2.0/gems/cool.io-1.5.0/lib/cool.io/loop.rb:88:in `run'
      /usr/local/lib/ruby/gems/2.2.0/gems/fluentd-0.12.37/lib/fluent/plugin/in_tail.rb:294:in `run'
  GC stat:
      count: 20657
      heap_allocated_pages: 760
      heap_sorted_length: 761
      heap_allocatable_pages: 0
      heap_available_slots: 309840
      heap_live_slots: 309700
      heap_free_slots: 140
      heap_final_slots: 0
      heap_marked_slots: 163569
      heap_swept_slots: 6739
      heap_eden_pages: 760
      heap_tomb_pages: 0
      total_allocated_pages: 760
      total_freed_pages: 0
      total_allocated_objects: 2999307058
      total_freed_objects: 2998997358
      malloc_increase_bytes: 33864
      malloc_increase_bytes_limit: 16777216
      minor_gc_count: 20584
      major_gc_count: 73
      remembered_wb_unprotected_objects: 2707
      remembered_wb_unprotected_objects_limit: 3768
      old_objects: 157612
      old_objects_limit: 303760
      oldmalloc_increase_bytes: 35192
      oldmalloc_increase_bytes_limit: 16777216
  Built-in objects:
   309,840: TOTAL
   139,578: T_STRING
    76,776: T_DATA
    39,278: T_ARRAY
    24,356: T_OBJECT
    12,293: T_HASH
    10,298: T_NODE
     4,477: T_CLASS
     1,122: T_REGEXP
       597: T_SYMBOL
       312: T_ICLASS
       298: T_MODULE
       199: T_FILE
       141: T_STRUCT
        59: T_RATIONAL
        34: FREE
         9: T_FLOAT
         8: T_BIGNUM
         4: T_MATCH
         1: T_COMPLEX