README.md in sigdump-0.2.2 vs README.md in sigdump-0.2.3

@@ -1,28 +1,45 @@
 # sigdump
 
+In short: *SIGQUIT of Java VM for Ruby.*
+
 Server applications (like Rails app) cause performance problems, deadlock or memory swapping from time to time. But it's painful to reproduce such kind of problems. If we can get information from a running process without restarting it, it's really helpful.
 
-`sigdump` gem installs a signal handler which dumps backtrace of running threads and number of allocated objects per class.
+`sigdump` gem installs a signal handler which dumps backtrace of running threads, number of allocated objects per class, and GC statistics.
 
-If GC profiler is enabled (`GC::Profiler.enable` is called), it also dumps GC statistics.
+If GC profiler is enabled (`GC::Profiler.enable` is called), it also dumps GC profiler reports.
 
 ## Install
 
 Just install one gem `sigdump` and require `sigdump/setup`:
 
-    gem 'sigdump', :require => 'sigdump/setup'
+```ruby
+gem 'sigdump', :require => 'sigdump/setup'
+```
 
+### Resque
+
+Because Resque traps `SIGCONT`, you need to change the signal to another signal such as TSTP.
+In environment.rb:
+
+```ruby
+# setup sigdump: https://github.com/frsyuki/sigdump
+ENV['SIGDUMP_SIGNAL'] = 'TSTP'
+require 'sigdump/setup'
+```
+
 ## Usage
 
 Send `SIGCONT` signal to dump backtrace and heap status to `/tmp/sigdump-<pid>.log`:
 
-    $ kill -CONT <pid>
+```shell
+$ kill -CONT <pid>
+```
 
 Set `SIGDUMP_SIGNAL` environment variable to change the signal (default: SIGCONT).
 
-Set `SIGDUMP_PATH` environment variable to change the output path (default: /tmp/sigdump-\<pid\>.log). You can set "-" here to dump to STDOUT, "+" to dump to STDERR.
+Set `SIGDUMP_PATH` environment variable to change the output path (default: /tmp/sigdump-\<pid\>.log). You can set "-" here to dump to STDOUT, or "+" to STDERR.
 
 ## Sample outout
 
     $ cat /tmp/sigdump-9218.log
     Sigdump at 2013-04-24 16:57:12 +0000 process 9218 (unicorn worker[3] -E staging -c /etc/unicorn/staging.rb -E staging)
@@ -41,9 +58,33 @@
           /srv/staging/current/vendor/bundle/ruby/1.9.1/gems/unicorn-4.3.1/lib/unicorn/http_server.rb:487:in `spawn_missing_workers'
           /srv/staging/current/vendor/bundle/ruby/1.9.1/gems/unicorn-4.3.1/lib/unicorn/http_server.rb:137:in `start'
           /srv/staging/current/vendor/bundle/ruby/1.9.1/gems/unicorn-4.3.1/bin/unicorn:121:in `<top (required)>'
           /srv/staging/current/vendor/bundle/ruby/1.9.1/bin/unicorn:23:in `load'
           /srv/staging/current/vendor/bundle/ruby/1.9.1/bin/unicorn:23:in `<main>'
+      GC stat:
+          count: 34
+          heap_allocated_pages: 1366
+          heap_sorted_length: 1368
+          heap_allocatable_pages: 0
+          heap_available_slots: 556777
+          heap_live_slots: 551708
+          heap_free_slots: 5069
+          heap_final_slots: 0
+          heap_marked_slots: 363350
+          heap_swept_slots: 58807
+          heap_eden_pages: 1366
+          heap_tomb_pages: 0
+          total_allocated_pages: 1367
+          total_freed_pages: 1
+          total_allocated_objects: 2438499
+          total_freed_objects: 1886791
+          malloc_increase_bytes: 650416
+          malloc_increase_bytes_limit: 16777216
+          minor_gc_count: 25
+          major_gc_count: 9
+          remembered_wb_unprotected_objects: 5122
+          remembered_wb_unprotected_objects_limit: 5222
+          old_objects: 348964
       Built-in objects:
        367,492: TOTAL
        208,193: T_STRING
         61,817: T_ARRAY
         37,343: T_DATA