Trace allocations in amazon provider refresh specs

profile_amazon_refresh_retained_allocations.diff

From 19f131f47fc27939374253a936e10a9d7cbe3a3b Mon Sep 17 00:00:00 2001
From: Joe Rafaniello <[email protected]>
Date: Wed, 16 Nov 2016 14:09:45 -0500
Subject: [PATCH] WIP

---
 .../amazon/cloud_manager/refresher_spec.rb         | 67 ++++++++++++++++++++--
 1 file changed, 63 insertions(+), 4 deletions(-)

diff --git a/spec/models/manageiq/providers/amazon/cloud_manager/refresher_spec.rb b/spec/models/manageiq/providers/amazon/cloud_manager/refresher_spec.rb
index 5b3e2da..3f8eb38 100644
--- a/spec/models/manageiq/providers/amazon/cloud_manager/refresher_spec.rb
+++ b/spec/models/manageiq/providers/amazon/cloud_manager/refresher_spec.rb
@@ -1,8 +1,63 @@
+    def iter(n)
+      if n > 0
+        1.times{
+          iter(n-1)
+        }
+      else
+        # null code
+      end
+    end
+
+    def gc
+      iter(100)
+      GC.start
+      GC.start
+    end
+
+    def start_objspace_trace
+      require "objspace"
+      ObjectSpace.trace_object_allocations_start
+    end
+
+    def stop_objspace_trace
+      ObjectSpace.trace_object_allocations_stop
+      gc
+      gc
+      gc
+    end
+
+    def log_retained_allocations(key = :line)
+      current_file = File.basename(__FILE__)
+      object_hash = {}
+      ObjectSpace.each_object do |o|
+        sourcefile = ObjectSpace.allocation_sourcefile(o) || ""
+        next if sourcefile.include?(current_file)
+
+        obj_key = "#{o.class.name}\t"
+        obj_key << sourcefile if [:line, :file, :path].include?(key)
+        obj_key << ":#{ObjectSpace.allocation_sourceline(o)}" if key == :line
+
+        object_hash[obj_key] ||= Hash.new { |h, _| h[:count] = 0; h[:memsize] = 0 }
+        object_hash[obj_key][:count] += 1
+        object_hash[obj_key][:memsize] += ObjectSpace.memsize_of(o)
+      end
+
+      object_hash.sort_by {|k, v| -v[:memsize]}[0..1000].each do |k, v|
+        puts "m: %11s | c: %7s | %s" %
+        [v[:memsize].to_s.gsub(/(\d)(?=(\d\d\d)+(?!\d))/, "\\1,"),
+         v[:count].to_s.gsub(/(\d)(?=(\d\d\d)+(?!\d))/, "\\1,"),
+        k ]
+      end
+    end
+
+start_objspace_trace
+
 require_relative "../aws_refresher_spec_common"
 
 describe ManageIQ::Providers::Amazon::CloudManager::Refresher do
   include AwsRefresherSpecCommon
 
+
   before(:each) do
     _guid, _server, zone = EvmSpecHelper.create_guid_miq_server_zone
     @ems = FactoryGirl.create(:ems_amazon, :zone => zone)
@@ -14,16 +69,20 @@ describe ManageIQ::Providers::Amazon::CloudManager::Refresher do
   end
 
   it "will perform a full refresh" do
-    2.times do # Run twice to verify that a second run with existing data does not change anything
+    #2.times do # Run twice to verify that a second run with existing data does not change anything
       @ems.reload
 
       VCR.use_cassette(described_class.name.underscore) do
         EmsRefresh.refresh(@ems)
         EmsRefresh.refresh(@ems.network_manager)
       end
-      @ems.reload
 
-      assert_common
-    end
+     @ems.reload
+#      @ems.send(:clear_association_cache)
+stop_objspace_trace
+gc
+log_retained_allocations
+      #assert_common
+    #end
   end
 end
-- 
2.7.3