diff --git a/lib/sidekiq/api.rb b/lib/sidekiq/api.rb
index 86a2c6a6..eb2d6cc1 100644
--- a/lib/sidekiq/api.rb
+++ b/lib/sidekiq/api.rb
@@ -472,12 +472,14 @@ module Sidekiq
   #
   #    workers = Sidekiq::Workers.new
   #    workers.size => 2
-  #    workers.each do |name, work|
-  #      # name is a unique identifier per worker
+  #    workers.each do |process_id, thread_id, work|
+  #      # process_id is a unique identifier per Sidekiq process
+  #      # thread_id is a unique identifier per thread
   #      # work is a Hash which looks like:
   #      # { 'queue' => name, 'run_at' => timestamp, 'payload' => msg }
   #      # run_at is an epoch Integer.
   #    end
+  #
   class Workers
     include Enumerable
 
@@ -491,12 +493,15 @@ module Sidekiq
           end
           next unless valid
           workers.each_pair do |tid, json|
-            yield tid, Sidekiq.load_json(json)
+            yield key, tid, Sidekiq.load_json(json)
           end
         end
       end
     end
 
+    # Note that #size is only as accurate as Sidekiq's heartbeat,
+    # which happens every 5 seconds.  It is NOT real-time.
+    #
     # Not very efficient if you have lots of Sidekiq
     # processes but the alternative is a global counter
     # which can easily get out of sync with crashy processes.
diff --git a/web/views/busy.erb b/web/views/busy.erb
index 929714ae..d89d1021 100644
--- a/web/views/busy.erb
+++ b/web/views/busy.erb
@@ -13,7 +13,7 @@
   </thead>
   <% Sidekiq::ProcessSet.new.each_with_index do |process, index| %>
     <tr>
-      <td><%= process['key'] %></td>
+      <td><%= process['hostname'] %>:<%= process['pid'] %></td>
       <td><%= relative_time(Time.at(process['started_at'])) %></td>
       <td><%= process['concurrency'] %></td>
       <td><%= process['busy'] %></td>
@@ -29,14 +29,16 @@
 
 <table class="workers table table-hover table-bordered table-striped table-white">
   <thead>
+    <th><%= t('Process') %></th>
     <th><%= t('Thread') %></th>
     <th><%= t('Queue') %></th>
     <th><%= t('Class') %></th>
     <th><%= t('Arguments') %></th>
     <th><%= t('Started') %></th>
   </thead>
-  <% workers.each_with_index do |(thread, msg), index| %>
+  <% workers.each_with_index do |(process, thread, msg), index| %>
     <tr>
+      <td><%= process %></td>
       <td><%= thread %></td>
       <td>
         <a href="<%= root_path %>queues/<%= msg['queue'] %>"><%= msg['queue'] %></a>