diff --git a/test/test_all_hashes.rb b/test/test_all_hashes.rb
new file mode 100644
index 0000000..b9b5119
--- /dev/null
+++ b/test/test_all_hashes.rb
@@ -0,0 +1,42 @@
+# shows the effect of using .all_hashes instead of looping on each hash 
+# run it by substiting in a 'long' [many row] query for the query variable and toggling use_all_hashes here at the top
+# note that we load all the rows first, then run .all_hashes on the result [to see more easily the effect of all hashes]
+# on my machine and a 200_000 row table, it took 3.38s versus 3.65s
+require 'mysqlplus'
+
+use_the_all_hashes_method = true 
+
+$count = 5
+
+$start = Time.now
+
+$connections = []
+$count.times do  
+  $connections << Mysql.real_connect('localhost','root', '', 'local_leadgen_dev')
+end
+
+puts 'connection pool ready'
+
+$threads = []
+$count.times do |i|
+  $threads << Thread.new do
+
+    query = "select * from campus_zips"
+    puts "sending query on connection #{i}"
+    conn = $connections[i]
+    result = conn.async_query(query)
+    if use_the_all_hashes_method
+      saved =  result.all_hashes
+    else
+      saved = []
+      result.each_hash {|h| saved << h } 
+    end
+    result.free
+
+  end
+end
+
+puts 'waiting on threads'
+$threads.each{|t| t.join }
+
+puts Time.now - $start