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