mahlon@martini.nu
907cdecfc5
FossilOrigin-Name: d29068edd8e72591d850c69b1454bd0b9567c0f10185be80aa1f8abaec618192
69 lines
1.1 KiB
Ruby
Executable file
69 lines
1.1 KiB
Ruby
Executable file
#!/usr/bin/env ruby
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#
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require 'mdbx'
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require 'benchmark'
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require 'fileutils'
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include FileUtils
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db = MDBX::Database.open( 'tmpdb' )
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mtx = Mutex.new
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at_exit do
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rm_r 'tmpdb'
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end
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THREAD_COUNT = 10
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WRITES_PER = 1000
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puts "#{THREAD_COUNT} simultaneous threads, #{WRITES_PER} writes each:"
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Benchmark.bm( 10 ) do |x|
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x.report( " txn per write:" ) do
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threads = []
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THREAD_COUNT.times do |i|
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threads << Thread.new do
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mtx.synchronize do
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WRITES_PER.times do
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key = "%02d-%d" % [ i, rand(1000) ]
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db[ key ] = rand(1000)
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end
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end
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end
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end
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threads.map( &:join )
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end
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# Long running transactions require a mutex across threads.
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#
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x.report( "txn per thread:" ) do
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threads = []
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THREAD_COUNT.times do |i|
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threads << Thread.new do
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mtx.synchronize do
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db.transaction do
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WRITES_PER.times do
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key = "%02d-%d" % [ i, rand(1000) ]
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db[ key ] = rand(1000)
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end
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end
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end
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end
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end
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threads.map( &:join )
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end
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x.report( " unthreaded:" ) do
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db.transaction do
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( THREAD_COUNT * WRITES_PER ).times do
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key = "000-%d" % [ rand(1000) ]
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db[ key ] = rand(1000)
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end
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end
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end
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end
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