49 lines
1.2 KiB
Crystal
49 lines
1.2 KiB
Crystal
require "../src/cox"
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if ARGV.empty?
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puts "Help select Pwhash ops/mem limits for your application."
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puts "Usage: #{PROGRAM_NAME} time_min [time_max] [mem_max]"
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puts "\ttime is in seconds"
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puts "\tmem is in bytes"
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exit 1
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end
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time_min = ARGV.shift?.try &.to_f || 0.1
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time_limit = if t = ARGV.shift?
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t.to_f
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else
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time_min * 4
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end
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mem_limit = (ARGV.shift?.try &.to_i || (Cox::Pwhash::MEMLIMIT_MAX)).to_u64
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pwhash = Cox::Pwhash.new
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pass = "1234"
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pwhash.memlimit = Cox::Pwhash::MEMLIMIT_MIN
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loop do
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pwhash.opslimit = Cox::Pwhash::OPSLIMIT_MIN
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loop do
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# p pwhash
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t = Time.measure { pwhash.store pass }.to_f
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s = String.build do |sb|
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sb << "mem_limit "
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sb << "%7d" % (pwhash.memlimit / 1024)
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sb << "K ops_limit "
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sb << "%7d" % pwhash.opslimit
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sb << " "
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sb << "%8.4fs" % t
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end
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puts s if t >= time_min
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break if t >= time_limit
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pwhash.opslimit *= 2
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end
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puts ""
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break if pwhash.memlimit >= mem_limit
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break if pwhash.opslimit == Cox::Pwhash::OPSLIMIT_MIN # Couldn't get past 1 iteration before going over time.
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pwhash.memlimit *= 2
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end
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# TODO: table format
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