mirror of
http://github.com/valkey-io/valkey
synced 2024-11-22 09:17:20 +00:00
113 lines
1.8 KiB
Ruby
113 lines
1.8 KiB
Ruby
require 'rubygems'
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require 'redis'
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r = Redis.new
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r.config("SET","maxmemory","2000000")
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r.config("SET","maxmemory-policy","allkeys-lru")
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r.config("SET","maxmemory-samples",5)
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r.config("RESETSTAT")
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r.flushall
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puts <<EOF
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<html>
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<body>
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<style>
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.box {
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width:5px;
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height:5px;
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float:left;
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margin: 1px;
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}
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.old {
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border: 1px black solid;
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}
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.new {
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border: 1px green solid;
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}
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.ex {
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background-color: #666;
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}
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</style>
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<pre>
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EOF
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# Fill
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oldsize = r.dbsize
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id = 0
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while true
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id += 1
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r.set(id,"foo")
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newsize = r.dbsize
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break if newsize == oldsize
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oldsize = newsize
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end
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inserted = r.dbsize
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first_set_max_id = id
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puts "#{r.dbsize} keys inserted"
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# Access keys sequentially
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puts "Access keys sequentially"
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(1..first_set_max_id).each{|id|
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r.get(id)
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# sleep 0.001
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}
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# Insert more 50% keys. We expect that the new keys
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half = inserted/2
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puts "Insert enough keys to evict half the keys we inserted"
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add = 0
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while true
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add += 1
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id += 1
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r.set(id,"foo")
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break if r.info['evicted_keys'].to_i >= half
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end
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puts "#{add} additional keys added."
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puts "#{r.dbsize} keys in DB"
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# Check if evicted keys respect LRU
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# We consider errors from 1 to N progressively more serious as they violate
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# more the access pattern.
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errors = 0
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e = 1
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edecr = 1.0/(first_set_max_id/2)
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(1..(first_set_max_id/2)).each{|id|
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e -= edecr if e > 0
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e = 0 if e < 0
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if r.exists(id)
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errors += e
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end
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}
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puts "#{errors} errors!"
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puts "</pre>"
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# Generate the graphical representation
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(1..id).each{|id|
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# Mark first set and added items in a different way.
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c = "box"
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if id <= first_set_max_id
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c << " old"
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else
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c << " new"
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end
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# Add class if exists
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c << " ex" if r.exists(id)
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puts "<div class=\"#{c}\"></div>"
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}
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# Close HTML page
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puts <<EOF
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</body>
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</html>
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EOF
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