diff options
Diffstat (limited to 'examples/redis-unstable/utils/hyperloglog/hll-err.rb')
| -rw-r--r-- | examples/redis-unstable/utils/hyperloglog/hll-err.rb | 30 |
1 files changed, 0 insertions, 30 deletions
diff --git a/examples/redis-unstable/utils/hyperloglog/hll-err.rb b/examples/redis-unstable/utils/hyperloglog/hll-err.rb deleted file mode 100644 index 1278397..0000000 --- a/examples/redis-unstable/utils/hyperloglog/hll-err.rb +++ /dev/null @@ -1,30 +0,0 @@ -# hll-err.rb - Copyright (C) 2014-Present Redis Ltd. -# -# Licensed under your choice of (a) the Redis Source Available License 2.0 -# (RSALv2); or (b) the Server Side Public License v1 (SSPLv1); or (c) the -# GNU Affero General Public License v3 (AGPLv3). -# -# Check error of HyperLogLog Redis implementation for different set sizes. - -require 'rubygems' -require 'redis' -require 'digest/sha1' - -r = Redis.new -r.del('hll') -i = 0 -while true do - 100.times { - elements = [] - 1000.times { - ele = Digest::SHA1.hexdigest(i.to_s) - elements << ele - i += 1 - } - r.pfadd('hll',elements) - } - approx = r.pfcount('hll') - abs_err = (approx-i).abs - rel_err = 100.to_f*abs_err/i - puts "#{i} vs #{approx}: #{rel_err}%" -end |
