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Performance.md

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Performance

Note: This document contains historical benchmark data from 2012. The kgio gem is no longer supported or needed in modern Ruby versions. For current benchmarks, run bundle exec rake bench locally.

Caching is all about performance, so I carefully track Dalli performance to ensure no regressions.

Note I've added some benchmarks over time to Dalli that the other libraries don't necessarily have.

memcache-client

Testing 1.8.5 with ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin11.2.0]

                                      user     system      total        real
set:plain:memcache-client         1.860000   0.310000   2.170000 (  2.188030)
set:ruby:memcache-client          1.830000   0.290000   2.120000 (  2.130212)
get:plain:memcache-client         1.830000   0.340000   2.170000 (  2.176156)
get:ruby:memcache-client          1.900000   0.330000   2.230000 (  2.235045)
multiget:ruby:memcache-client     0.860000   0.120000   0.980000 (  0.987348)
missing:ruby:memcache-client      1.630000   0.320000   1.950000 (  1.954867)
mixed:ruby:memcache-client        3.690000   0.670000   4.360000 (  4.364469)

dalli

Testing with Rails 3.2.1 Using kgio socket IO Testing 2.0.0 with ruby 1.9.3p125 (2012-02-16 revision 34643) [x86_64-darwin11.3.0]

                                      user     system      total        real
mixed:rails:dalli                 1.580000   0.570000   2.150000 (  3.008839)
set:plain:dalli                   0.730000   0.300000   1.030000 (  1.567098)
setq:plain:dalli                  0.520000   0.120000   0.640000 (  0.634402)
set:ruby:dalli                    0.800000   0.300000   1.100000 (  1.640348)
get:plain:dalli                   0.840000   0.330000   1.170000 (  1.668425)
get:ruby:dalli                    0.850000   0.330000   1.180000 (  1.665716)
multiget:ruby:dalli               0.700000   0.260000   0.960000 (  0.965423)
missing:ruby:dalli                0.720000   0.320000   1.040000 (  1.511720)
mixed:ruby:dalli                  1.660000   0.640000   2.300000 (  3.320743)
mixedq:ruby:dalli                 1.630000   0.510000   2.140000 (  2.629734)
incr:ruby:dalli                   0.270000   0.100000   0.370000 (  0.547618)