I just started trying Ruby 1.9.3, coming from Ruby 1.8.7, and was
surprised to discover YAML’s sluggishness. The chief problem seems to be
the Psych library.
In my main use case, a certain routine takes about 14 seconds.
Fortunately, I can switch to the “syck” library:
YAML::ENGINE.yamler = ‘syck’
Using syck, the same routine takes about 7 seconds.
That’s actually a bit faster than the same routine under Ruby 1.8.7 with
the old YAML, where the time for the same routine is 8 or 9 seconds. So
to get the juicy goodness of improved speed in Ruby 1.9.3, I definitely
need to use “syck”.
A little googling suggests I’m not the only person to make this sort of