From: "Patrick B." <lists@...>
Date: 2012-09-20T13:31:16+09:00
Subject: Re: wow, YAML / Psych in 1.9.3 is *slow*!

Peter Zotov wrote in post #1076749:
> Patrick B. писал 19.09.2012 19:14:
>>>   YAML::ENGINE.yamler = 'syck'
>>> rescue
>>>
>>> Using syck, the same routine takes about 7 seconds.
>>
>> Wow indeed! With a test app with some of my data (having to load 820
>> yaml documents) switching to syck took execution from 16.7 to 1.3
>> seconds!
>> Are there any known side-effects with doing this?
>
> Yes; namely, not being compatible with YAML specification.
> Psych was written for a reason, and that reason was Syck's brokenness.
> For years it has generated invalid YAML (or was refusing to consume
> valid YAML; I have seen different opinions on this) in common cases.
> For
> example, this:
> http://blog.rubygems.org/2011/08/31/shaving-the-yaml-yak.html

So then what can be done to improve the speed of the 'correct' YAML 
library?  The difference is to put it mildly, significant.  :(

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