##- Bitte geben Sie Ihre Antwort über dieser Zeile ein. -##Sie sind in dieser Supportanfrage (2001706) auf CC gesetzt. Antworten Sie auf diese E-Mail, um Kommentare zur Anfrage hinzuzufügen.
Ruby users
18. Mai 2023, 14:35 MESZ
For posterity, I've put the benchmark code and results from my previous email here:
https://gist.github.com/flavorjones/4875b772b7517185913bded8e18b1ed5
In case I didn't make it clear, using Nokogiri's Document API is faster than Builder and (unless you have benchmarks showing something else) I still recommend using it over rolling your own templating solution.
On Thu, May 18, 2023 at 8:24 AM Peter Hickman via ruby-talk <ruby-talk@ml.ruby-lang.org> wrote:
So far building it by hand is no faster than using builder. Which I'm going to see as a plus for builder because it sure is easier to read
I think that the real issue is building a big string piecemeal is where the time is being spent
-K0GVP]
______________________________________________
ruby-talk mailing list -- ruby-talk@ml.ruby-lang.org
To unsubscribe send an email to ruby-talk-leave@ml.ruby-lang.org
ruby-talk info -- https://ml.ruby-lang.org/mailman3/postorius/lists/ruby-talk.ml.ruby-lang.org/
Peter Hickman
18. Mai 2023, 14:24 MESZ
So far building it by hand is no faster than using builder. Which I'm going to see as a plus for builder because it sure is easier to read
I think that the real issue is building a big string piecemeal is where the time is being spent
-K0GVP]
Ruby users
18. Mai 2023, 14:18 MESZ
If you want to optimize for speed, I'd recommend using Nokogiri, but not the Nokogiri::XML::Builder which will perform about as well as the Builder gem. Instead, use the lower-level Document and Node APIs.
Here's some code showing equivalent document construction for Builder, Nokogiri::XML::Builder, and Nokogiri::XML::Document ... and a benchmark if it's helpful (higher numbers are better, it's iterations per second):
```ruby
#! /usr/bin/env rubyrequire "bundler/inline"
gemfile do
source "https://rubygems.org"
gem "builder"
gem "nokogiri"
gem "benchmark-ips"
endrequire "builder"
require "nokogiri"
require "benchmark/ips"N = 100
# using Builder::XmlMarkup, build an XML document representing attributes of a person
def builder_person
xml = Builder::XmlMarkup.new
xml.people do |p|
N.times do
xml.person do |p|
p.name "John Doe"
p.age 42
p.address do |a|
a.street "123 Main Street"
a.city "Anytown"
end
end
end
end
end# using Nokogiri::XML::Builder, build an XML document representing attributes of a person
def nokogiri_person
Nokogiri::XML::Builder.new do |xml|
xml.people do
N.times do
xml.person do |p|
p.name "John Doe"
p.age 42
p.address do |a|
a.street "123 Main Street"
a.city "Anytown"
end
end
end
end
end.to_xml
end# use Nokogiri's bare API to build an XML document representing attributes of a person
def nokogiri_raw_person
xml = Nokogiri::XML::Document.new
xml.root = xml.create_element("people")
N.times do
xml.root.add_child(xml.create_element("person")).tap do |p|
p.add_child(xml.create_element("name", "John Doe"))
p.add_child(xml.create_element("age", 42))
p.add_child(xml.create_element("address")).tap do |a|
a.add_child(xml.create_element("street", "123 Main Street"))
a.add_child(xml.create_element("city", "Anytown"))
end
end
end
xml.to_xml
endputs RUBY_DESCRIPTION
# pp builder_person
# pp nokogiri_person
# pp nokogiri_raw_personBenchmark.ips do |x|
x.report("builder") { builder_person }
x.report("nokogiri") { nokogiri_person }
x.report("nokogiri raw") { nokogiri_raw_person }
x.compare!
end
``````
ruby 3.2.2 (2023-03-30 revision e51014f9c0) [x86_64-linux]
Warming up --------------------------------------
builder 58.000 i/100ms
nokogiri 49.000 i/100ms
nokogiri raw 61.000 i/100ms
Calculating -------------------------------------
builder 541.580 (± 6.5%) i/s - 2.726k in 5.054535s
nokogiri 451.127 (± 7.5%) i/s - 2.254k in 5.027192s
nokogiri raw 681.437 (± 9.1%) i/s - 3.416k in 5.061582sComparison:
nokogiri raw: 681.4 i/s
builder: 541.6 i/s - 1.26x slower
nokogiri: 451.1 i/s - 1.51x slower
```On Thu, May 18, 2023 at 8:02 AM Austin Ziegler via ruby-talk <ruby-talk@ml.ruby-lang.org> wrote:
I have never used the Rails builder interface for JSON or XML generation. It’s nice because it’s DSL-ish, but it needs to be executed.
If your data can be templated, using ERB will be better. If it is more complex with attributes, look into restructuring it so that you can use Nokogiri. I’m not sure if Ox generates as well as parses, but it may also be an option.
-a
> On May 18, 2023, at 04:25, Peter Hickman via ruby-talk <ruby-talk@ml.ruby-lang.org> wrote:
>
>
> I'm profiling some code to try and squeeze out performance. It takes a user query, reads data from the database and returned the result as XML
>
> I have tuned the code and database (checking the indexes, caching repeated calls etc) and what I am left with is that 95% of the call's runtime is building the XML. We are using builder because it is the standard / default for Ruby
>
> Using Ruby 3.0.2p107 as it is the default for Ubuntu 22.04
>
> Is there another, faster library for XML generation or will I be building this by hand?
>
> Any suggestions
>
> ______________________________________________
> ruby-talk mailing list -- ruby-talk@ml.ruby-lang.org
> To unsubscribe send an email to ruby-talk-leave@ml.ruby-lang.org
> ruby-talk info -- https://ml.ruby-lang.org/mailman3/postorius/lists/ruby-talk.ml.ruby-lang.org/
______________________________________________
ruby-talk mailing list -- ruby-talk@ml.ruby-lang.org
To unsubscribe send an email to ruby-talk-leave@ml.ruby-lang.org
ruby-talk info -- https://ml.ruby-lang.org/mailman3/postorius/lists/ruby-talk.ml.ruby-lang.org/
Ruby users
18. Mai 2023, 14:02 MESZ
I have never used the Rails builder interface for JSON or XML generation. It’s nice because it’s DSL-ish, but it needs to be executed.
If your data can be templated, using ERB will be better. If it is more complex with attributes, look into restructuring it so that you can use Nokogiri. I’m not sure if Ox generates as well as parses, but it may also be an option.
-a
> On May 18, 2023, at 04:25, Peter Hickman via ruby-talk <ruby-talk@ml.ruby-lang.org> wrote:
>
>
> I'm profiling some code to try and squeeze out performance. It takes a user query, reads data from the database and returned the result as XML
>
> I have tuned the code and database (checking the indexes, caching repeated calls etc) and what I am left with is that 95% of the call's runtime is building the XML. We are using builder because it is the standard / default for Ruby
>
> Using Ruby 3.0.2p107 as it is the default for Ubuntu 22.04
>
> Is there another, faster library for XML generation or will I be building this by hand?
>
> Any suggestions
>
> ______________________________________________
> ruby-talk mailing list -- ruby-talk@ml.ruby-lang.org
> To unsubscribe send an email to ruby-talk-leave@ml.ruby-lang.org
> ruby-talk info -- https://ml.ruby-lang.org/mailman3/postorius/lists/ruby-talk.ml.ruby-lang.org/
______________________________________________
ruby-talk mailing list -- ruby-talk@ml.ruby-lang.org
To unsubscribe send an email to ruby-talk-leave@ml.ruby-lang.org
ruby-talk info -- https://ml.ruby-lang.org/mailman3/postorius/lists/ruby-talk.ml.ruby-lang.org/
Ruby users
18. Mai 2023, 10:25 MESZ
I'm profiling some code to try and squeeze out performance. It takes a user query, reads data from the database and returned the result as XML
I have tuned the code and database (checking the indexes, caching repeated calls etc) and what I am left with is that 95% of the call's runtime is building the XML. We are using builder because it is the standard / default for Ruby
Using Ruby 3.0.2p107 as it is the default for Ubuntu 22.04
Is there another, faster library for XML generation or will I be building this by hand?
Any suggestions
