Release v6.25.2 #775
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Release v6.25.2 #775
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Use docker compose exec to run queue commands in maze runner tests
The current implementation checks if `auto_notify` is an instance of
`TrueClass` or `FalseClass` (in that order). As this is a "hot path" as
far as Bugsnag is concerned (runs on all notifications), we can consider
applying the following optimizations:
- `true` and `false` are singleton instances of `TrueClass` and
`FalseClass`, respectively. Therefore, we can rely on the slightly
faster `.equal?` check, which relies on object identity.
- `false` is the default for the method, so is likely the most common
usage, so we can invert the order of the check and check for `false`
before `true`, to benefit from short circuiting in the more common case.
This new implementation is faster in the `false` and non-boolean cases,
and while it is slower in the `true` case (because of the order
inversion), it is still faster than the previous approach was in the
`false` case.
We can test this using the following benchmark:
require "benchmark/ips"
[
false, # Default – Probably most common case
true, # Override – Probably accounts for almost all other usage
{}, # Deprecated – Probably barely any usage
].freeze.each do |auto_notify|
Benchmark.ips do |x|
x.compare!
x.report("#{auto_notify}.is_a? TrueClass or #{auto_notify}.is_a? FalseClass (status quo)") do
auto_notify.is_a? TrueClass or auto_notify.is_a? FalseClass
end
x.report("false.equal? #{auto_notify} or true.equal? #{auto_notify} (proposed) ") do
false.equal? auto_notify or true.equal? auto_notify
end
end
end
which produces the following results:
Implementation |`false` |`true` |`{}`
----------------------------------------------------------------------------|--------------------|--------------------|--------------------
`auto_notify.is_a? TrueClass or auto_notify.is_a? FalseClass` _(status quo)_|11.978M (± 0.6%) i/s|17.122M (± 1.3%) i/s|11.814M (± 0.5%) i/s
`false.equal? auto_notify or true.equal? auto_notify` _(proposal)_ |17.955M (± 0.4%) i/s|13.553M (± 1.6%) i/s|13.420M (± 2.5%) i/s
…check Optimize `auto_notify` boolean check
tomlongridge
approved these changes
Feb 2, 2023
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tomlongridge
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Feb 3, 2023
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Enhancements
Bugsnag.notify| #774
| sambostock