gitlab-org--gitlab-foss/lib/gitlab/profiler/total_time_flat_printer.rb
Sean McGivern ef973f6f28 Add a Gitlab::Profiler.print_by_total_time convenience method
This method uses Gitlab::Profiler::TotalTimeFlatPrinter internally, which is the
same as RubyProf::FlatPrinter, but the min_percent option (and new max_percent
option) applies to the _total_ time, not the _self_ time. This helps us figure
out if we're calling a library inefficiently, for instance.
2018-07-19 16:00:27 +01:00

39 lines
1.3 KiB
Ruby

module Gitlab
module Profiler
class TotalTimeFlatPrinter < RubyProf::FlatPrinter
def max_percent
@options[:max_percent] || 100
end
# Copied from:
# <https://github.com/ruby-prof/ruby-prof/blob/master/lib/ruby-prof/printers/flat_printer.rb>
#
# The changes are just to filter by total time, not self time, and add a
# max_percent option as well.
def print_methods(thread)
total_time = thread.total_time
methods = thread.methods.sort_by(&sort_method).reverse
sum = 0
methods.each do |method|
total_percent = (method.total_time / total_time) * 100
next if total_percent < min_percent
next if total_percent > max_percent
sum += method.self_time
@output << "%6.2f %9.3f %9.3f %9.3f %9.3f %8d %s%s\n" % [
method.self_time / total_time * 100, # %self
method.total_time, # total
method.self_time, # self
method.wait_time, # wait
method.children_time, # children
method.called, # calls
method.recursive? ? "*" : " ", # cycle
method_name(method) # name
]
end
end
end
end
end