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#!/usr/bin/env ruby
#
# ruby program to generate a performance report in PDF/png over git revisions, based on work
# originally done for gegl by pippin@gimp.org, the original program is in the public domain.
require 'cairo'
def cairo_surface(w,h)
surface = Cairo::PDFSurface.new("report.pdf", w,h)
cr = Cairo::Context.new(surface)
yield(cr)
end
class Database
def initialize()
@vals = Hash.new
@runs = Array.new
@colors = [
[0,1,0, 0.8],
[0,1,1, 0.8],
[1,0,0, 0.8],
[1,0,1, 0.8],
[1,1,0, 0.8],
#[0.5,0.5,0.5,0.8],
# gray doesnt have sufficient contrast against background
[0.5,0.5,1, 0.8],
[0.5,1,0.5, 0.8],
[0.5,1,1, 0.8],
[1,0.5,0.5, 0.8],
[1,0.5,1, 0.8],
[1,1,0.5, 0.8],
[1,1,1, 0.8],
]
@width = 1800
@height = 500
@marginlx = 10
@marginrx = 180
@rgap = 40
@marginy = 10
end
def val_max(key)
max=0
@runs.each { |run|
val = @vals[key][run]
if val and val > max
max = val
end
}
max
end
def val_min(key)
min=9999990
@runs.each { |run|
val = @vals[key][run]
min = val if val and val < min
}
#min
0 # this shows the relative noise in measurements better
end
def add_run(run)
@runs = @runs + [run]
end
def add_entry(run, name, val)
if !@vals[name]
@vals[name]=Hash.new
end
# check if there is an existing value,
# and perhaps have different behaviors
# associated with
@vals[name][run] = val.to_f
end
def drawbg cr
cr.set_source_rgba(0.2, 0.2, 0.2, 1)
cr.paint
i=0
@runs.each { |run|
if i % 2 == 1
cr.move_to 1.0 * i / @runs.length * (@width - @marginlx-@marginrx) + @marginlx, 0 * (@height - @marginy*2) + @marginy
cr.line_to 1.0 * i / @runs.length * (@width - @marginlx-@marginrx) + @marginlx, 1.0 * (@height - @marginy*2) + @marginy
cr.rel_line_to(1.0 / @runs.length * (@width - @marginlx-@marginrx), 0)
cr.rel_line_to(0, -(@height - @marginy*2))
cr.set_source_rgba([0.25,0.25,0.25,1])
cr.fill
end
i+=1
}
end
def drawtext cr
i = 0
@runs.each { |run|
y = i * 10 + 20
while y > @height - @marginy
y = y - @height + @marginy + 10
end
cr.move_to 1.0 * i / @runs.length * (@width - @marginlx-@marginrx) + @marginlx, y
cr.set_source_rgba(0.6,0.6,0.6,1)
cr.show_text(run[0..6])
i+=1
}
end
def draw_limits cr, key
cr.move_to @width - @marginrx + @rgap, 20
cr.set_source_rgba(1.0, 1.0, 1.0, 1.0)
cr.show_text(" #{val_max(key)} ")
cr.move_to @width - @marginrx + @rgap, @height - @marginy
cr.show_text(" #{val_min(key)} ")
end
def draw_val cr, key, valno
min = val_min(key)
max = val_max(key)
cr.set_source_rgba(@colors[valno])
cr.move_to(@width - @marginrx + @rgap, valno * 14 + @marginy + 20)
cr.show_text(key)
cr.line_width = 2
cr.new_path
i = 0
@runs.each { |run|
val = @vals[key][run]
if val
cr.line_to 1.0 * (i+0.5) / @runs.length * (@width - @marginlx-@marginrx) + @marginlx,
(1.0 - ((val-min) * 1.0 / (max - min))) * (@height - @marginy*2) + @marginy
end
i = i + 1
}
cr.stroke
end
def create_report
cairo_surface(@width, @height) { |cr|
drawbg cr
valno = 0
@vals.each { |key, value|
draw_val cr, key, valno
valno += 1
}
drawtext cr
cr.target.write_to_png("report.png")
valno = 0
@vals.each { |key, value|
cr.show_page
drawbg cr
draw_val cr, key, valno
drawtext cr
draw_limits cr, key
valno += 1
}
}
end
end
generator = Database.new
items = File.open('jobs').each { |rev|
rev.strip!
generator.add_run(rev)
filename = "reports/" + rev;
if File.exist?(filename)
File.open(filename).each { |line|
if line =~ /^@ (.*):(.*)/
generator.add_entry(rev, $1, $2)
end
}
end
}
generator.create_report
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