tests/vm/perf_madvise.lua

   1 #!/usr/local/bin/recon
   2
   3 local benchrun = require 'benchrun'
   4 local perfdata = require 'perfdata'
   5 local csv = require 'csv'
   6
   7 require 'strict'
   8
   9 local kDefaultDuration = 15
  10 local kDefaultSizeMb = 16
  11
  12 local benchmark = benchrun.new {
  13     name = 'xnu.madvise',
  14     version = 1,
  15     arg = arg,
  16     modify_argparser = function(parser)
  17         parser:argument {
  18           name = 'path',
  19           description = 'Path to perf_madvise binary'
  20         }
  21         parser:option{
  22           name = '--duration',
  23           description = 'How long, in seconds, to run each iteration',
  24           default = kDefaultDuration
  25         }
  26         parser:option{
  27             name = '--variant',
  28             description = 'Which benchmark variant to run (MADV_FREE)',
  29             default = 'MADV_FREE',
  30             choices = {"MADV_FREE"}
  31         }
  32         parser:option{
  33             name = '--verbose',
  34             description = 'Enable verbose logging',
  35         }
  36         parser:option{
  37             name = '--size',
  38             description = 'Madvise buffer size (MB)',
  39             default = kDefaultSizeMb
  40         }
  41     end
  42 }
  43
  44 local unit = perfdata.unit.custom('pages/sec')
  45 local tests = {
  46     path = benchmark.opt.path,
  47 }
  48
  49 local args = {benchmark.opt.path, benchmark.opt.variant, benchmark.opt.duration, benchmark.opt.size}
  50 if benchmark.opt.verbose then
  51     table.insert(args, "-v")
  52 end
  53 args.echo = true
  54 for out in benchmark:run(args) do
  55     local result = out:match("-----Results-----\n(.*)")
  56     benchmark:assert(result, "Unable to find result data in output")
  57     local data = csv.openstring(result, {header = true})
  58     for field in data:lines() do
  59         for k, v in pairs(field) do
  60             benchmark.writer:add_value(k, unit, tonumber(v), {
  61               [perfdata.larger_better] = true,
  62               variant = benchmark.opt.variant
  63             })
  64         end
  65     end
  66 end
  67 benchmark.writer:set_primary_metric("Throughput (bytes / CPU second)")
  68
  69 benchmark:finish()