minetest/builtin/profiler/reporter.lua

278 lines
7.4 KiB
Lua

--Minetest
--Copyright (C) 2016 T4im
--
--This program is free software; you can redistribute it and/or modify
--it under the terms of the GNU Lesser General Public License as published by
--the Free Software Foundation; either version 2.1 of the License, or
--(at your option) any later version.
--
--This program is distributed in the hope that it will be useful,
--but WITHOUT ANY WARRANTY; without even the implied warranty of
--MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
--GNU Lesser General Public License for more details.
--
--You should have received a copy of the GNU Lesser General Public License along
--with this program; if not, write to the Free Software Foundation, Inc.,
--51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
local DIR_DELIM, LINE_DELIM = DIR_DELIM, "\n"
local table, unpack, string, pairs, io, os = table, unpack, string, pairs, io, os
local rep, sprintf, tonumber = string.rep, string.format, tonumber
local core, setting_get = core, core.setting_get
local reporter = {}
---
-- Shorten a string. End on an ellipsis if shortened.
--
local function shorten(str, length)
if str and str:len() > length then
return "..." .. str:sub(-(length-3))
end
return str
end
local function filter_matches(filter, text)
return not filter or string.match(text, filter)
end
local function format_number(number, fmt)
number = tonumber(number)
if not number then
return "N/A"
end
return sprintf(fmt or "%d", number)
end
local Formatter = {
new = function(self, object)
object = object or {}
object.out = {} -- output buffer
self.__index = self
return setmetatable(object, self)
end,
__tostring = function (self)
return table.concat(self.out, LINE_DELIM)
end,
print = function(self, text, ...)
if (...) then
text = sprintf(text, ...)
end
if text then
-- Avoid format unicode issues.
text = text:gsub("Ms", "µs")
end
table.insert(self.out, text or LINE_DELIM)
end,
flush = function(self)
table.insert(self.out, LINE_DELIM)
local text = table.concat(self.out, LINE_DELIM)
self.out = {}
return text
end
}
local widths = { 55, 9, 9, 9, 5, 5, 5 }
local txt_row_format = sprintf(" %%-%ds | %%%ds | %%%ds | %%%ds | %%%ds | %%%ds | %%%ds", unpack(widths))
local HR = {}
for i=1, #widths do
HR[i]= rep("-", widths[i])
end
-- ' | ' should break less with github than '-+-', when people are pasting there
HR = sprintf("-%s-", table.concat(HR, " | "))
local TxtFormatter = Formatter:new {
format_row = function(self, modname, instrument_name, statistics)
local label
if instrument_name then
label = shorten(instrument_name, widths[1] - 5)
label = sprintf(" - %s %s", label, rep(".", widths[1] - 5 - label:len()))
else -- Print mod_stats
label = shorten(modname, widths[1] - 2) .. ":"
end
self:print(txt_row_format, label,
format_number(statistics.time_min),
format_number(statistics.time_max),
format_number(statistics:get_time_avg()),
format_number(statistics.part_min, "%.1f"),
format_number(statistics.part_max, "%.1f"),
format_number(statistics:get_part_avg(), "%.1f")
)
end,
format = function(self, filter)
local profile = self.profile
self:print("Values below show absolute/relative times spend per server step by the instrumented function.")
self:print("A total of %d samples were taken", profile.stats_total.samples)
if filter then
self:print("The output is limited to '%s'", filter)
end
self:print()
self:print(
txt_row_format,
"instrumentation", "min Ms", "max Ms", "avg Ms", "min %", "max %", "avg %"
)
self:print(HR)
for modname,mod_stats in pairs(profile.stats) do
if filter_matches(filter, modname) then
self:format_row(modname, nil, mod_stats)
if mod_stats.instruments ~= nil then
for instrument_name, instrument_stats in pairs(mod_stats.instruments) do
self:format_row(nil, instrument_name, instrument_stats)
end
end
end
end
self:print(HR)
if not filter then
self:format_row("total", nil, profile.stats_total)
end
end
}
local CsvFormatter = Formatter:new {
format_row = function(self, modname, instrument_name, statistics)
self:print(
"%q,%q,%d,%d,%d,%d,%d,%f,%f,%f",
modname, instrument_name,
statistics.samples,
statistics.time_min,
statistics.time_max,
statistics:get_time_avg(),
statistics.time_all,
statistics.part_min,
statistics.part_max,
statistics:get_part_avg()
)
end,
format = function(self, filter)
self:print(
"%q,%q,%q,%q,%q,%q,%q,%q,%q,%q",
"modname", "instrumentation",
"samples",
"time min µs",
"time max µs",
"time avg µs",
"time all µs",
"part min %",
"part max %",
"part avg %"
)
for modname, mod_stats in pairs(self.profile.stats) do
if filter_matches(filter, modname) then
self:format_row(modname, "*", mod_stats)
if mod_stats.instruments ~= nil then
for instrument_name, instrument_stats in pairs(mod_stats.instruments) do
self:format_row(modname, instrument_name, instrument_stats)
end
end
end
end
end
}
local function format_statistics(profile, format, filter)
local formatter
if format == "csv" then
formatter = CsvFormatter:new {
profile = profile
}
else
formatter = TxtFormatter:new {
profile = profile
}
end
formatter:format(filter)
return formatter:flush()
end
---
-- Format the profile ready for display and
-- @return string to be printed to the console
--
function reporter.print(profile, filter)
if filter == "" then filter = nil end
return format_statistics(profile, "txt", filter)
end
---
-- Serialize the profile data and
-- @return serialized data to be saved to a file
--
local function serialize_profile(profile, format, filter)
if format == "lua" or format == "json" or format == "json_pretty" then
local stats = filter and {} or profile.stats
if filter then
for modname, mod_stats in pairs(profile.stats) do
if filter_matches(filter, modname) then
stats[modname] = mod_stats
end
end
end
if format == "lua" then
return core.serialize(stats)
elseif format == "json" then
return core.write_json(stats)
elseif format == "json_pretty" then
return core.write_json(stats, true)
end
end
-- Fall back to textual formats.
return format_statistics(profile, format, filter)
end
local worldpath = core.get_worldpath()
local function get_save_path(format, filter)
local report_path = setting_get("profiler.report_path") or ""
if report_path ~= "" then
core.mkdir(sprintf("%s%s%s", worldpath, DIR_DELIM, report_path))
end
return (sprintf(
"%s/%s/profile-%s%s.%s",
worldpath,
report_path,
os.date("%Y%m%dT%H%M%S"),
filter and ("-" .. filter) or "",
format
):gsub("[/\\]+", DIR_DELIM))-- Clean up delims
end
---
-- Save the profile to the world path.
-- @return success, log message
--
function reporter.save(profile, format, filter)
if not format or format == "" then
format = setting_get("profiler.default_report_format") or "txt"
end
if filter == "" then
filter = nil
end
local path = get_save_path(format, filter)
local output, io_err = io.open(path, "w")
if not output then
return false, "Saving of profile failed with: " .. io_err
end
local content, err = serialize_profile(profile, format, filter)
if not content then
output:close()
return false, "Saving of profile failed with: " .. err
end
output:write(content)
output:close()
local logmessage = "Profile saved to " .. path
core.log("action", logmessage)
return true, logmessage
end
return reporter