mirror of
https://github.com/sbrl/Minetest-WorldEditAdditions.git
synced 2024-11-15 20:52:59 +00:00
81 lines
2.2 KiB
Lua
81 lines
2.2 KiB
Lua
local LRU = require("lru")
|
|
local operations = 100000
|
|
local values = {
|
|
"Abiu", "Açaí", "Acerola", "Ackee", "African cucumber", "Apple", "Apricot",
|
|
"Avocado", "Banana", "Bilberry", "Blackberry", "Blackcurrant",
|
|
"Black sapote", "Blueberry", "Boysenberry", "Breadfruit", "Cactus pear",
|
|
"Canistel", "Cempedak", "Cherimoya", "Cherry", "Chico fruit", "Cloudberry",
|
|
"Coco De Mer", "Coconut", "Crab apple", "Cranberry", "Currant", "Damson",
|
|
"Date", "Dragonfruit (or Pitaya)", "Durian", "Egg Fruit", "Elderberry",
|
|
"Feijoa", "Fig", "Finger Lime", "Goji berry", "Gooseberry", "Grape",
|
|
"Raisin", "Grapefruit", "Grewia asiatica", "Guava", "Hala Fruit",
|
|
"Honeyberry", "Huckleberry", "Jabuticaba", "Jackfruit", "Jambul",
|
|
"Japanese plum", "Jostaberry", "Jujube", "Juniper berry", "Kaffir Lime",
|
|
"Kiwano", "Kiwifruit", "Kumquat", "Lemon", "Lime", "Loganberry", "Longan",
|
|
"Loquat"
|
|
}
|
|
|
|
-- From http://lua-users.org/wiki/SimpleRound
|
|
function round(num, numDecimalPlaces)
|
|
local mult = 10^(numDecimalPlaces or 0)
|
|
return math.floor(num * mult + 0.5) / mult
|
|
end
|
|
|
|
--- Pads str to length len with char from right
|
|
-- @source https://snipplr.com/view/13092/strlpad--pad-string-to-the-left
|
|
local function str_padend(str, len, char)
|
|
if char == nil then char = ' ' end
|
|
return str .. string.rep(char, len - #str)
|
|
end
|
|
--- Pads str to length len with char from left
|
|
-- Adapted from the above
|
|
local function str_padstart(str, len, char)
|
|
if char == nil then char = ' ' end
|
|
return string.rep(char, len - #str) .. str
|
|
end
|
|
|
|
|
|
local values_count = #values
|
|
|
|
function test(size)
|
|
local cpu_start = os.clock()
|
|
|
|
|
|
local lru = LRU.new(size)
|
|
|
|
local hits = 0
|
|
local misses = 0
|
|
for i=1,operations do
|
|
local key = values[math.random(1, values_count)]
|
|
if math.random() >= 0.5 then
|
|
-- set
|
|
lru:set(key, math.random())
|
|
else
|
|
-- get
|
|
if lru:get(key) == nil then
|
|
misses = misses + 1
|
|
lru:set(key, math.random())
|
|
else
|
|
hits = hits + 1
|
|
end
|
|
end
|
|
end
|
|
|
|
|
|
local cpu_end = os.clock()
|
|
print(
|
|
size,
|
|
str_padend(tostring(round(cpu_end - cpu_start, 6)), 9),
|
|
hits, misses,
|
|
((hits/operations)*100)
|
|
)
|
|
end
|
|
|
|
|
|
io.stderr:write("OPERATIONS\t"..operations.."\n")
|
|
print("size", "cpu time", "hits", "misses", "hit ratio (%)")
|
|
for i=3,256 do
|
|
io.stderr:write("size "..i.."\r")
|
|
test(i)
|
|
|
|
end
|