Created
February 11, 2019 10:05
-
-
Save mirasrael/6b7e4566f76080b5f65440218e5593c8 to your computer and use it in GitHub Desktop.
dict comparison
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
public static void Main (string[] args) | |
{ | |
var iterations = 1000; | |
var size = 100000; | |
for (var i = 0; i < size; i++) | |
{ | |
concurrent.Add(i.ToString(), i); | |
simple.Add(i.ToString(), i); | |
threadSafe.Add(i.ToString(), i); | |
} | |
var sw = Stopwatch.StartNew(); | |
var max = 0; | |
for (var it = 0; it < iterations; it++) | |
{ | |
Parallel.For(0, size, i => | |
{ | |
concurrent.TryGetValue(i.ToString(), out var element); | |
if (element > max) | |
max = element; | |
}); | |
} | |
sw.Stop(); | |
Console.WriteLine($"concurrent: {sw.Elapsed}"); | |
sw = Stopwatch.StartNew(); | |
max = 0; | |
for (var it = 0; it < iterations; it++) | |
{ | |
Parallel.For(0, size, i => | |
{ | |
threadSafe.TryGetValue(i.ToString(), out var element); | |
if (element > max) | |
max = element; | |
}); | |
} | |
sw.Stop(); | |
Console.WriteLine($"thread-safe: {sw.Elapsed}"); | |
sw = Stopwatch.StartNew(); | |
var rw = new ReaderWriterLockSlim(); | |
max = 0; | |
for (var it = 0; it < iterations; it++) | |
{ | |
Parallel.For(0, size, i => | |
{ | |
rw.EnterReadLock(); | |
try | |
{ | |
simple.TryGetValue(i.ToString(), out var element); | |
if (element > max) | |
max = element; | |
} | |
finally | |
{ | |
rw.ExitReadLock(); | |
} | |
}); | |
} | |
sw.Stop(); | |
Console.WriteLine($"rw + simple: {sw.Elapsed}"); | |
sw = Stopwatch.StartNew(); | |
max = 0; | |
for (var it = 0; it < iterations; it++) | |
{ | |
Parallel.For(0, size, i => | |
{ | |
lock (simple) | |
{ | |
simple.TryGetValue(i.ToString(), out var element); | |
if (element > max) | |
max = element; | |
} | |
}); | |
} | |
sw.Stop(); | |
Console.WriteLine($"lock + simple: {sw.Elapsed}"); | |
} | |
private static IDictionary<string, int> concurrent = new ConcurrentDictionary<string, int>(); | |
private static IDictionary<string, int> threadSafe = new ThreadSafeDictionary<string, int>(); | |
private static IDictionary<string, int> simple = new ConcurrentDictionary<string, int>(); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
concurrent: 00:00:02.7575280
thread-safe: 00:00:05.3959692
rw + simple: 00:00:24.2981597
lock + simple: 00:00:27.4054182