এটি আকর্ষণীয় যে কাস্টম ফর্ম্যাট "yyyy-MM-ddTHH: মিমি: এসএসকে" (এমএস ছাড়াই) দ্রুততম বিন্যাস পদ্ধতি।
এছাড়াও এটি আকর্ষণীয় যে "এস" ফর্ম্যাটটি ধ্রুপদী এবং ধীরে ধীরে কোরে ...
অবশ্যই সংখ্যাগুলি খুব কাছাকাছি, কিছু সারিগুলির মধ্যে পার্থক্য নগণ্য (প্রত্যয় সহ পরীক্ষাগুলি _Verify
সেই প্রত্যয় ব্যতীত একই, ফলাফল পুনরাবৃত্তিযোগ্যতা প্রদর্শন করে)
BenchmarkDotNet=v0.10.5, OS=Windows 10.0.14393
Processor=Intel Core i5-2500K CPU 3.30GHz (Sandy Bridge), ProcessorCount=4
Frequency=3233539 Hz, Resolution=309.2587 ns, Timer=TSC
[Host] : Clr 4.0.30319.42000, 64bit RyuJIT-v4.6.1637.0
Clr : Clr 4.0.30319.42000, 64bit RyuJIT-v4.6.1637.0
Core : .NET Core 4.6.25009.03, 64bit RyuJIT
Method | Job | Runtime | Mean | Error | StdDev | Median | Min | Max | Rank | Gen 0 | Allocated |
--------------------- |----- |-------- |-----------:|----------:|----------:|-----------:|-----------:|-----------:|-----:|-------:|----------:|
CustomDev1 | Clr | Clr | 1,089.0 ns | 22.179 ns | 20.746 ns | 1,079.9 ns | 1,068.9 ns | 1,133.2 ns | 8 | 0.1086 | 424 B |
CustomDev2 | Clr | Clr | 1,032.3 ns | 19.897 ns | 21.289 ns | 1,024.7 ns | 1,000.3 ns | 1,072.0 ns | 7 | 0.1165 | 424 B |
CustomDev2WithMS | Clr | Clr | 1,168.2 ns | 16.543 ns | 15.474 ns | 1,168.5 ns | 1,149.3 ns | 1,189.2 ns | 10 | 0.1625 | 592 B |
FormatO | Clr | Clr | 1,563.7 ns | 31.244 ns | 54.721 ns | 1,532.5 ns | 1,497.8 ns | 1,703.5 ns | 14 | 0.2897 | 976 B |
FormatS | Clr | Clr | 1,243.5 ns | 24.615 ns | 31.130 ns | 1,229.3 ns | 1,200.6 ns | 1,324.2 ns | 13 | 0.2865 | 984 B |
FormatS_Verify | Clr | Clr | 1,217.6 ns | 11.486 ns | 10.744 ns | 1,216.2 ns | 1,205.5 ns | 1,244.3 ns | 12 | 0.2885 | 984 B |
CustomFormatK | Clr | Clr | 912.2 ns | 17.915 ns | 18.398 ns | 916.6 ns | 878.3 ns | 934.1 ns | 4 | 0.0629 | 240 B |
CustomFormatK_Verify | Clr | Clr | 894.0 ns | 3.877 ns | 3.626 ns | 893.8 ns | 885.1 ns | 900.0 ns | 3 | 0.0636 | 240 B |
CustomDev1 | Core | Core | 989.1 ns | 12.550 ns | 11.739 ns | 983.8 ns | 976.8 ns | 1,015.5 ns | 6 | 0.1101 | 423 B |
CustomDev2 | Core | Core | 964.3 ns | 18.826 ns | 23.809 ns | 954.1 ns | 935.5 ns | 1,015.6 ns | 5 | 0.1267 | 423 B |
CustomDev2WithMS | Core | Core | 1,136.0 ns | 21.914 ns | 27.714 ns | 1,138.1 ns | 1,099.9 ns | 1,200.2 ns | 9 | 0.1752 | 590 B |
FormatO | Core | Core | 1,201.5 ns | 16.262 ns | 15.211 ns | 1,202.3 ns | 1,178.2 ns | 1,225.5 ns | 11 | 0.0656 | 271 B |
FormatS | Core | Core | 993.5 ns | 19.272 ns | 24.372 ns | 999.4 ns | 954.2 ns | 1,029.5 ns | 6 | 0.0633 | 279 B |
FormatS_Verify | Core | Core | 1,003.1 ns | 17.577 ns | 16.442 ns | 1,009.2 ns | 976.1 ns | 1,024.3 ns | 6 | 0.0674 | 279 B |
CustomFormatK | Core | Core | 878.2 ns | 17.017 ns | 20.898 ns | 877.7 ns | 851.4 ns | 928.1 ns | 2 | 0.0555 | 215 B |
CustomFormatK_Verify | Core | Core | 863.6 ns | 3.968 ns | 3.712 ns | 863.0 ns | 858.6 ns | 870.8 ns | 1 | 0.0550 | 215 B |
কোড:
public class BenchmarkDateTimeFormat
{
public static DateTime dateTime = DateTime.Now;
[Benchmark]
public string CustomDev1()
{
var d = dateTime.ToUniversalTime();
var sb = new StringBuilder(20);
sb.Append(d.Year).Append("-");
if (d.Month <= 9)
sb.Append("0");
sb.Append(d.Month).Append("-");
if (d.Day <= 9)
sb.Append("0");
sb.Append(d.Day).Append("T");
if (d.Hour <= 9)
sb.Append("0");
sb.Append(d.Hour).Append(":");
if (d.Minute <= 9)
sb.Append("0");
sb.Append(d.Minute).Append(":");
if (d.Second <= 9)
sb.Append("0");
sb.Append(d.Second).Append("Z");
var text = sb.ToString();
return text;
}
[Benchmark]
public string CustomDev2()
{
var u = dateTime.ToUniversalTime();
var sb = new StringBuilder(20);
var y = u.Year;
var d = u.Day;
var M = u.Month;
var h = u.Hour;
var m = u.Minute;
var s = u.Second;
sb.Append(y).Append("-");
if (M <= 9)
sb.Append("0");
sb.Append(M).Append("-");
if (d <= 9)
sb.Append("0");
sb.Append(d).Append("T");
if (h <= 9)
sb.Append("0");
sb.Append(h).Append(":");
if (m <= 9)
sb.Append("0");
sb.Append(m).Append(":");
if (s <= 9)
sb.Append("0");
sb.Append(s).Append("Z");
var text = sb.ToString();
return text;
}
[Benchmark]
public string CustomDev2WithMS()
{
var u = dateTime.ToUniversalTime();
var sb = new StringBuilder(23);
var y = u.Year;
var d = u.Day;
var M = u.Month;
var h = u.Hour;
var m = u.Minute;
var s = u.Second;
var ms = u.Millisecond;
sb.Append(y).Append("-");
if (M <= 9)
sb.Append("0");
sb.Append(M).Append("-");
if (d <= 9)
sb.Append("0");
sb.Append(d).Append("T");
if (h <= 9)
sb.Append("0");
sb.Append(h).Append(":");
if (m <= 9)
sb.Append("0");
sb.Append(m).Append(":");
if (s <= 9)
sb.Append("0");
sb.Append(s).Append(".");
sb.Append(ms).Append("Z");
var text = sb.ToString();
return text;
}
[Benchmark]
public string FormatO()
{
var text = dateTime.ToUniversalTime().ToString("o");
return text;
}
[Benchmark]
public string FormatS()
{
var text = string.Concat(dateTime.ToUniversalTime().ToString("s"),"Z");
return text;
}
[Benchmark]
public string FormatS_Verify()
{
var text = string.Concat(dateTime.ToUniversalTime().ToString("s"), "Z");
return text;
}
[Benchmark]
public string CustomFormatK()
{
var text = dateTime.ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ssK");
return text;
}
[Benchmark]
public string CustomFormatK_Verify()
{
var text = dateTime.ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ssK");
return text;
}
}
https://github.com/dotnet/BenchmarkDotNet ব্যবহার করা হয়েছিল