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juliuskovaljuliuskoval
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add benchmarks
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‎test/Benchmarks/Exporter/ProtobufOtlpLogSerializerBenchmarks.cs‎

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// Copyright The OpenTelemetry Authors
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// SPDX-License-Identifier: Apache-2.0
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extern alias OpenTelemetryProtocol;
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using BenchmarkDotNet.Attributes;
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using Benchmarks.Helper;
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using OpenTelemetry.Logs;
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using OpenTelemetryProtocol::OpenTelemetry.Exporter.OpenTelemetryProtocol.Implementation;
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using OpenTelemetryProtocol::OpenTelemetry.Exporter.OpenTelemetryProtocol.Implementation.Serializer;
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/*
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BenchmarkDotNet v0.15.8, Windows 11 (10.0.26200.8457/25H2/2025Update/HudsonValley2)
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AMD Ryzen 7 9800X3D 4.70GHz, 1 CPU, 16 logical and 8 physical cores
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.NET SDK 10.0.301
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[Host] : .NET 10.0.9 (10.0.9, 10.0.926.27113), X64 RyuJIT x86-64-v4
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DefaultJob : .NET 10.0.9 (10.0.9, 10.0.926.27113), X64 RyuJIT x86-64-v4
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| Method | AttributeCount | KvListAttributeCount | Mean | Error | StdDev | Median | Allocated |
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|--------------- |--------------- |--------------------- |---------:|---------:|---------:|---------:|----------:|
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| WriteLogRecord | 4 | 0 | 113.8 ns | 1.87 ns | 1.57 ns | 113.9 ns | 32 B |
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| WriteLogRecord | 4 | 2 | 168.9 ns | 3.15 ns | 8.31 ns | 166.4 ns | 32 B |
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| WriteLogRecord | 4 | 4 | 224.2 ns | 4.55 ns | 12.84 ns | 219.1 ns | 32 B |
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| WriteLogRecord | 4 | 8 | 254.4 ns | 5.11 ns | 10.99 ns | 252.6 ns | 32 B |
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| WriteLogRecord | 8 | 0 | 193.0 ns | 3.88 ns | 9.58 ns | 188.7 ns | 32 B |
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| WriteLogRecord | 8 | 2 | 239.4 ns | 2.89 ns | 2.26 ns | 239.3 ns | 32 B |
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| WriteLogRecord | 8 | 4 | 297.5 ns | 5.87 ns | 10.58 ns | 294.2 ns | 32 B |
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| WriteLogRecord | 8 | 8 | 340.9 ns | 8.21 ns | 23.03 ns | 332.2 ns | 32 B |
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| WriteLogRecord | 16 | 0 | 365.1 ns | 7.95 ns | 22.16 ns | 357.4 ns | 32 B |
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| WriteLogRecord | 16 | 2 | 427.9 ns | 11.96 ns | 34.70 ns | 417.5 ns | 32 B |
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| WriteLogRecord | 16 | 4 | 476.7 ns | 15.13 ns | 44.62 ns | 480.0 ns | 32 B |
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| WriteLogRecord | 16 | 8 | 471.3 ns | 9.11 ns | 12.16 ns | 466.0 ns | 32 B |
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*/
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namespace Benchmarks.Exporter;
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[MemoryDiagnoser(false)]
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public class ProtobufOtlpLogSerializerBenchmarks
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{
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private static readonly KeyValuePair<string, object?>[] AllAttributes =
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[
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new("http.request.method", "GET"),
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new("http.route", "/api/orders/{id}"),
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new("http.response.status_code", 200L),
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new("url.full", "https://shop.example.com/api/orders/42"),
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new("url.scheme", "https"),
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new("server.address", "shop.example.com"),
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new("server.port", 443L),
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new("client.address", "203.0.113.7"),
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new("user_agent.original", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7)"),
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new("network.protocol.version", "1.1"),
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new("enduser.id", "user-8f3a7b4c"),
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new("session.id", "9a8d1f3e-4b2c-4e15-9a4f-1b2c3d4e5f6a"),
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new("db.system", "postgresql"),
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new("db.namespace", "orders"),
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new("db.operation.name", "SELECT"),
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new("db.query.text", "SELECT * FROM orders WHERE id = $1"),
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new("messaging.system", "rabbitmq"),
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new("messaging.destination.name", "orders.events"),
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new("messaging.message.id", "msg-0abcdef1234567890"),
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new("exception.type", "System.TimeoutException"),
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new("exception.message", "The operation has timed out."),
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new("code.function", "ProcessOrder"),
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new("code.namespace", "Checkout.Api.Orders"),
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new("code.filepath", "/src/Checkout.Api/Orders/OrderProcessor.cs"),
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new("code.lineno", 142L),
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new("thread.id", 27L),
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new("thread.name", "worker-3"),
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new("retry.count", 2L),
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new("cache.hit", true),
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new("response.latency_ms", 18.7),
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new("feature.flag.new_checkout", true),
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new("tenant.id", "tenant-123456789012"),
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];
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private readonly byte[] buffer = new byte[64 * 1024];
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private readonly SdkLimitOptions sdkLimitOptions = new();
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private readonly ExperimentalOptions experimentalOptions = new();
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private LogRecord logRecord = null!;
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[Params(4, 8, 16)]
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public int AttributeCount { get; set; }
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// 0 means no kvlist attribute is added; otherwise a single flat (depth-1)
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// kvlist attribute with this many entries is appended to the scalar ones.
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[Params(0, 2, 4, 8)]
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public int KvListAttributeCount { get; set; }
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[GlobalSetup]
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public void Setup()
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{
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this.logRecord = LogRecordHelper.CreateTestLogRecord();
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var includeKvList = this.KvListAttributeCount > 0;
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var attributes = new KeyValuePair<string, object?>[this.AttributeCount + (includeKvList ? 1 : 0)];
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var count = Math.Min(this.AttributeCount, AllAttributes.Length);
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for (var i = 0; i < count; i++)
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{
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attributes[i] = AllAttributes[i];
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}
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for (var i = count; i < this.AttributeCount; i++)
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{
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attributes[i] = new KeyValuePair<string, object?>($"custom.attribute.{i}", Guid.NewGuid().ToString());
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}
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if (includeKvList)
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{
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attributes[this.AttributeCount] = new KeyValuePair<string, object?>("kvlist", BuildKvList(this.KvListAttributeCount));
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}
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this.logRecord.Attributes = attributes;
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}
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[Benchmark]
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public int WriteLogRecord()
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=> ProtobufOtlpLogSerializer.WriteLogRecord(this.buffer, 0, this.sdkLimitOptions, this.experimentalOptions, this.logRecord);
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private static List<KeyValuePair<string, object?>> BuildKvList(int entryCount)
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{
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var list = new List<KeyValuePair<string, object?>>(entryCount);
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for (var i = 0; i < entryCount; i++)
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{
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object value = (i % 4) switch
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{
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0 => "value",
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1 => (long)i,
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2 => i % 2 == 0,
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_ => i * 1.5,
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};
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list.Add(new KeyValuePair<string, object?>($"key.{i}", value));
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}
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return list;
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}
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}

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