SSL Benchmark

Benchmark SSL/TLS handshake performance

Domain

Port

Iterations

Results

About

The SSL/TLS Benchmark tool measures the performance of your server's SSL/TLS implementation by simulating multiple concurrent connections and measuring handshake time, throughput, and connection establishment speed. It provides detailed metrics including time-to-first-byte (TTFB), handshake latency, and sustained throughput under load.

This benchmarking is essential for optimizing TLS performance, comparing the impact of different cipher suites, and validating that performance meets your SLA requirements. The results include recommendations for performance improvements such as enabling session resumption, switching to faster cipher suites, or optimizing certificate chain length.

How to Use

1Enter the domain name you want to benchmark
2Configure the number of concurrent connections and test duration
3Click "Run Benchmark" to start the performance test
4Review the results including handshake time, throughput, and performance recommendations

Use Cases

•Performance Baseline: Establish TLS performance baselines before and after configuration changes to measure improvement
•Cipher Suite Comparison: Benchmark different cipher suites to find the optimal balance of security and performance for your hardware
•Hardware Evaluation: Compare TLS performance across different servers or cloud instances to optimize infrastructure costs
•CDN Validation: Verify that your CDN is delivering TLS performance improvements over direct connections
•SLA Compliance: Validate that TLS handshake performance meets your service level agreement requirements

Tips & Best Practices

•Run benchmarks during low-traffic periods to get consistent results
•Test with multiple connection counts to understand performance under different load levels
•Compare benchmarks before and after enabling TLS 1.3 to measure the performance improvement
•Use the results to justify hardware upgrades when TLS performance is a bottleneck

Technical Details

●Metrics: Handshake latency (ms), Time-to-first-byte (ms), Throughput (MB/s), Connections per second

●Load Profiles: Single connection, 10 concurrent, 50 concurrent, 100 concurrent

●Cipher Testing: Benchmark specific cipher suites to compare performance impact

●Protocol Comparison: Compare TLS 1.2 vs TLS 1.3 performance characteristics

Frequently Asked Questions

A good TLS handshake time is under 50ms for TLS 1.3 and under 100ms for TLS 1.2 on modern hardware. Handshake times above 200ms indicate potential optimization opportunities such as enabling session resumption, switching to faster cipher suites, or upgrading hardware. Mobile clients typically experience 2-3x higher latency due to network round trips.

TLS 1.3 reduces the handshake from 2 round trips (TLS 1.2) to 1 round trip, cutting handshake latency by approximately 50%. It also removes obsolete cipher suites and simplifies the handshake process. For repeated connections, TLS 1.3 supports 0-RTT resumption, potentially eliminating handshake latency entirely for returning clients.

Synthetic benchmarks (like this tool) provide consistent, repeatable results for comparing configurations. Real-user monitoring (RUM) captures actual performance in production. Use synthetic benchmarks for development and testing, and RUM for production monitoring. Both approaches are complementary and provide different insights.