I/O Latency

JIT On vs JIT Off: PHP 8.5 JIT Performance Under I/O Latency (2026)

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In our previous benchmarks, we kept JIT disabled to isolate the impact of runtime architecture on performance. Readers immediately asked: “What happens when you turn JIT on?” Today, we answer that question definitively—by re-running our comprehensive four-environment, three-tier I/O latency test with PHP 8.5’s JIT compiler fully enabled. The results are surprising. JIT not only failed … Read more

The Latency Penalty: PHP 8.5 Application Server I/O Wait Benchmark (2026)

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In our previous benchmark, Swoole finished last in a light I/O workload, challenging its reputation as a performance monster. Readers immediately asked: “Is Swoole really that slow, or did the test simply not play to its strengths?” Today, we answer that question definitively—by putting all four application servers through escalating database latency and watching the … Read more