rustfs/docs/benchmark/issue824-get-pressure-results-2026-07-05.md

Issue 824 GET Pressure Validation Results

Date: 2026-07-05

Scope

This run validates the current branch houseme/get-object-performance-hardening against the closest local historical GET metrics gate baseline.

Historical baseline:

• Path: docs/benchmark/rustfs-target-bench/get-metrics-gate-baseline/warp/median_summary.csv
• Git head: 92c50156a3cbbdfa454be1d14062098708851f51
• Parameters: 10MiB, warp, concurrency 32, duration 10s, rounds 3
• Median throughput: 5734882344.960000 B/s
• Median req/s: 546.920000
• Median latency: 48.700000 ms

Current run:

• Path: target/bench/issue824-get-metrics-gate-current-20260705
• Git head recorded by script: 55ad8df1c2f574178669052093aa185fae8185ca
• Branch/worktree contained staged and unstaged issue-824 changes.
• Parameters: 10MiB, warp, concurrency 32, duration 10s, rounds 3
• RustFS binary: target/release/rustfs
• Observability export: disabled
• Scanner: disabled
• Command:

scripts/run_get_metrics_gate_smoke.sh \
  --skip-build \
  --rustfs-bin target/release/rustfs \
  --size 10MiB \
  --concurrency 32 \
  --duration 10s \
  --rounds 3 \
  --round-cooldown-secs 1 \
  --baseline-csv docs/benchmark/rustfs-target-bench/get-metrics-gate-baseline/warp/median_summary.csv \
  --out-dir target/bench/issue824-get-metrics-gate-current-20260705 \
  --data-root /private/tmp/issue824-get-metrics-gate-current-20260705

Raw Rounds

round	throughput	req/s	avg latency	p90	p99
1	6505.75 MiB/s	650.57	47.9 ms	73.0 ms	103.9 ms
2	5631.35 MiB/s	563.13	52.1 ms	80.1 ms	106.3 ms
3	5830.30 MiB/s	583.03	52.9 ms	72.2 ms	92.7 ms

Corrected median from raw round data:

• Median throughput: 6113512652.800000 B/s (5830.30 MiB/s)
• Median req/s: 583.030000
• Median latency: 52.100000 ms
• Median p90: 73.000000 ms
• Median p99: 103.900000 ms

Baseline Comparison

metric	baseline	current	delta
throughput B/s	5734882344.960000	6113512652.800000	+6.60%
req/s	546.920000	583.030000	+6.60%
avg latency ms	48.700000	52.100000	+6.98%

Interpretation:

• No throughput regression was observed in this local release-binary smoke.
• Latency moved higher by 6.98% against the selected baseline. This is not a blocking regression by itself because host state, cooldown, and branch state differ, but it should be watched in the PR benchmark matrix.
• The run validates that the current changes do not obviously collapse the default 10MiB/C32 GET hot path.

Artifact Caveat

The script completed with exit code 0, but its generated warp/median_summary.csv and warp/baseline_compare.csv contain N/A values. The terminal summary and warp/round_results.csv preserved the actual round values. The corrected medians above are computed from those raw round logs.

Follow-up: fix scripts/run_object_batch_bench_enhanced.sh CSV parsing/report generation so the persisted median and baseline comparison match the terminal summary.