Custom command responses for HSCAN/ZSCAN/BLPOP

[adam-fowler]

Also convert all command tests to use testCommandEncodesDecodes

[github-actions]

❌ Pull request has performance regressions ❌

Summary

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Threshold deviations for ValkeyBenchmarks:Connection: GET benchmark – NoOpTracer
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Malloc (total) (#, %)	main	pull_request	Difference %	Threshold %
p50	8375	9975	19	5

New baseline 'pull_request' is WORSE than the 'main' baseline thresholds.

Full Benchmark Comparison

Comparing results between 'main' and 'pull_request'

Host 'f26e441e02d6' with 4 'x86_64' processors with 15 GB memory, running:
#18~24.04.1-Ubuntu SMP Sat Jun 28 04:46:03 UTC 2025

ValkeyBenchmarks

Client: GET benchmark metrics

Malloc (total): results within specified thresholds, fold down for details.

Malloc (total) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	82	84	84	87	87	87	87	6
pull_request	84	84	86	87	88	88	88	6
Δ	2	0	2	0	1	1	1	0
Improvement %	-2	0	-2	0	-1	-1	-1	0

Client: GET benchmark | parallel 20 | 20 concurrent connections metrics

Malloc (total): results within specified thresholds, fold down for details.

Malloc (total) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	95	99	103	106	108	110	110	24
pull_request	97	102	104	107	110	118	118	24
Δ	2	3	1	1	2	8	8	0
Improvement %	-2	-3	-1	-1	-2	-7	-7	0

Connection: GET benchmark metrics

Malloc (total): results within specified thresholds, fold down for details.

Malloc (total) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	4	4	4	4	4	4	4	8
pull_request	4	4	4	4	4	4	4	8
Δ	0	0	0	0	0	0	0	0
Improvement %	0	0	0	0	0	0	0	0

Connection: GET benchmark – NoOpTracer metrics

Malloc (total): results within specified thresholds, fold down for details.

Malloc (total) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	7	8	8	10	10	10	10	8
pull_request	7	8	10	10	10	10	10	7
Δ	0	0	2	0	0	0	0	-1
Improvement %	0	0	-25	0	0	0	0	-1

Connection: Pipeline array benchmark metrics

Malloc (total): results within specified thresholds, fold down for details.

Malloc (total) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	33	33	33	34	34	34	34	6
pull_request	33	33	34	34	34	34	34	6
Δ	0	0	1	0	0	0	0	0
Improvement %	0	0	-3	0	0	0	0	0

Connection: Pipeline benchmark metrics

Malloc (total): results within specified thresholds, fold down for details.

Malloc (total) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	33	33	33	34	34	34	34	5
pull_request	33	33	33	34	34	34	34	5
Δ	0	0	0	0	0	0	0	0
Improvement %	0	0	0	0	0	0	0	0

HashSlot – {user}.whatever metrics

Malloc (total): results within specified thresholds, fold down for details.

Malloc (total) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	0	0	0	0	0	0	0	18
pull_request	0	0	0	0	0	0	0	19
Δ	0	0	0	0	0	0	0	1
Improvement %	0	0	0	0	0	0	0	1

ValkeyCommandEncoder – Command with 7 words metrics

Malloc (total): results within specified thresholds, fold down for details.

Malloc (total) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	0	0	0	0	0	0	0	738
pull_request	0	0	0	0	0	0	0	742
Δ	0	0	0	0	0	0	0	4
Improvement %	0	0	0	0	0	0	0	4

ValkeyCommandEncoder – Simple GET metrics

Malloc (total): results within specified thresholds, fold down for details.

Malloc (total) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	0	0	0	0	0	0	0	1880
pull_request	0	0	0	0	0	0	0	1889
Δ	0	0	0	0	0	0	0	9
Improvement %	0	0	0	0	0	0	0	9

ValkeyCommandEncoder – Simple MGET 15 keys metrics

Malloc (total): results within specified thresholds, fold down for details.

Malloc (total) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	0	0	0	0	0	0	0	360
pull_request	0	0	0	0	0	0	0	357
Δ	0	0	0	0	0	0	0	-3
Improvement %	0	0	0	0	0	0	0	-3