Skip to main content

system · Command reference

qzx testDiskSpeed

What it does

Measures sequential durable-write and buffered-read throughput in MiB/s using a uniquely named temporary file

Command maturity: Alpha

Available for real use and feedback while its interface and behavior can still evolve. This is the current development-checkout assessment. Every future immutable release tag preserves the exact assessment shipped by that version. Available in PyPI 0.2.2.0.8. This page documents the 0.2.2.0.8 alpha development checkout.

Behavior and built-in protections

Live mode applies the changes you request

Direct execution for this operation

Works without invoking native programs

Works without network access

No elevation required by design

Creates one uniquely named temporary fixture so existing data is never overwritten, limits it to 1-1024 MiB, verifies bytes read, and removes it on every exit path. A cleanup failure reports the exact recovery path.

This safety classification was reviewed by OpenAI GPT-5.6 Pro against implementation digest sha256:87becda5cae67b2de08e8a74fd4f9b348ed01cb8cbf0d19bf5575efc81e0dfd5 on 2026-08-25.

Exact syntax

qzx testDiskSpeed [test_path] [size_mib] --json

Parameters

Swipe or use the horizontal scrollbar to see every column.

NameTypeRequiredDefaultDescription
test_pathstrNo"."Existing directory whose filesystem will be benchmarked
size_mibintNo50Temporary fixture size in MiB, from 1 through 1024

Input examples

qzx testDiskSpeed

Benchmark the current filesystem with a 50 MiB fixture

qzx testDiskSpeed C:/temp --size-mib 100

Benchmark C:/temp with a unique 100 MiB temporary fixture

For the complete structured payload, add --json: qzx testDiskSpeed [test_path] [size_mib] --json

Representative output example

This illustrative JSON is derived from the current implementation-backed result contract. It shows what the command can return without claiming a recorded execution; values vary with inputs, host, permissions, and optional tools.

Example command: qzx testDiskSpeed --json

{
    "success": true,
    "message": "Measures sequential durable-write and buffered-read throughput in MiB/s using a uniquely named temporary file. In this illustrative example, the command completed successfully.",
    "meta": {
        "command": "testDiskSpeed",
        "command_maturity": {
            "stage": "alpha",
            "label": "Alpha",
            "sequence": 2,
            "public_executable": true,
            "stability": "interface_may_change",
            "summary": "Available for real use and feedback while its interface and behavior can still evolve.",
            "promotion_review_required": false,
            "assessment_scope": "development_checkout"
        },
        "duration_ms": 0,
        "schema_version": 1
    },
    "details": {
        "temporary_fixture": "Example value",
        "chunk_size_bytes": 4096
    },
    "fixture_size": {
        "mebibytes": [
            {
                "name": "example",
                "status": "ok"
            }
        ],
        "bytes": [
            {
                "name": "example",
                "status": "ok"
            }
        ]
    },
    "read": {
        "mebibytes_per_second": "Example value",
        "duration_seconds": 42.7,
        "bytes_verified": "Example value"
    },
    "test_directory": "C:\\project\\example.txt",
    "write": {
        "mebibytes_per_second": "Example value",
        "duration_seconds": 42.7,
        "durability": "Example value"
    }
}
View the JSON result contract
{
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "type": "object",
    "required": [
        "success",
        "message",
        "meta"
    ],
    "properties": {
        "success": {
            "type": "boolean"
        },
        "message": {
            "type": "string"
        },
        "meta": {
            "type": "object",
            "required": [
                "command",
                "command_maturity",
                "duration_ms",
                "schema_version"
            ],
            "properties": {
                "command": {
                    "type": "string"
                },
                "command_maturity": {
                    "type": "object",
                    "required": [
                        "stage",
                        "label",
                        "sequence",
                        "public_executable",
                        "stability",
                        "summary",
                        "promotion_review_required",
                        "assessment_scope"
                    ],
                    "properties": {
                        "stage": {
                            "type": "string"
                        },
                        "label": {
                            "type": "string"
                        },
                        "sequence": {
                            "type": "integer"
                        },
                        "public_executable": {
                            "type": "boolean"
                        },
                        "stability": {
                            "type": "string"
                        },
                        "summary": {
                            "type": "string"
                        },
                        "promotion_review_required": {
                            "type": "boolean"
                        },
                        "assessment_scope": {
                            "type": "string"
                        },
                        "note": {
                            "type": "string"
                        },
                        "review": {
                            "type": "object",
                            "required": [
                                "reviewed_on",
                                "rationale",
                                "evidence"
                            ],
                            "properties": {
                                "reviewed_on": {
                                    "type": "string",
                                    "format": "date"
                                },
                                "rationale": {
                                    "type": "string"
                                },
                                "evidence": {
                                    "type": "array",
                                    "minItems": 1,
                                    "items": {
                                        "type": "string"
                                    }
                                },
                                "replacement": {
                                    "type": "string"
                                }
                            },
                            "additionalProperties": false
                        }
                    },
                    "additionalProperties": true
                },
                "duration_ms": {
                    "type": "number"
                },
                "schema_version": {
                    "type": "integer"
                }
            },
            "additionalProperties": true
        },
        "details": {
            "type": "object",
            "properties": {
                "temporary_fixture": {
                    "type": "string"
                },
                "chunk_size_bytes": []
            },
            "additionalProperties": true
        },
        "fixture_size": {
            "type": "object",
            "properties": {
                "mebibytes": [],
                "bytes": []
            },
            "additionalProperties": true
        },
        "read": {
            "type": "object",
            "properties": {
                "mebibytes_per_second": [],
                "duration_seconds": [],
                "bytes_verified": []
            },
            "additionalProperties": true
        },
        "test_directory": [],
        "write": {
            "type": "object",
            "properties": {
                "mebibytes_per_second": [],
                "duration_seconds": [],
                "durability": {
                    "type": "string"
                }
            },
            "additionalProperties": true
        }
    },
    "additionalProperties": true
}

Errors and limits

The public contract requires success=false and a descriptive message on failure. This catalog does not yet declare a command-specific error taxonomy; inspect the result and do not invent error codes.

QZX is alpha software. Optional dependencies, permissions, and host capabilities can change the result.

Evidence workflow: requires an isolated disposable target.

Evidence and provenance

Tests
No command-specific test file with the same module name was found; this does not prove that all coverage is absent.
Documentation channel
Development documentation 0.2.2.0.8 · main · sha256:9aa902dfb6b006017e52972bf7871fef49b03ec24ff80741231d743d0354bfc2
Availability
0.2.2.0.8 or earlier

Keep exploring

Related commands

These commands also belong to the system category. Compare them to choose the operation that best fits your task.

Explore all QZX commands