{"id":27858439,"url":"https://github.com/roboplc/jmeter","last_synced_at":"2025-06-24T09:37:18.118Z","repository":{"id":234971076,"uuid":"789832643","full_name":"roboplc/jmeter","owner":"roboplc","description":"Jitter meter for Linux hosts","archived":false,"fork":false,"pushed_at":"2024-06-20T22:19:40.000Z","size":225,"stargazers_count":3,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"main","last_synced_at":"2025-05-04T14:11:19.850Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"Rust","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"apache-2.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/roboplc.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null}},"created_at":"2024-04-21T17:15:02.000Z","updated_at":"2024-07-16T12:15:42.000Z","dependencies_parsed_at":"2024-05-19T02:27:49.082Z","dependency_job_id":"d7b7d1c2-71e4-438c-bd25-2b175f6b5197","html_url":"https://github.com/roboplc/jmeter","commit_stats":null,"previous_names":["roboplc/jmeter"],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/roboplc/jmeter","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/roboplc%2Fjmeter","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/roboplc%2Fjmeter/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/roboplc%2Fjmeter/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/roboplc%2Fjmeter/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/roboplc","download_url":"https://codeload.github.com/roboplc/jmeter/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/roboplc%2Fjmeter/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":261644389,"owners_count":23189047,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2025-05-04T14:10:32.296Z","updated_at":"2025-06-24T09:37:18.097Z","avatar_url":"https://github.com/roboplc.png","language":"Rust","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Jitter meter for Linux hosts\n\nGeneral-purpose Linux distributions require special setup for real-time\napplications. If installed on general-purpose hardware, some aspects may be\nalso tuned. See [Configuring the system for\nRoboPLC](https://info.bma.ai/en/actual/roboplc/config.html).\n\nFurthermore, the applications can behave differently on different CPU cores due\nto IRQs or little-big architecture peculiarities.\n\nThis tool measures jitters for each CPU core (difference between specified and\nreal loop time) and provides a report.\n\n## Usage\n\nClone the repository to the local machine.\n\n### With RoboPLC Manager installed\n\nIf RoboPLC Manager is installed on the target machine, the tool can be flashed\nwith the following command (see\n[Flashing](https://info.bma.ai/en/actual/roboplc/flashing.html)):\n\n```bash\nrobo flash\n```\n\n(either edit `robo.toml` or use proper command-line arguments to specify the\ndestination). After flashing, the report can be viewed at RoboPLC Manager\n`Metrics` page.\n\n\u003cimg\nsrc=\"https://raw.githubusercontent.com/roboplc/jmeter/main/img/manager-jitter-metrics.png\"\nwidth=\"400\" /\u003e\n\n### Without RoboPLC Manager installed\n\nInstall Rust and compile:\n\n```bash\ncurl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh\ncargo build --release\n```\n\nCopy the binary to the target machine and run it. The report can be obtained with\n\n```bash\ncurl -s http://IP:9000\n```\n\nand optionally connected to any Prometheus-compatible monitoring system.\n\n\n### Loop interval\n\nBy default, the program uses 1000us (1ms) loop interval. It can be changed with\n\"INTERVAL\" environment variable at compile-time:\n\n```bash\nINTERVAL=500 cargo build --release # for 500us\n```\n\nIf using [cross](https://crates.io/crates/cross) for cross-compilation, the\nvariable must be set as a Docker option:\n\n```bash\nDOCKER_OPTS=\"-e INTERVAL=500\" cross build --release\n```\n\n(the provided script `flash.sh` can help with this as well).\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Froboplc%2Fjmeter","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Froboplc%2Fjmeter","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Froboplc%2Fjmeter/lists"}