[GH-ISSUE #4505] [Feature Request]: Add client NoF read/write metrics #1147

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opened 2026-10-29 21:23:20 +00:00 by bsakaguchi · 1 comment

bsakaguchi commented

2026-10-29 21:23:20 +00:00

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Originally created by @cage-goat on GitHub (Oct 8, 2026).
Original GitHub issue: https://github.com/kvcache-ai/Mooncake/issues/4505

Describe your feature request

Mooncake Store currently lacks dedicated client-side metrics for NoF I/O. Existing transfer metrics do not directly reflect completed SPDK I/O and NoF errors, making it difficult to monitor NoF bandwidth, IOPS, and failures.

Add metrics that separately track reads and writes:

Bytes and I/O counts from successful completions.
Error counts covering submission and completion failures.

Aggregate these counters per client across all NoF segments and expose them through the existing /metrics and /metrics/summary endpoints.

Before submitting a new issue...

Make sure you already searched for relevant issues and read the documentation

Originally created by @cage-goat on GitHub (Oct 8, 2026). Original GitHub issue: https://github.com/kvcache-ai/Mooncake/issues/4505 ### Describe your feature request Mooncake Store currently lacks dedicated client-side metrics for NoF I/O. Existing transfer metrics do not directly reflect completed SPDK I/O and NoF errors, making it difficult to monitor NoF bandwidth, IOPS, and failures. Add metrics that separately track reads and writes: - Bytes and I/O counts from successful completions. - Error counts covering submission and completion failures. Aggregate these counters per client across all NoF segments and expose them through the existing `/metrics` and `/metrics/summary` endpoints. ### Before submitting a new issue... - [x] Make sure you already searched for relevant issues and read the [documentation](https://kvcache-ai.github.io/Mooncake/)

bsakaguchi closed this issue

2026-10-29 21:23:21 +00:00

bsakaguchi commented

2026-10-29 21:23:21 +00:00

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@github-actions[bot] commented on GitHub (Oct 8, 2026):

Thanks for opening this issue, @cage-goat!

Field	Value
Issue	#4505
GitHub user ID	`318081269`
Reporter	@cage-goat

A maintainer will triage this when possible. To help us respond faster, please include:

Mooncake version or commit SHA
Environment (OS, CUDA/driver, RDMA stack if relevant)
Steps to reproduce and expected vs. actual behavior

Useful links: Documentation · Contributing guide

This message was posted automatically by the issue bot.

@github-actions[bot] commented on GitHub (Oct 8, 2026): Thanks for opening this issue, @cage-goat! | Field | Value | |-------|-------| | **Issue** | #4505 | | **GitHub user ID** | `318081269` | | **Reporter** | @cage-goat | A maintainer will triage this when possible. To help us respond faster, please include: - Mooncake version or commit SHA - Environment (OS, CUDA/driver, RDMA stack if relevant) - Steps to reproduce and expected vs. actual behavior Useful links: [Documentation](https://kvcache-ai.github.io/Mooncake/) · [Contributing guide](https://github.com/kvcache-ai/Mooncake/blob/main/CONTRIBUTING.md) > This message was posted automatically by the issue bot.