# spdk/spdk

Storage Performance Development Kit

Repository: https://github.com/spdk/spdk
Canonical: https://ross.abutalabs.com/products/spdk
Homepage: https://spdk.io/
Language: C
License: NOASSERTION
License Family: other
Last push: 2026-08-26T08:04:01+00:00

## Health v2 (maintenance only)
Score: 86/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 62, longevity 100
- inputs: {"age_days": 4069, "days_push": 7, "days_rel": 96, "gap_med": 119, "n_releases_24m": 6}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3646, forks 1375 (observed 2026-08-28T04:08:12.925882+00:00)

## What it is
SPDK is a set of C libraries, drivers, and tools for building high-performance, scalable user-mode storage applications. It moves storage drivers (NVMe, I/OAT, Virtio) into userspace with polled-mode, thread-per-core, lockless designs to eliminate kernel context switches and interrupt overhead.

## Use cases
- build a high-performance NVMe driver in userspace
- run an NVMe over Fabrics target
- run an iSCSI target in userspace
- expose virtual disks to VMs with vhost
- benchmark and tune storage I/O performance
- write custom block device modules
- implement a user-mode storage application with polled-mode I/O

## When to choose
- you need maximum storage I/O performance with minimal latency
- you are building NVMe-oF, iSCSI, or vhost targets
- you want user-space NVMe drivers with a thread-per-core architecture
- you need a production-proven, well-documented storage development kit

## When to avoid
- you only need simple file or block I/O without extreme performance requirements
- your platform is not Linux or FreeBSD
- you cannot dedicate CPU cores to polling
- you need a portable cross-platform storage library

## Facets
- artifact type: library
- maturity: stable
- function: database, networking, concurrency, developer-tools, sdk
- domain: developer-tools, performance, operating-systems, infrastructure-as-code
- platform: bsd, c, cpp, python, go
- tags: nvme, nvme-of, iscsi, vhost, user-space-drivers, storage, dpdk, poll-mode, block-devices, high-performance, linux

## Member repositories
- spdk/spdk (main) score 86

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:12.925882+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:31:44.489488+00:00, confidence not recorded.
  - readme: https://github.com/spdk/spdk (fetched 2026-08-28T04:08:12.925882+00:00, sha df7d9d8a4bfc)
  - homepage: https://spdk.io/ (fetched 2026-08-29T09:26:04.274851+00:00, sha d3e84bbfdd7d)
  - site_page: https://spdk.io/releases (fetched 2026-08-29T09:26:04.278772+00:00, sha f43df28c98ae)
  - site_page: https://spdk.io/doc (fetched 2026-08-29T09:26:04.280482+00:00, sha f0076ac5f5cd)
  - site_page: https://spdk.io/doc/files.html (fetched 2026-08-29T09:26:04.282337+00:00, sha aa06798eee4d)
- Data as of 2026-08-30T08:39:29.467469+00:00.