spdk/spdk

Health v2 · maintenance only

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3646 stars · 1375 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

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

library · maturity stable

database networking concurrency developer-tools sdk developer-tools performance operating-systems infrastructure-as-code bsd c cpp python go nvme nvme-of iscsi vhost user-space-drivers storage dpdk poll-mode block-devices high-performance linux

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