zeemo

Engine · Zig · engine: io_uring

Bare-metal Zig HTTP/1.1 server on io_uring. One reactor process per logical CPU via SO_REUSEPORT, hand-written incremental parser, registered provided-buffer rings.

Achievements

🥈 1 Silver. Top three of a field, taken in this entry's own league: the family composite, the same composite among entries written in the same language, and each test profile it is scored on. Every field is the one the badges publish, so a medal and a badge always say the same thing. How medals are awarded.

Medal	Award	Field	Rank
🥈 Silver	Test profile	Connection · Baseline	2 of 26

Composite rank

Each profile of a family is worth 100 to the entry that leads it, and the composite is the sum over the family, less 2.5% for each of routing, middleware, request and response the entry does not do for you - its completeness factor, which the WebSocket and gRPC families do not carry. The field is this entry's own league: engines and reverse proxies are scored apart from frameworks. How it works.

Family	Rank	Composite
HTTP/1.1	12 of 26	3773

Every result

Alpha Round, 5 runs. Requests per second is the best of three; latency, CPU and memory come from that run.

Category	Profile	Conns	Req/sec	Avg	p99	CPU	Memory
Connection	Baseline	4,096	4,422,489	925us	1.22ms	6410.6%	182MiB
Connection	Pipelined	4,096	49,860,224	1.31ms	2.14ms	6407.1%	106MiB
Connection	Short-lived	4,096	2,606,127	1.43ms	2.04ms	5920.9%	130MiB
Efficiency	Latency-10K	1,024	9,979	79.1us	114.0us	29.1%	77MiB
Efficiency	Latency-1M	1,024	997,821	83.9us	152.0us	2117.5%	70MiB

Compared with

The Zig entries around zeemo on the HTTP/1.1 composite, and the one leading them. The last column shows every profile side by side.

Entry	Composite	vs zeemo
swerver	6825	+81%	head to head
zix	4839	+28%	head to head
libxev	3920	+4%	head to head

Compare zeemo with any Zig entry · Compare zeemo with any entry, in any language · Every Zig entry, ranked

Results updated 2026-09-07 · How the benchmark is run · The machine · Add or fix an entry