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RunsOn m8azn.xlarge · gp3 1000 MiB/s vs Namespace 4x16 x64

RunsOn does each build for 1.5× less; on time, Namespace is faster on the Rust and Docker builds and tied on the TypeScript build. Both 4 vCPU x64.

All three builds 1.5× cheaper on RunsOn: $0.0645 vs $0.0966Namespace 1.3× faster: 7m 26s vs 9m 21s
Rust build 1.5× cheaper on RunsOn: $0.0136 vs $0.0208Namespace 1.2× faster: 1m 38s vs 1m 54s
TypeScript build 1.5× cheaper on RunsOn: $0.0072 vs $0.0108about the same time: 45s · 47s
Docker build 1.5× cheaper on RunsOn: $0.0437 vs $0.0650Namespace 1.3× faster: 5m 01s vs 6m 42s

Side by side

Every measurement both runners share, cost first. The dot marks the better value; gap is the larger over the smaller.

Measurement RunsOn Namespace Gap
Cost
Cost per Rust build $0.0136 $0.0208 1.5× RunsOn
Cost per TypeScript build $0.0072 $0.0108 1.5× RunsOn
Cost per Docker build $0.0437 $0.0650 1.5× RunsOn
Price per minute $0.0047 $0.0120 overage rate 2.5× RunsOn
Real builds, wall time
Rust build (spotify-⁠player) 1m 54s 1m 38s 1.2× Namespace
TypeScript build (opencode) 45s 47s ≈ even
Docker build (PostHog) 6m 42s 5m 01s 1.3× Namespace
CPU & memory
PassMark single-⁠thread (points) 4,257 4,700 1.1× Namespace
PassMark CPU Mark, all cores (points) 15,102 16,176 1.1× Namespace
sysbench CPU, 1 thread (events/s) 6,220 7,051 1.1× Namespace
7-⁠Zip compression (MIPS) 31,030 33,428 1.1× Namespace
Memory read bandwidth 40.8 GiB/s 44.8 GiB/s 1.1× Namespace
Measurement RunsOn Namespace Gap
Workspace disk (fio)
Random read, 4k QD32 (IOPS) 15,994 1,011,926 63.3× Namespace
Random write, 4k QD32 (IOPS) 15,991 436,056 27.3× Namespace
Random read, 4k QD1 (IOPS) 1,775 78,615 44.3× Namespace
QD1 read latency, p99 856 µs 12 µs 70.2× Namespace
Sequential read 1,002 MiB/s 4.1 GiB/s 4.2× Namespace
Sequential write 1,001 MiB/s 2.9 GiB/s 3.0× Namespace
Sync write, 4k + fdatasync (IOPS) 540 17,844 33.0× Namespace
Network, cache & Docker
Download from GitHub 256 MiB/s 202 MiB/s 1.3× RunsOn
Cache restore, 4 GB (actions/cache) 10s 28s 2.8× RunsOn
Cache save, 4 GB (actions/cache) 14s 14s ≈ even
docker pull 5.0s 4.2s 1.2× Namespace
Database
pgbench read/write (TPS) 3,758 8,463 2.3× Namespace
pgbench read-⁠only (TPS) 163,575 67,294 2.4× RunsOn
Queue
Queue under burst load 20s 2m 23s plan limit —
  • ≈ even: under 5% apart, or a build inside both runners' run-to-run spread
  • Queue: identical jobs queued at the same instant (burst suite)
  • Queue: not compared. Namespace's burst ran 4 jobs at a time, the concurrency limit of the plan this benchmark account is on
  • RunsOn at EC2 spot, its default (7-day average of the cheapest us-east-1 zone's spot price, fetched 5 Oct 2026); the jobs ran on spot
  • Cost: a managed SaaS runner against RunsOn self-hosted on your AWS account; the effort of running it was not measured

Other head-to-heads