AI-assisted review
Instance benchmarkDigitalOcean
s-4vcpu-8gb
The complete benchmark report. Every workload, in one place.
4 vCPU7.8 GiB RAMlon1x86_64
Within-run medians of passed repetitions. Some workloads are incomplete. One recorded test window; limitations and review details below.
01 /
CPU performance
sysbench prime workload · recorded thread counts.
340.89events/s
1 threads
1 threads
1,316.7events/s
4 threads
4 threads
- 1 threads340.89
- 4 threads1,316.7
Within-run medians; thread counts retain their recorded allocation.
Compression · 160.94 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read5,320.72 MiB/s
Write5,621.51 MiB/s
- Read5,320.72
- Write5,621.51
Memory copy was not measured.
03 /
Disk performance
fio · direct I/O · recorded sequential and random workloads.
| Workload | Read bandwidth | Write bandwidth | Read IOPS | Write IOPS | Read p95 | Write p95 |
|---|---|---|---|---|---|---|
| write | Not measured | 1,867.69 MB/s | Not measured | 1,781.168 IOPS | Not measured | 38,010.88 us |
| read | 3,691.299 MB/s | Not measured | 3,520.297 IOPS | Not measured | 20,316.16 us | Not measured |
| randwrite | Not measured | 232.744 MB/s | Not measured | 56,822.173 IOPS | Not measured | 856.064 us |
| randread | 310.79 MB/s | Not measured | 75,876.542 IOPS | Not measured | 651.264 us | Not measured |
| randrw | 191.375 MB/s | 82.098 MB/s | 46,722.409 IOPS | 20,043.499 IOPS | 831.488 us | 626.688 us |
Read, write and mixed workloads are recorded separately. These are medians of measured repetitions.
04 /
Network performance
Source: lon1 · controlled London endpoints.
| Destination | Download (receiver) | Upload (receiver) | Round-trip mean |
|---|---|---|---|
| London endpoint 1 | 100.12 Mbit/s | 100.062 Mbit/s | 0.995 ms |
| London endpoint 2 | 100.134 Mbit/s | 100.104 Mbit/s | 3.366 ms |
100 Mbit/s rate setting · requested 64 MiB per direction; actual bytes can exceed the target. These routes do not measure maximum link capacity. Jitter and packet-loss scores are not inferred.
05 /
PostgreSQL performance
pgbench · recorded memory and storage dataset profiles.
| Dataset profile | Transactions / sec | Average latency |
|---|---|---|
| memory | 2,530.854 transactions/s | 1.577 ms |
| storage | 1,942.414 transactions/s | 2.056 ms |
Within-run medians. PostgreSQL latency percentiles were not measured.
06 /
Consistency over time
Recorded outcomes only; no synthetic time-series.
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| 24-hour consistency · repetition 1 | skipped | No measured score | Not measured |
This pilot does not establish 24-hour consistency or long-term reliability.
07 /
Inspect the evidence.
Recorded environment, reviewed measurements, and versioned source.
OSUbuntu 24.04.5 LTS
Architecturex86_64
Methodpilot-1
Deployments1
Window1856 seconds
AI-assisted review · Codex AI-assisted evidence review (user-delegated) · Reviewed 17 Oct 2026 · Published 17 Oct 2026 · Revision 1
Review and measurement limits
- Single deployment; not an independent three-instance cohort.
- No hardware attestation.
- Pilot memory implements read/write; copy workload deferred.
- Network endpoints must be supplied by the operator; no public third-party servers are used.
- Database latency distribution is not available from this pilot parser; average latency only.
- This profile is not a full implementation of all proposed methodology tests.
- Resource-constrained environment: CPU workers and RAM reflect affinity/cgroup limits, not host capacity. Private resource-limits evidence retains both; do not merge container/VM or architecture cohorts.
- Short profile: does not establish 24-hour consistency.
- This report received AI-assisted evidence review under user-delegated authorization. This is not independent human verification or hardware attestation.
- This pilot measures its recorded test window. It does not establish 24-hour consistency, long-term reliability or provider-wide performance.
- Network tests use two controlled London endpoints, one stream, a 100 Mbit/s rate setting and a requested 64 MiB byte target per direction. Reverse-mode polling can exceed that byte target; actual sent and received bytes govern traffic accounting. These results do not measure maximum link capacity.
- SKU and region were matched to retained deployment records. A missing detected SKU uses the operator-supplied plan and remains labelled supplied. Control-plane records and checksums do not attest the physical host or establish physical-host independence.
- Package versions and available guard and journal evidence were reviewed. These records do not establish continuous absence of package activity throughout the test window.
- The pilot includes memory read/write and average PostgreSQL latency. Memory-copy tests and PostgreSQL latency percentiles are not implemented. Skipped consistency and missing measurements are not scores.
- This first-wave run began before background package controls were tightened. Mitigation and point-in-time package checks are retained, but a prelaunch idle guard and continuous package-activity coverage are unavailable. Effects from unobserved background package activity cannot be ruled out.
Environment and configuration
| Recorded field | Value |
|---|---|
| Provider | DigitalOcean · detected |
| Region | lon1 · detected |
| Plan | s-4vcpu-8gb · supplied |
| CPU | DO-Regular |
| Architecture | x86_64 |
| Kernel | 6.8.0-142-generic |
| Virtualization | kvm |
| Agent | 0.2.0 (45388107250ca6e26b216f15a9c17b8d405ec1b7+source.ff98e866b26b3ac76b512554) |
| Dependencies | sysbench: sysbench 1.0.20 · fio: fio-3.36 · iperf3: iperf 3.16 (cJSON 1.7.15) · postgresql: postgres (PostgreSQL) 16.15 (Ubuntu 16.15-0ubuntu0.24.04.1) · pgbench: pgbench (PostgreSQL) 16.15 (Ubuntu 16.15-0ubuntu0.24.04.1) · gzip: gzip 1.12 · apt:sysbench: 1.0.20+ds-6build2 · apt:fio: 3.36-1ubuntu0.1 · apt:iperf3: 3.16-1build2 · apt:postgresql-16: 16.15-0ubuntu0.24.04.1 · apt:postgresql-client-16: 16.15-0ubuntu0.24.04.1 · apt:gzip: 1.12-1ubuntu3.2 |
| Configuration hash | babf71ff6150558f5f5fbca258c3008c9ab5b36c4a679b4fa436b808258d96be |
| Started | 2026-10-17T11:41:48.520Z |
| Finished | 2026-10-17T12:12:44.438Z |
| Execution status | completed |
Every measured repetition and outcome
CPU performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| CPU 1 thread(s) · repetition 1 | passed | Events per second | 340.89 events/s |
| CPU 4 thread(s) · repetition 1 | passed | Events per second | 1,285.76 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 351.47 events/s |
| CPU 4 thread(s) · repetition 2 | passed | Events per second | 1,316.7 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 336.73 events/s |
| CPU 4 thread(s) · repetition 3 | passed | Events per second | 1,317.82 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 160.94 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 5,320.72 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 5,621.51 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 5,535.81 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 5,781 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 5,263.79 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 5,620.95 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 1,011.167 MB/s |
| Disk write · repetition 1 | passed | write operations | 964.324 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 31,064.064 us |
| Disk write · repetition 1 | passed | write p95 latency | 61,603.84 us |
| Disk write · repetition 1 | passed | write p99 latency | 80,216.064 us |
| Disk read · repetition 1 | passed | read bandwidth | 4,190.739 MB/s |
| Disk read · repetition 1 | passed | read operations | 3,996.6 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 6,455.296 us |
| Disk read · repetition 1 | passed | read p95 latency | 18,219.008 us |
| Disk read · repetition 1 | passed | read p99 latency | 25,034.752 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 226.871 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 55,388.42 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 505.856 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 880.64 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 1,957.888 us |
| Disk randread · repetition 1 | passed | read bandwidth | 322.132 MB/s |
| Disk randread · repetition 1 | passed | read operations | 78,645.445 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 366.592 us |
| Disk randread · repetition 1 | passed | read p95 latency | 651.264 us |
| Disk randread · repetition 1 | passed | read p99 latency | 1,318.912 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 191.375 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 46,722.409 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 460.8 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 864.256 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 1,482.752 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 82.098 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 20,043.499 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 354.304 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 626.688 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 995.328 us |
| Disk write · repetition 2 | passed | write bandwidth | 1,873.238 MB/s |
| Disk write · repetition 2 | passed | write operations | 1,786.459 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 16,449.536 us |
| Disk write · repetition 2 | passed | write p95 latency | 38,010.88 us |
| Disk write · repetition 2 | passed | write p99 latency | 51,642.368 us |
| Disk read · repetition 2 | passed | read bandwidth | 3,691.299 MB/s |
| Disk read · repetition 2 | passed | read operations | 3,520.297 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 7,503.872 us |
| Disk read · repetition 2 | passed | read p95 latency | 20,316.16 us |
| Disk read · repetition 2 | passed | read p99 latency | 27,131.904 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 234.397 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 57,225.785 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 493.568 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 847.872 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 1,712.128 us |
| Disk randread · repetition 2 | passed | read bandwidth | 310.79 MB/s |
| Disk randread · repetition 2 | passed | read operations | 75,876.542 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 382.976 us |
| Disk randread · repetition 2 | passed | read p95 latency | 675.84 us |
| Disk randread · repetition 2 | passed | read p99 latency | 1,351.68 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 189.946 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 46,373.621 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 468.992 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 831.488 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 1,466.368 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 81.488 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 19,894.437 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 362.496 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 634.88 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 987.136 us |
| Disk write · repetition 3 | passed | write bandwidth | 1,867.69 MB/s |
| Disk write · repetition 3 | passed | write operations | 1,781.168 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 17,170.432 us |
| Disk write · repetition 3 | passed | write p95 latency | 35,913.728 us |
| Disk write · repetition 3 | passed | write p99 latency | 48,496.64 us |
| Disk read · repetition 3 | passed | read bandwidth | 3,560.029 MB/s |
| Disk read · repetition 3 | passed | read operations | 3,395.109 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 7,569.408 us |
| Disk read · repetition 3 | passed | read p95 latency | 21,102.592 us |
| Disk read · repetition 3 | passed | read p99 latency | 31,850.496 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 232.744 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 56,822.173 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 493.568 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 856.064 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 1,826.816 us |
| Disk randread · repetition 3 | passed | read bandwidth | 309.827 MB/s |
| Disk randread · repetition 3 | passed | read operations | 75,641.479 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 382.976 us |
| Disk randread · repetition 3 | passed | read p95 latency | 651.264 us |
| Disk randread · repetition 3 | passed | read p99 latency | 1,335.296 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 194.93 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 47,590.38 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 448.512 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 765.952 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 1,417.216 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 83.577 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 20,404.62 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 354.304 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 626.688 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 1,155.072 us |
Network performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Network upload endpoint 1 · repetition 1 | passed | Sender throughput | 100.077 Mbit/s |
| Network upload endpoint 1 · repetition 1 | passed | Receiver throughput | 100.062 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.11 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 100.12 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 0.995 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.154 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 100.104 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.08 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 100.134 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 3.366 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 2,752.981 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 1.45 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 2,524.729 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 1.581 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 2,530.854 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 1.577 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 2,052.013 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 1.946 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 1,942.414 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 2.056 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 1,891.126 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 2.112 ms |
Consistency over time
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| 24-hour consistency · repetition 1 | skipped | No measured score | Not measured |
One deployment during its recorded test window. Raw intake logs remain private; the JSON download contains the reviewed, sanitized snapshot.