AI-assisted review
Instance benchmarkDigitalOcean
s-4vcpu-8gb
The complete benchmark report. Every workload, in one place.
4 vCPU7.8 GiB RAMsfo2x86_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.
342.54events/s
1 threads
1 threads
1,389.04events/s
4 threads
4 threads
- 1 threads342.54
- 4 threads1,389.04
Within-run medians; thread counts retain their recorded allocation.
Compression · 160.783 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read5,599.41 MiB/s
Write5,811.75 MiB/s
- Read5,599.41
- Write5,811.75
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 | 638.79 MB/s | Not measured | 609.198 IOPS | Not measured | 79,167.488 us |
| read | 3,429.832 MB/s | Not measured | 3,270.943 IOPS | Not measured | 13,041.664 us | Not measured |
| randwrite | Not measured | 155.711 MB/s | Not measured | 38,015.366 IOPS | Not measured | 1,368.064 us |
| randread | 250.161 MB/s | Not measured | 61,074.393 IOPS | Not measured | 798.72 us | Not measured |
| randrw | 128.085 MB/s | 54.934 MB/s | 31,270.749 IOPS | 13,411.573 IOPS | 1,286.144 us | 1,908.736 us |
Read, write and mixed workloads are recorded separately. These are medians of measured repetitions.
04 /
Network performance
Source: sfo2 · controlled London endpoints.
| Destination | Download (receiver) | Upload (receiver) | Round-trip mean |
|---|---|---|---|
| London endpoint 1 | 99.94 Mbit/s | 96.812 Mbit/s | 147.214 ms |
| London endpoint 2 | 99.946 Mbit/s | 97.443 Mbit/s | 137.278 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 | 1,723.868 transactions/s | 2.317 ms |
| storage | 1,511.826 transactions/s | 2.642 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
Window1370 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.
Environment and configuration
| Recorded field | Value |
|---|---|
| Provider | DigitalOcean · detected |
| Region | sfo2 · 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 | 0284a3ee81606f2645108bbbc2006365e41a08e2b26be310958420bf7ef221f7 |
| Started | 2026-10-17T12:05:48.224Z |
| Finished | 2026-10-17T12:28:37.803Z |
| 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 | 359.37 events/s |
| CPU 4 thread(s) · repetition 1 | passed | Events per second | 1,429.7 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 342.12 events/s |
| CPU 4 thread(s) · repetition 2 | passed | Events per second | 1,279.61 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 342.54 events/s |
| CPU 4 thread(s) · repetition 3 | passed | Events per second | 1,389.04 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 160.783 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 5,466 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 5,911.1 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 5,623.14 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 5,811.75 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 5,599.41 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 5,730.27 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 645.433 MB/s |
| Disk write · repetition 1 | passed | write operations | 615.533 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 45,875.2 us |
| Disk write · repetition 1 | passed | write p95 latency | 79,167.488 us |
| Disk write · repetition 1 | passed | write p99 latency | 221,249.536 us |
| Disk read · repetition 1 | passed | read bandwidth | 2,313.261 MB/s |
| Disk read · repetition 1 | passed | read operations | 2,206.098 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 10,289.152 us |
| Disk read · repetition 1 | passed | read p95 latency | 44,826.624 us |
| Disk read · repetition 1 | passed | read p99 latency | 67,633.152 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 146.099 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 35,668.744 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 659.456 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 1,368.064 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 4,227.072 us |
| Disk randread · repetition 1 | passed | read bandwidth | 250.161 MB/s |
| Disk randread · repetition 1 | passed | read operations | 61,074.393 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 468.992 us |
| Disk randread · repetition 1 | passed | read p95 latency | 798.72 us |
| Disk randread · repetition 1 | passed | read p99 latency | 1,581.056 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 127.413 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 31,106.696 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 561.152 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 1,400.832 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 3,686.4 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 54.647 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 13,341.489 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 518.144 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 1,908.736 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 3,620.864 us |
| Disk write · repetition 2 | passed | write bandwidth | 638.79 MB/s |
| Disk write · repetition 2 | passed | write operations | 609.198 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 44,826.624 us |
| Disk write · repetition 2 | passed | write p95 latency | 73,924.608 us |
| Disk write · repetition 2 | passed | write p99 latency | 325,058.56 us |
| Disk read · repetition 2 | passed | read bandwidth | 3,477.142 MB/s |
| Disk read · repetition 2 | passed | read operations | 3,316.061 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 9,240.576 us |
| Disk read · repetition 2 | passed | read p95 latency | 12,648.448 us |
| Disk read · repetition 2 | passed | read p99 latency | 16,908.288 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 200.773 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 49,016.966 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 536.576 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 1,019.904 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 2,179.072 us |
| Disk randread · repetition 2 | passed | read bandwidth | 268.475 MB/s |
| Disk randread · repetition 2 | passed | read operations | 65,545.748 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 428.032 us |
| Disk randread · repetition 2 | passed | read p95 latency | 733.184 us |
| Disk randread · repetition 2 | passed | read p99 latency | 1,679.36 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 140.659 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 34,340.499 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 485.376 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 1,138.688 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 3,522.56 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 60.297 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 14,720.861 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 452.608 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 1,990.656 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 3,457.024 us |
| Disk write · repetition 3 | passed | write bandwidth | 623.937 MB/s |
| Disk write · repetition 3 | passed | write operations | 595.033 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 46,399.488 us |
| Disk write · repetition 3 | passed | write p95 latency | 80,216.064 us |
| Disk write · repetition 3 | passed | write p99 latency | 308,281.344 us |
| Disk read · repetition 3 | passed | read bandwidth | 3,429.832 MB/s |
| Disk read · repetition 3 | passed | read operations | 3,270.943 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 9,240.576 us |
| Disk read · repetition 3 | passed | read p95 latency | 13,041.664 us |
| Disk read · repetition 3 | passed | read p99 latency | 18,743.296 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 155.711 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 38,015.366 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 667.648 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 1,400.832 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 3,719.168 us |
| Disk randread · repetition 3 | passed | read bandwidth | 233.012 MB/s |
| Disk randread · repetition 3 | passed | read operations | 56,887.741 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 485.376 us |
| Disk randread · repetition 3 | passed | read p95 latency | 880.64 us |
| Disk randread · repetition 3 | passed | read p99 latency | 2,408.448 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 128.085 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 31,270.749 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 561.152 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 1,286.144 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 3,588.096 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 54.934 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 13,411.573 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 509.952 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 1,794.048 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 3,457.024 us |
Network performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Network upload endpoint 1 · repetition 1 | passed | Sender throughput | 100.146 Mbit/s |
| Network upload endpoint 1 · repetition 1 | passed | Receiver throughput | 96.812 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.01 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 99.94 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 147.214 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.167 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 97.443 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.082 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 99.946 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 137.278 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 1,654.212 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 2.414 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 1,723.868 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 2.317 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 1,913.678 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 2.087 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 1,511.826 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 2.642 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 1,444.193 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 2.766 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 1,556.524 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 2.566 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.