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.
378.09events/s
1 threads
1 threads
1,425.58events/s
4 threads
4 threads
- 1 threads378.09
- 4 threads1,425.58
Within-run medians; thread counts retain their recorded allocation.
Compression · 131.782 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read6,138.74 MiB/s
Write6,059.88 MiB/s
- Read6,138.74
- Write6,059.88
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 | 336.594 MB/s | Not measured | 321.001 IOPS | Not measured | 217,055.232 us |
| read | 2,140.129 MB/s | Not measured | 2,040.986 IOPS | Not measured | 22,937.6 us | Not measured |
| randwrite | Not measured | 130.127 MB/s | Not measured | 31,769.297 IOPS | Not measured | 2,506.752 us |
| randread | 192.315 MB/s | Not measured | 46,951.902 IOPS | Not measured | 1,499.136 us | Not measured |
| randrw | 97.578 MB/s | 41.846 MB/s | 23,822.673 IOPS | 10,216.193 IOPS | 3,260.416 us | 3,129.344 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 | 99.945 Mbit/s | 97.36 Mbit/s | 144.39 ms |
| London endpoint 2 | 100.119 Mbit/s | 97.548 Mbit/s | 136.969 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 | 1,162.826 transactions/s | 3.436 ms |
| storage | 931.268 transactions/s | 4.292 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
Window1958 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 | 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 | 723366ad42009a8dc0853cda9a7401ad3c716ceb5b9c321fe10f1ab8d02ac089 |
| Started | 2026-10-17T11:42:10.165Z |
| Finished | 2026-10-17T12:14:48.473Z |
| 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 | 382.61 events/s |
| CPU 4 thread(s) · repetition 1 | passed | Events per second | 1,413.97 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 378.09 events/s |
| CPU 4 thread(s) · repetition 2 | passed | Events per second | 1,485.64 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 376.84 events/s |
| CPU 4 thread(s) · repetition 3 | passed | Events per second | 1,425.58 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 131.782 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 6,138.74 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 6,059.88 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 6,217.34 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 6,091.2 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 6,030.08 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 5,928.28 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 326.412 MB/s |
| Disk write · repetition 1 | passed | write operations | 311.29 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 82,313.216 us |
| Disk write · repetition 1 | passed | write p95 latency | 229,638.144 us |
| Disk write · repetition 1 | passed | write p99 latency | 484,442.112 us |
| Disk read · repetition 1 | passed | read bandwidth | 2,115.172 MB/s |
| Disk read · repetition 1 | passed | read operations | 2,017.186 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 15,925.248 us |
| Disk read · repetition 1 | passed | read p95 latency | 24,772.608 us |
| Disk read · repetition 1 | passed | read p99 latency | 34,340.864 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 130.127 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 31,769.297 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 700.416 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 2,506.752 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 5,341.184 us |
| Disk randread · repetition 1 | passed | read bandwidth | 192.315 MB/s |
| Disk randread · repetition 1 | passed | read operations | 46,951.902 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 485.376 us |
| Disk randread · repetition 1 | passed | read p95 latency | 1,564.672 us |
| Disk randread · repetition 1 | passed | read p99 latency | 4,177.92 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 105.476 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 25,751.058 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 552.96 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 3,162.112 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 5,210.112 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 45.22 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 11,040.129 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 489.472 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 3,129.344 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 5,144.576 us |
| Disk write · repetition 2 | passed | write bandwidth | 336.594 MB/s |
| Disk write · repetition 2 | passed | write operations | 321.001 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 78,118.912 us |
| Disk write · repetition 2 | passed | write p95 latency | 217,055.232 us |
| Disk write · repetition 2 | passed | write p99 latency | 480,247.808 us |
| Disk read · repetition 2 | passed | read bandwidth | 2,242.224 MB/s |
| Disk read · repetition 2 | passed | read operations | 2,138.351 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 15,138.816 us |
| Disk read · repetition 2 | passed | read p95 latency | 22,937.6 us |
| Disk read · repetition 2 | passed | read p99 latency | 36,438.016 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 127.961 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 31,240.525 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 692.224 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 2,605.056 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 5,406.72 us |
| Disk randread · repetition 2 | passed | read bandwidth | 187.116 MB/s |
| Disk randread · repetition 2 | passed | read operations | 45,682.598 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 464.896 us |
| Disk randread · repetition 2 | passed | read p95 latency | 1,499.136 us |
| Disk randread · repetition 2 | passed | read p99 latency | 4,358.144 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 97.578 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 23,822.673 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 610.304 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 3,260.416 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 5,537.792 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 41.846 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 10,216.193 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 536.576 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 3,129.344 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 5,537.792 us |
| Disk write · repetition 3 | passed | write bandwidth | 385.106 MB/s |
| Disk write · repetition 3 | passed | write operations | 367.266 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 74,973.184 us |
| Disk write · repetition 3 | passed | write p95 latency | 189,792.256 us |
| Disk write · repetition 3 | passed | write p99 latency | 337,641.472 us |
| Disk read · repetition 3 | passed | read bandwidth | 2,140.129 MB/s |
| Disk read · repetition 3 | passed | read operations | 2,040.986 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 15,269.888 us |
| Disk read · repetition 3 | passed | read p95 latency | 22,937.6 us |
| Disk read · repetition 3 | passed | read p99 latency | 37,486.592 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 133.336 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 32,552.782 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 684.032 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 2,277.376 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 5,341.184 us |
| Disk randread · repetition 3 | passed | read bandwidth | 199.24 MB/s |
| Disk randread · repetition 3 | passed | read operations | 48,642.479 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 485.376 us |
| Disk randread · repetition 3 | passed | read p95 latency | 1,499.136 us |
| Disk randread · repetition 3 | passed | read p99 latency | 3,883.008 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 93.498 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 22,826.778 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 602.112 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 3,457.024 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 5,734.4 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 40.095 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 9,788.814 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 528.384 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 3,293.184 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 5,668.864 us |
Network performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Network upload endpoint 1 · repetition 1 | passed | Sender throughput | 100.155 Mbit/s |
| Network upload endpoint 1 · repetition 1 | passed | Receiver throughput | 97.36 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.009 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 99.945 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 144.39 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.154 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 97.548 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.065 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 100.119 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 136.969 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 1,045.086 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 3.825 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 1,190.454 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 3.357 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 1,162.826 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 3.436 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 978.156 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 4.086 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 912.414 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 4.38 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 931.268 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 4.292 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.