AI-assisted review
Instance benchmarkDigitalOcean
s-4vcpu-8gb
The complete benchmark report. Every workload, in one place.
4 vCPU7.8 GiB RAMblr1x86_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.
361.48events/s
1 threads
1 threads
1,389.83events/s
4 threads
4 threads
- 1 threads361.48
- 4 threads1,389.83
Within-run medians; thread counts retain their recorded allocation.
Compression · 180.253 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read5,977.3 MiB/s
Write6,071.37 MiB/s
- Read5,977.3
- Write6,071.37
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 | 2,970.022 MB/s | Not measured | 2,832.434 IOPS | Not measured | 21,626.88 us |
| read | 6,052.467 MB/s | Not measured | 5,772.082 IOPS | Not measured | 8,454.144 us | Not measured |
| randwrite | Not measured | 258.368 MB/s | Not measured | 63,078.228 IOPS | Not measured | 823.296 us |
| randread | 355.327 MB/s | Not measured | 86,749.875 IOPS | Not measured | 528.384 us | Not measured |
| randrw | 197.671 MB/s | 84.755 MB/s | 48,259.491 IOPS | 20,692.144 IOPS | 765.952 us | 774.144 us |
Read, write and mixed workloads are recorded separately. These are medians of measured repetitions.
04 /
Network performance
Source: blr1 · controlled London endpoints.
| Destination | Download (receiver) | Upload (receiver) | Round-trip mean |
|---|---|---|---|
| London endpoint 1 | 99.943 Mbit/s | 97.56 Mbit/s | 134.465 ms |
| London endpoint 2 | 100.295 Mbit/s | 96.417 Mbit/s | 164.412 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 | 2,910.879 transactions/s | 1.371 ms |
| storage | 2,042.369 transactions/s | 1.955 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
Window1332 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 | blr1 · 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 | fdab7860cd17f914bfc9f5b1307a18c3f92830bb4a40a257dcbd43ed32af40c6 |
| Started | 2026-10-17T12:08:32.210Z |
| Finished | 2026-10-17T12:30:43.765Z |
| 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 | 361.48 events/s |
| CPU 4 thread(s) · repetition 1 | passed | Events per second | 1,389.83 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 384.73 events/s |
| CPU 4 thread(s) · repetition 2 | passed | Events per second | 1,409.48 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 349.09 events/s |
| CPU 4 thread(s) · repetition 3 | passed | Events per second | 1,318.57 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 180.253 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 5,977.3 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 6,071.37 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 6,163.62 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 6,074.35 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 5,756.13 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 5,893.28 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 2,934.245 MB/s |
| Disk write · repetition 1 | passed | write operations | 2,798.314 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 9,240.576 us |
| Disk write · repetition 1 | passed | write p95 latency | 22,413.312 us |
| Disk write · repetition 1 | passed | write p99 latency | 33,816.576 us |
| Disk read · repetition 1 | passed | read bandwidth | 6,835.629 MB/s |
| Disk read · repetition 1 | passed | read operations | 6,518.964 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 4,751.36 us |
| Disk read · repetition 1 | passed | read p95 latency | 6,979.584 us |
| Disk read · repetition 1 | passed | read p99 latency | 8,454.144 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 272.912 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 66,629.012 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 440.32 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 774.144 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 1,138.688 us |
| Disk randread · repetition 1 | passed | read bandwidth | 385.455 MB/s |
| Disk randread · repetition 1 | passed | read operations | 94,105.163 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 313.344 us |
| Disk randread · repetition 1 | passed | read p95 latency | 497.664 us |
| Disk randread · repetition 1 | passed | read p99 latency | 684.032 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 213.028 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 52,008.833 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 407.552 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 708.608 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 946.176 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 91.374 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 22,308.223 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 333.824 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 700.416 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 1,056.768 us |
| Disk write · repetition 2 | passed | write bandwidth | 2,970.022 MB/s |
| Disk write · repetition 2 | passed | write operations | 2,832.434 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 9,633.792 us |
| Disk write · repetition 2 | passed | write p95 latency | 21,626.88 us |
| Disk write · repetition 2 | passed | write p99 latency | 30,801.92 us |
| Disk read · repetition 2 | passed | read bandwidth | 6,052.467 MB/s |
| Disk read · repetition 2 | passed | read operations | 5,772.082 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 5,275.648 us |
| Disk read · repetition 2 | passed | read p95 latency | 8,454.144 us |
| Disk read · repetition 2 | passed | read p99 latency | 13,434.88 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 258.368 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 63,078.228 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 460.8 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 823.296 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 1,220.608 us |
| Disk randread · repetition 2 | passed | read bandwidth | 324.923 MB/s |
| Disk randread · repetition 2 | passed | read operations | 79,326.822 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 370.688 us |
| Disk randread · repetition 2 | passed | read p95 latency | 602.112 us |
| Disk randread · repetition 2 | passed | read p99 latency | 1,089.536 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 193.535 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 47,249.658 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 436.224 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 774.144 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 1,155.072 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 82.987 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 20,260.558 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 366.592 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 831.488 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 1,482.752 us |
| Disk write · repetition 3 | passed | write bandwidth | 3,450.358 MB/s |
| Disk write · repetition 3 | passed | write operations | 3,290.518 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 8,585.216 us |
| Disk write · repetition 3 | passed | write p95 latency | 16,908.288 us |
| Disk write · repetition 3 | passed | write p99 latency | 24,248.32 us |
| Disk read · repetition 3 | passed | read bandwidth | 4,333.021 MB/s |
| Disk read · repetition 3 | passed | read operations | 4,132.291 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 7,241.728 us |
| Disk read · repetition 3 | passed | read p95 latency | 12,910.592 us |
| Disk read · repetition 3 | passed | read p99 latency | 21,102.592 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 246.53 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 60,188.094 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 473.088 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 880.64 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 1,466.368 us |
| Disk randread · repetition 3 | passed | read bandwidth | 355.327 MB/s |
| Disk randread · repetition 3 | passed | read operations | 86,749.875 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 346.112 us |
| Disk randread · repetition 3 | passed | read p95 latency | 528.384 us |
| Disk randread · repetition 3 | passed | read p99 latency | 782.336 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 197.671 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 48,259.491 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 436.224 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 765.952 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 1,204.224 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 84.755 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 20,692.144 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 358.4 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 774.144 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 1,269.76 us |
Network performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Network upload endpoint 1 · repetition 1 | passed | Sender throughput | 100.156 Mbit/s |
| Network upload endpoint 1 · repetition 1 | passed | Receiver throughput | 97.56 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.111 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 99.943 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 134.465 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.155 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 96.417 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.039 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 100.295 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 164.412 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 2,760.998 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 1.446 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 2,910.879 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 1.371 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 2,990.86 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 1.334 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 2,511.009 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 1.59 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 2,042.369 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 1.955 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 2,016.482 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 1.98 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.