AI-assisted review
Instance benchmarkDigitalOcean
c-4
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.
458.27events/s
1 threads
1 threads
1,435.36events/s
4 threads
4 threads
- 1 threads458.27
- 4 threads1,435.36
Within-run medians; thread counts retain their recorded allocation.
Compression · 206.98 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read7,432.98 MiB/s
Write8,266.53 MiB/s
- Read7,432.98
- Write8,266.53
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 | 1,685.421 MB/s | Not measured | 1,607.343 IOPS | Not measured | 34,865.152 us |
| read | 8,794.821 MB/s | Not measured | 8,387.395 IOPS | Not measured | 5,144.576 us | Not measured |
| randwrite | Not measured | 445.682 MB/s | Not measured | 108,808.973 IOPS | Not measured | 468.992 us |
| randread | 534.099 MB/s | Not measured | 130,395.353 IOPS | Not measured | 354.304 us | Not measured |
| randrw | 321.343 MB/s | 137.797 MB/s | 78,452.785 IOPS | 33,641.812 IOPS | 460.8 us | 399.36 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 | 100.121 Mbit/s | 100.148 Mbit/s | 0.634 ms |
| London endpoint 2 | 100.121 Mbit/s | 100.106 Mbit/s | 2.401 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 | 4,223.814 transactions/s | 0.945 ms |
| storage | 3,518.196 transactions/s | 1.135 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
Window1257 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 | lon1 · detected |
| Plan | c-4 · supplied |
| CPU | Intel(R) Xeon(R) Platinum 8280 CPU @ 2.70GHz |
| 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 | c3eb2e7c01f15159032aac93c308aed89ee9645289179752f5a4b9d183a6e775 |
| Started | 2026-10-17T12:33:46.584Z |
| Finished | 2026-10-17T12:54:43.112Z |
| 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 | 457.49 events/s |
| CPU 4 thread(s) · repetition 1 | passed | Events per second | 1,435.36 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 463.66 events/s |
| CPU 4 thread(s) · repetition 2 | passed | Events per second | 1,447.31 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 458.27 events/s |
| CPU 4 thread(s) · repetition 3 | passed | Events per second | 1,419.56 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 206.98 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 7,400.22 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 8,266.53 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 7,492.85 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 8,311.38 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 7,432.98 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 8,210.62 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 1,736.063 MB/s |
| Disk write · repetition 1 | passed | write operations | 1,655.639 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 17,432.576 us |
| Disk write · repetition 1 | passed | write p95 latency | 33,161.216 us |
| Disk write · repetition 1 | passed | write p99 latency | 44,302.336 us |
| Disk read · repetition 1 | passed | read bandwidth | 8,794.821 MB/s |
| Disk read · repetition 1 | passed | read operations | 8,387.395 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 3,653.632 us |
| Disk read · repetition 1 | passed | read p95 latency | 5,144.576 us |
| Disk read · repetition 1 | passed | read p99 latency | 8,978.432 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 449.441 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 109,726.709 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 272.384 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 460.8 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 593.92 us |
| Disk randread · repetition 1 | passed | read bandwidth | 556.067 MB/s |
| Disk randread · repetition 1 | passed | read operations | 135,758.508 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 222.208 us |
| Disk randread · repetition 1 | passed | read p95 latency | 333.824 us |
| Disk randread · repetition 1 | passed | read p99 latency | 407.552 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 327.916 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 80,057.531 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 272.384 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 448.512 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 544.768 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 140.606 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 34,327.656 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 226.304 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 382.976 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 514.048 us |
| Disk write · repetition 2 | passed | write bandwidth | 1,685.421 MB/s |
| Disk write · repetition 2 | passed | write operations | 1,607.343 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 17,694.72 us |
| Disk write · repetition 2 | passed | write p95 latency | 34,865.152 us |
| Disk write · repetition 2 | passed | write p99 latency | 50,593.792 us |
| Disk read · repetition 2 | passed | read bandwidth | 8,938.408 MB/s |
| Disk read · repetition 2 | passed | read operations | 8,524.33 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 3,588.096 us |
| Disk read · repetition 2 | passed | read p95 latency | 5,079.04 us |
| Disk read · repetition 2 | passed | read p99 latency | 8,454.144 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 445.682 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 108,808.973 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 276.48 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 468.992 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 602.112 us |
| Disk randread · repetition 2 | passed | read bandwidth | 519.064 MB/s |
| Disk randread · repetition 2 | passed | read operations | 126,724.543 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 232.448 us |
| Disk randread · repetition 2 | passed | read p95 latency | 370.688 us |
| Disk randread · repetition 2 | passed | read p99 latency | 444.416 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 315.044 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 76,915.103 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 284.672 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 473.088 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 569.344 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 135.075 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 32,977.267 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 234.496 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 403.456 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 544.768 us |
| Disk write · repetition 3 | passed | write bandwidth | 1,673.055 MB/s |
| Disk write · repetition 3 | passed | write operations | 1,595.55 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 17,694.72 us |
| Disk write · repetition 3 | passed | write p95 latency | 35,389.44 us |
| Disk write · repetition 3 | passed | write p99 latency | 45,350.912 us |
| Disk read · repetition 3 | passed | read bandwidth | 8,749.771 MB/s |
| Disk read · repetition 3 | passed | read operations | 8,344.432 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 3,686.4 us |
| Disk read · repetition 3 | passed | read p95 latency | 5,144.576 us |
| Disk read · repetition 3 | passed | read p99 latency | 7,438.336 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 441.164 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 107,706.11 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 276.48 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 473.088 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 602.112 us |
| Disk randread · repetition 3 | passed | read bandwidth | 534.099 MB/s |
| Disk randread · repetition 3 | passed | read operations | 130,395.353 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 230.4 us |
| Disk randread · repetition 3 | passed | read p95 latency | 354.304 us |
| Disk randread · repetition 3 | passed | read p99 latency | 432.128 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 321.343 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 78,452.785 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 280.576 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 460.8 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 569.344 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 137.797 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 33,641.812 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 230.4 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 399.36 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 552.96 us |
Network performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Network upload endpoint 1 · repetition 1 | passed | Sender throughput | 100.157 Mbit/s |
| Network upload endpoint 1 · repetition 1 | passed | Receiver throughput | 100.148 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.115 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 100.121 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 0.634 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.156 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 100.106 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.073 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 100.121 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 2.401 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 4,221.942 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 0.945 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 4,223.814 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 0.945 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 4,238.409 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 0.942 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 3,544.772 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 1.126 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 3,518.196 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 1.135 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 3,433.738 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 1.163 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.