AI-assisted review
Instance benchmarkDigitalOcean
c-4
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.
497.49events/s
1 threads
1 threads
1,543.97events/s
4 threads
4 threads
- 1 threads497.49
- 4 threads1,543.97
Within-run medians; thread counts retain their recorded allocation.
Compression · 241.337 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read8,330.74 MiB/s
Write8,449.51 MiB/s
- Read8,330.74
- Write8,449.51
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 | 1,670.323 MB/s | Not measured | 1,592.944 IOPS | Not measured | 36,438.016 us |
| read | 9,489.048 MB/s | Not measured | 9,049.462 IOPS | Not measured | 5,341.184 us | Not measured |
| randwrite | Not measured | 554.828 MB/s | Not measured | 135,456.051 IOPS | Not measured | 329.728 us |
| randread | 621.777 MB/s | Not measured | 151,800.94 IOPS | Not measured | 280.576 us | Not measured |
| randrw | 384.016 MB/s | 164.56 MB/s | 93,753.842 IOPS | 40,175.794 IOPS | 350.208 us | 292.864 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 | 97.524 Mbit/s | 131.245 ms |
| London endpoint 2 | 99.947 Mbit/s | 97.123 Mbit/s | 147.121 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 | 4,778.683 transactions/s | 0.835 ms |
| storage | 3,910.374 transactions/s | 1.021 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
Window1281 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 | 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 | 0284a3ee81606f2645108bbbc2006365e41a08e2b26be310958420bf7ef221f7 |
| Started | 2026-10-17T12:39:46.000Z |
| Finished | 2026-10-17T13:01:06.732Z |
| 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 | 493.91 events/s |
| CPU 4 thread(s) · repetition 1 | passed | Events per second | 1,546.13 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 497.91 events/s |
| CPU 4 thread(s) · repetition 2 | passed | Events per second | 1,534.07 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 497.49 events/s |
| CPU 4 thread(s) · repetition 3 | passed | Events per second | 1,543.97 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 241.337 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 8,298.45 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 8,641.03 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 8,330.74 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 8,431.67 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 8,400.3 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 8,449.51 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 1,670.323 MB/s |
| Disk write · repetition 1 | passed | write operations | 1,592.944 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 17,170.432 us |
| Disk write · repetition 1 | passed | write p95 latency | 36,438.016 us |
| Disk write · repetition 1 | passed | write p99 latency | 50,069.504 us |
| Disk read · repetition 1 | passed | read bandwidth | 9,489.048 MB/s |
| Disk read · repetition 1 | passed | read operations | 9,049.462 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 3,358.72 us |
| Disk read · repetition 1 | passed | read p95 latency | 5,341.184 us |
| Disk read · repetition 1 | passed | read p99 latency | 7,700.48 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 553.268 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 135,075.131 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 232.448 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 329.728 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 391.168 us |
| Disk randread · repetition 1 | passed | read bandwidth | 621.721 MB/s |
| Disk randread · repetition 1 | passed | read operations | 151,787.307 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 203.776 us |
| Disk randread · repetition 1 | passed | read p95 latency | 280.576 us |
| Disk randread · repetition 1 | passed | read p99 latency | 333.824 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 384.016 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 93,753.842 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 242.688 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 346.112 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 436.224 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 164.56 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 40,175.794 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 197.632 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 292.864 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 378.88 us |
| Disk write · repetition 2 | passed | write bandwidth | 1,615.099 MB/s |
| Disk write · repetition 2 | passed | write operations | 1,540.279 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 17,694.72 us |
| Disk write · repetition 2 | passed | write p95 latency | 38,535.168 us |
| Disk write · repetition 2 | passed | write p99 latency | 57,933.824 us |
| Disk read · repetition 2 | passed | read bandwidth | 9,308.751 MB/s |
| Disk read · repetition 2 | passed | read operations | 8,877.516 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 3,457.024 us |
| Disk read · repetition 2 | passed | read p95 latency | 5,341.184 us |
| Disk read · repetition 2 | passed | read p99 latency | 6,914.048 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 556.84 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 135,947.268 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 232.448 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 329.728 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 378.88 us |
| Disk randread · repetition 2 | passed | read bandwidth | 621.777 MB/s |
| Disk randread · repetition 2 | passed | read operations | 151,800.94 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 203.776 us |
| Disk randread · repetition 2 | passed | read p95 latency | 280.576 us |
| Disk randread · repetition 2 | passed | read p99 latency | 329.728 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 383.977 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 93,744.442 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 242.688 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 350.208 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 440.32 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 164.543 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 40,171.694 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 197.632 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 292.864 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 382.976 us |
| Disk write · repetition 3 | passed | write bandwidth | 1,726.168 MB/s |
| Disk write · repetition 3 | passed | write operations | 1,646.203 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 17,432.576 us |
| Disk write · repetition 3 | passed | write p95 latency | 33,423.36 us |
| Disk write · repetition 3 | passed | write p99 latency | 45,350.912 us |
| Disk read · repetition 3 | passed | read bandwidth | 9,631.04 MB/s |
| Disk read · repetition 3 | passed | read operations | 9,184.875 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 3,325.952 us |
| Disk read · repetition 3 | passed | read p95 latency | 4,882.432 us |
| Disk read · repetition 3 | passed | read p99 latency | 8,159.232 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 554.828 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 135,456.051 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 232.448 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 329.728 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 374.784 us |
| Disk randread · repetition 3 | passed | read bandwidth | 625.239 MB/s |
| Disk randread · repetition 3 | passed | read operations | 152,646.212 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 201.728 us |
| Disk randread · repetition 3 | passed | read p95 latency | 280.576 us |
| Disk randread · repetition 3 | passed | read p99 latency | 329.728 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 384.841 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 93,955.301 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 242.688 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 354.304 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 444.416 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 164.909 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 40,260.925 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 195.584 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 292.864 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 382.976 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 | 97.524 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.031 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 99.943 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 131.245 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.158 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 97.123 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.146 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 99.947 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 147.121 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 4,755.415 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 0.839 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 4,778.683 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 0.835 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 4,793.25 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 0.833 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 3,996.72 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 0.999 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 3,910.374 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 1.021 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 3,825.216 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 1.044 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.