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.
321.4events/s
1 threads
1 threads
1,273.14events/s
4 threads
4 threads
- 1 threads321.4
- 4 threads1,273.14
Within-run medians; thread counts retain their recorded allocation.
Compression · 143.978 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read5,234.39 MiB/s
Write5,597.66 MiB/s
- Read5,234.39
- Write5,597.66
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 | 1,922.18 MB/s | Not measured | 1,833.133 IOPS | Not measured | 40,108.032 us |
| read | 3,929.958 MB/s | Not measured | 3,747.9 IOPS | Not measured | 14,876.672 us | Not measured |
| randwrite | Not measured | 200.913 MB/s | Not measured | 49,050.965 IOPS | Not measured | 1,187.84 us |
| randread | 280.497 MB/s | Not measured | 68,480.717 IOPS | Not measured | 806.912 us | Not measured |
| randrw | 148.689 MB/s | 63.726 MB/s | 36,301.123 IOPS | 15,558.115 IOPS | 1,171.456 us | 1,204.224 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 | 99.944 Mbit/s | 97.52 Mbit/s | 131.81 ms |
| London endpoint 2 | 11.25 Mbit/s | 96.276 Mbit/s | 159.249 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 | 1,830.251 transactions/s | 2.181 ms |
| storage | 1,083.024 transactions/s | 3.687 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
Window1374 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 | 2026-10-17T12:10:52.044Z |
| Finished | 2026-10-17T12:33:46.084Z |
| 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 | 321.4 events/s |
| CPU 4 thread(s) · repetition 1 | passed | Events per second | 1,323.7 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 328.13 events/s |
| CPU 4 thread(s) · repetition 2 | passed | Events per second | 1,273.14 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 315.72 events/s |
| CPU 4 thread(s) · repetition 3 | passed | Events per second | 1,213.57 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 143.978 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 5,383.34 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 5,703 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 5,234.39 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 5,558.67 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 5,219.82 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 5,597.66 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 1,218.008 MB/s |
| Disk write · repetition 1 | passed | write operations | 1,161.583 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 21,626.88 us |
| Disk write · repetition 1 | passed | write p95 latency | 66,322.432 us |
| Disk write · repetition 1 | passed | write p99 latency | 103,284.736 us |
| Disk read · repetition 1 | passed | read bandwidth | 5,389.172 MB/s |
| Disk read · repetition 1 | passed | read operations | 5,139.515 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 5,865.472 us |
| Disk read · repetition 1 | passed | read p95 latency | 9,371.648 us |
| Disk read · repetition 1 | passed | read p99 latency | 14,614.528 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 200.913 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 49,050.965 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 561.152 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 1,187.84 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 2,146.304 us |
| Disk randread · repetition 1 | passed | read bandwidth | 270.2 MB/s |
| Disk randread · repetition 1 | passed | read operations | 65,966.868 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 407.552 us |
| Disk randread · repetition 1 | passed | read p95 latency | 897.024 us |
| Disk randread · repetition 1 | passed | read p99 latency | 1,613.824 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 148.689 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 36,301.123 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 528.384 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 1,171.456 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 2,146.304 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 63.726 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 15,558.115 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 477.184 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 1,204.224 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 2,310.144 us |
| Disk write · repetition 2 | passed | write bandwidth | 1,922.18 MB/s |
| Disk write · repetition 2 | passed | write operations | 1,833.133 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 13,959.168 us |
| Disk write · repetition 2 | passed | write p95 latency | 40,108.032 us |
| Disk write · repetition 2 | passed | write p99 latency | 60,030.976 us |
| Disk read · repetition 2 | passed | read bandwidth | 3,929.958 MB/s |
| Disk read · repetition 2 | passed | read operations | 3,747.9 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 7,962.624 us |
| Disk read · repetition 2 | passed | read p95 latency | 14,876.672 us |
| Disk read · repetition 2 | passed | read p99 latency | 22,937.6 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 230.538 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 56,283.591 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 518.144 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 913.408 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 1,417.216 us |
| Disk randread · repetition 2 | passed | read bandwidth | 282.279 MB/s |
| Disk randread · repetition 2 | passed | read operations | 68,915.736 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 403.456 us |
| Disk randread · repetition 2 | passed | read p95 latency | 782.336 us |
| Disk randread · repetition 2 | passed | read p99 latency | 1,417.216 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 151.025 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 36,871.304 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 528.384 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 1,056.768 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 1,744.896 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 64.749 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 15,807.94 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 473.088 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 1,105.92 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 1,826.816 us |
| Disk write · repetition 3 | passed | write bandwidth | 2,309.565 MB/s |
| Disk write · repetition 3 | passed | write operations | 2,202.573 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 11,599.872 us |
| Disk write · repetition 3 | passed | write p95 latency | 30,539.776 us |
| Disk write · repetition 3 | passed | write p99 latency | 49,545.216 us |
| Disk read · repetition 3 | passed | read bandwidth | 3,797.274 MB/s |
| Disk read · repetition 3 | passed | read operations | 3,621.363 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 8,159.232 us |
| Disk read · repetition 3 | passed | read p95 latency | 15,269.888 us |
| Disk read · repetition 3 | passed | read p99 latency | 22,937.6 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 194.477 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 47,479.717 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 569.344 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 1,302.528 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 2,277.376 us |
| Disk randread · repetition 3 | passed | read bandwidth | 280.497 MB/s |
| Disk randread · repetition 3 | passed | read operations | 68,480.717 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 411.648 us |
| Disk randread · repetition 3 | passed | read p95 latency | 806.912 us |
| Disk randread · repetition 3 | passed | read p99 latency | 1,400.832 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 136.308 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 33,278.224 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 577.536 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 1,318.912 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 2,146.304 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 58.428 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 14,264.691 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 544.768 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 1,302.528 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 2,244.608 us |
Network performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Network upload endpoint 1 · repetition 1 | passed | Sender throughput | 100.152 Mbit/s |
| Network upload endpoint 1 · repetition 1 | passed | Receiver throughput | 97.52 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.108 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 99.944 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 131.81 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.155 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 96.276 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 13.248 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 11.25 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 159.249 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 1,830.251 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 2.181 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 1,775.533 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 2.248 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 1,980.421 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 2.015 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 1,152.819 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 3.463 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 987.351 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 4.044 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 1,083.024 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 3.687 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.