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.
433.84events/s
1 threads
1 threads
1,353.91events/s
4 threads
4 threads
- 1 threads433.84
- 4 threads1,353.91
Within-run medians; thread counts retain their recorded allocation.
Compression · 207.026 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read7,333.17 MiB/s
Write7,639.22 MiB/s
- Read7,333.17
- Write7,639.22
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 | 1,659.94 MB/s | Not measured | 1,583.042 IOPS | Not measured | 34,865.152 us |
| read | 7,828.235 MB/s | Not measured | 7,465.587 IOPS | Not measured | 5,865.472 us | Not measured |
| randwrite | Not measured | 467.186 MB/s | Not measured | 114,059.065 IOPS | Not measured | 407.552 us |
| randread | 543.808 MB/s | Not measured | 132,765.541 IOPS | Not measured | 325.632 us | Not measured |
| randrw | 338.709 MB/s | 145.227 MB/s | 82,692.677 IOPS | 35,455.851 IOPS | 391.168 us | 350.208 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 | 99.946 Mbit/s | 97.647 Mbit/s | 129.193 ms |
| London endpoint 2 | 99.946 Mbit/s | 97.166 Mbit/s | 140.651 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 | 4,128.5 transactions/s | 0.967 ms |
| storage | 3,368.8 transactions/s | 1.185 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
Window1303 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 | 6343f908ae4f28eb98c261e9c277ed8d7bccaa18952b055d068e1da42f499ab9 |
| Started | 2026-10-17T12:38:54.159Z |
| Finished | 2026-10-17T13:00:37.652Z |
| 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 | 434.81 events/s |
| CPU 4 thread(s) · repetition 1 | passed | Events per second | 1,353.91 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 432.58 events/s |
| CPU 4 thread(s) · repetition 2 | passed | Events per second | 1,358.11 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 433.84 events/s |
| CPU 4 thread(s) · repetition 3 | passed | Events per second | 1,351.11 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 207.026 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 7,346.7 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 7,669.53 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 7,308.64 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 7,563.86 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 7,333.17 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 7,639.22 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 1,646.14 MB/s |
| Disk write · repetition 1 | passed | write operations | 1,569.881 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 18,481.152 us |
| Disk write · repetition 1 | passed | write p95 latency | 34,865.152 us |
| Disk write · repetition 1 | passed | write p99 latency | 45,350.912 us |
| Disk read · repetition 1 | passed | read bandwidth | 7,134.077 MB/s |
| Disk read · repetition 1 | passed | read operations | 6,803.586 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 4,358.144 us |
| Disk read · repetition 1 | passed | read p95 latency | 7,372.8 us |
| Disk read · repetition 1 | passed | read p99 latency | 11,730.944 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 469.101 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 114,526.716 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 276.48 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 403.456 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 489.472 us |
| Disk randread · repetition 1 | passed | read bandwidth | 543.808 MB/s |
| Disk randread · repetition 1 | passed | read operations | 132,765.541 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 230.4 us |
| Disk randread · repetition 1 | passed | read p95 latency | 325.632 us |
| Disk randread · repetition 1 | passed | read p99 latency | 395.264 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 338.619 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 82,670.678 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 276.48 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 391.168 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 481.28 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 145.19 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 35,446.885 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 224.256 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 350.208 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 501.76 us |
| Disk write · repetition 2 | passed | write bandwidth | 1,659.94 MB/s |
| Disk write · repetition 2 | passed | write operations | 1,583.042 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 18,219.008 us |
| Disk write · repetition 2 | passed | write p95 latency | 35,389.44 us |
| Disk write · repetition 2 | passed | write p99 latency | 45,875.2 us |
| Disk read · repetition 2 | passed | read bandwidth | 7,828.235 MB/s |
| Disk read · repetition 2 | passed | read operations | 7,465.587 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 4,112.384 us |
| Disk read · repetition 2 | passed | read p95 latency | 5,865.472 us |
| Disk read · repetition 2 | passed | read p99 latency | 8,847.36 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 467.186 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 114,059.065 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 276.48 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 407.552 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 501.76 us |
| Disk randread · repetition 2 | passed | read bandwidth | 547.056 MB/s |
| Disk randread · repetition 2 | passed | read operations | 133,558.515 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 230.4 us |
| Disk randread · repetition 2 | passed | read p95 latency | 321.536 us |
| Disk randread · repetition 2 | passed | read p99 latency | 387.072 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 340.746 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 83,189.894 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 272.384 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 387.072 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 481.28 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 146.089 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 35,666.344 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 222.208 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 346.112 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 481.28 us |
| Disk write · repetition 3 | passed | write bandwidth | 1,668.31 MB/s |
| Disk write · repetition 3 | passed | write operations | 1,591.024 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 18,219.008 us |
| Disk write · repetition 3 | passed | write p95 latency | 34,340.864 us |
| Disk write · repetition 3 | passed | write p99 latency | 44,826.624 us |
| Disk read · repetition 3 | passed | read bandwidth | 8,120.898 MB/s |
| Disk read · repetition 3 | passed | read operations | 7,744.692 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 3,883.008 us |
| Disk read · repetition 3 | passed | read p95 latency | 5,668.864 us |
| Disk read · repetition 3 | passed | read p99 latency | 11,337.728 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 462.864 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 113,003.833 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 276.48 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 411.648 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 514.048 us |
| Disk randread · repetition 3 | passed | read bandwidth | 540.039 MB/s |
| Disk randread · repetition 3 | passed | read operations | 131,845.472 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 232.448 us |
| Disk randread · repetition 3 | passed | read p95 latency | 329.728 us |
| Disk randread · repetition 3 | passed | read p99 latency | 399.36 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 338.709 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 82,692.677 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 276.48 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 395.264 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 485.376 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 145.227 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 35,455.851 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 224.256 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 350.208 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 473.088 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 | 97.647 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.011 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 99.946 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 129.193 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.157 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 97.166 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.096 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 99.946 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 140.651 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 4,128.5 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 0.967 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 4,123.759 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 0.968 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 4,182.553 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 0.954 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 3,464.02 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 1.153 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 3,368.8 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 1.185 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 3,359.028 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 1.189 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.