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.
500.07events/s
1 threads
1 threads
1,548.44events/s
4 threads
4 threads
- 1 threads500.07
- 4 threads1,548.44
Within-run medians; thread counts retain their recorded allocation.
Compression · 241.183 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read10,516.3 MiB/s
Write9,474.2 MiB/s
- Read10,516.3
- Write9,474.2
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 | 1,681.467 MB/s | Not measured | 1,603.572 IOPS | Not measured | 35,389.44 us |
| read | 9,184.398 MB/s | Not measured | 8,758.924 IOPS | Not measured | 4,816.896 us | Not measured |
| randwrite | Not measured | 598.421 MB/s | Not measured | 146,098.763 IOPS | Not measured | 292.864 us |
| randread | 686.671 MB/s | Not measured | 167,644.269 IOPS | Not measured | 254.976 us | Not measured |
| randrw | 416.248 MB/s | 178.432 MB/s | 101,622.979 IOPS | 43,562.615 IOPS | 317.44 us | 259.072 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 | 97.571 Mbit/s | 129.376 ms |
| London endpoint 2 | 99.771 Mbit/s | 97.222 Mbit/s | 146.329 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 | 4,800.247 transactions/s | 0.831 ms |
| storage | 3,958.045 transactions/s | 1.009 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
Window1278 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 | 2026-10-17T12:38:11.099Z |
| Finished | 2026-10-17T12:59:29.310Z |
| 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 | 495.91 events/s |
| CPU 4 thread(s) · repetition 1 | passed | Events per second | 1,548.44 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 503.36 events/s |
| CPU 4 thread(s) · repetition 2 | passed | Events per second | 1,553.71 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 500.07 events/s |
| CPU 4 thread(s) · repetition 3 | passed | Events per second | 1,530.59 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 241.183 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 10,474.52 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 9,474.2 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 10,618.3 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 9,492.44 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 10,516.3 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 9,453.23 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 1,681.467 MB/s |
| Disk write · repetition 1 | passed | write operations | 1,603.572 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 17,956.864 us |
| Disk write · repetition 1 | passed | write p95 latency | 35,389.44 us |
| Disk write · repetition 1 | passed | write p99 latency | 46,923.776 us |
| Disk read · repetition 1 | passed | read bandwidth | 9,066.34 MB/s |
| Disk read · repetition 1 | passed | read operations | 8,646.335 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 3,489.792 us |
| Disk read · repetition 1 | passed | read p95 latency | 5,734.4 us |
| Disk read · repetition 1 | passed | read p99 latency | 8,454.144 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 598.421 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 146,098.763 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 220.16 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 292.864 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 333.824 us |
| Disk randread · repetition 1 | passed | read bandwidth | 688.319 MB/s |
| Disk randread · repetition 1 | passed | read operations | 168,046.598 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 183.296 us |
| Disk randread · repetition 1 | passed | read p95 latency | 254.976 us |
| Disk randread · repetition 1 | passed | read p99 latency | 305.152 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 420.022 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 102,544.482 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 224.256 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 317.44 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 403.456 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 180.052 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 43,957.901 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 181.248 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 259.072 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 407.552 us |
| Disk write · repetition 2 | passed | write bandwidth | 1,698.004 MB/s |
| Disk write · repetition 2 | passed | write operations | 1,619.343 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 17,694.72 us |
| Disk write · repetition 2 | passed | write p95 latency | 35,389.44 us |
| Disk write · repetition 2 | passed | write p99 latency | 44,302.336 us |
| Disk read · repetition 2 | passed | read bandwidth | 9,433.305 MB/s |
| Disk read · repetition 2 | passed | read operations | 8,996.3 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 3,424.256 us |
| Disk read · repetition 2 | passed | read p95 latency | 4,620.288 us |
| Disk read · repetition 2 | passed | read p99 latency | 7,634.944 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 595.904 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 145,484.284 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 220.16 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 292.864 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 342.016 us |
| Disk randread · repetition 2 | passed | read bandwidth | 676.715 MB/s |
| Disk randread · repetition 2 | passed | read operations | 165,213.593 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 185.344 us |
| Disk randread · repetition 2 | passed | read p95 latency | 264.192 us |
| Disk randread · repetition 2 | passed | read p99 latency | 325.632 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 416.248 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 101,622.979 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 226.304 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 317.44 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 399.36 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 178.432 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 43,562.615 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 183.296 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 257.024 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 432.128 us |
| Disk write · repetition 3 | passed | write bandwidth | 1,655.922 MB/s |
| Disk write · repetition 3 | passed | write operations | 1,579.21 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 17,694.72 us |
| Disk write · repetition 3 | passed | write p95 latency | 38,535.168 us |
| Disk write · repetition 3 | passed | write p99 latency | 54,788.096 us |
| Disk read · repetition 3 | passed | read bandwidth | 9,184.398 MB/s |
| Disk read · repetition 3 | passed | read operations | 8,758.924 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 3,457.024 us |
| Disk read · repetition 3 | passed | read p95 latency | 4,816.896 us |
| Disk read · repetition 3 | passed | read p99 latency | 10,420.224 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 602.929 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 147,199.427 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 218.112 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 292.864 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 333.824 us |
| Disk randread · repetition 3 | passed | read bandwidth | 686.671 MB/s |
| Disk randread · repetition 3 | passed | read operations | 167,644.269 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 183.296 us |
| Disk randread · repetition 3 | passed | read p95 latency | 254.976 us |
| Disk randread · repetition 3 | passed | read p99 latency | 305.152 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 413.637 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 100,985.5 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 226.304 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 321.536 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 403.456 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 177.308 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 43,288.057 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 185.344 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 268.288 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 448.512 us |
Network performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Network upload endpoint 1 · repetition 1 | passed | Sender throughput | 100.159 Mbit/s |
| Network upload endpoint 1 · repetition 1 | passed | Receiver throughput | 97.571 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.152 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 99.946 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 129.376 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.159 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 97.222 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.033 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 99.771 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 146.329 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 4,768.502 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 0.837 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 4,800.247 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 0.831 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 4,809.485 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 0.83 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 4,055.741 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 0.984 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 3,958.045 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 1.009 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 3,862.776 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 1.034 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.