AI-assisted review
Instance benchmarkDigitalOcean
s-4vcpu-8gb
The complete benchmark report. Every workload, in one place.
4 vCPU7.8 GiB RAMsfo2x86_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.
374.84events/s
1 threads
1 threads
1,465.3events/s
4 threads
4 threads
- 1 threads374.84
- 4 threads1,465.3
Within-run medians; thread counts retain their recorded allocation.
Compression · 160.624 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read5,998.86 MiB/s
Write6,128.84 MiB/s
- Read5,998.86
- Write6,128.84
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 | 1,188.507 MB/s | Not measured | 1,133.449 IOPS | Not measured | 60,555.264 us |
| read | 4,043.17 MB/s | Not measured | 3,855.867 IOPS | Not measured | 11,468.8 us | Not measured |
| randwrite | Not measured | 184.444 MB/s | Not measured | 45,030.166 IOPS | Not measured | 1,204.224 us |
| randread | 241.345 MB/s | Not measured | 58,922.172 IOPS | Not measured | 929.792 us | Not measured |
| randrw | 124.949 MB/s | 53.593 MB/s | 30,505.2 IOPS | 13,084.294 IOPS | 1,466.368 us | 1,482.752 us |
Read, write and mixed workloads are recorded separately. These are medians of measured repetitions.
04 /
Network performance
Source: sfo2 · controlled London endpoints.
| Destination | Download (receiver) | Upload (receiver) | Round-trip mean |
|---|---|---|---|
| London endpoint 1 | 99.959 Mbit/s | 97.433 Mbit/s | 142.216 ms |
| London endpoint 2 | 99.77 Mbit/s | 97.49 Mbit/s | 133.292 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 | 1,410.7 transactions/s | 2.831 ms |
| storage | 1,161.432 transactions/s | 3.439 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
Window1974 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.
- This first-wave run began before background package controls were tightened. Mitigation and point-in-time package checks are retained, but a prelaunch idle guard and continuous package-activity coverage are unavailable. Effects from unobserved background package activity cannot be ruled out.
Environment and configuration
| Recorded field | Value |
|---|---|
| Provider | DigitalOcean · detected |
| Region | sfo2 · 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 | 6343f908ae4f28eb98c261e9c277ed8d7bccaa18952b055d068e1da42f499ab9 |
| Started | 2026-10-17T11:42:15.587Z |
| Finished | 2026-10-17T12:15:09.692Z |
| 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 | 359.22 events/s |
| CPU 4 thread(s) · repetition 1 | passed | Events per second | 1,376.27 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 378.17 events/s |
| CPU 4 thread(s) · repetition 2 | passed | Events per second | 1,465.3 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 374.84 events/s |
| CPU 4 thread(s) · repetition 3 | passed | Events per second | 1,470.82 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 160.624 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 5,844.79 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 5,877.67 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 6,110.92 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 6,177.33 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 5,998.86 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 6,128.84 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 1,188.507 MB/s |
| Disk write · repetition 1 | passed | write operations | 1,133.449 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 24,248.32 us |
| Disk write · repetition 1 | passed | write p95 latency | 60,555.264 us |
| Disk write · repetition 1 | passed | write p99 latency | 78,118.912 us |
| Disk read · repetition 1 | passed | read bandwidth | 4,043.17 MB/s |
| Disk read · repetition 1 | passed | read operations | 3,855.867 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 7,962.624 us |
| Disk read · repetition 1 | passed | read p95 latency | 12,124.16 us |
| Disk read · repetition 1 | passed | read p99 latency | 17,170.432 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 167.057 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 40,785.474 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 692.224 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 1,400.832 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 2,244.608 us |
| Disk randread · repetition 1 | passed | read bandwidth | 238.806 MB/s |
| Disk randread · repetition 1 | passed | read operations | 58,302.29 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 481.28 us |
| Disk randread · repetition 1 | passed | read p95 latency | 1,028.096 us |
| Disk randread · repetition 1 | passed | read p99 latency | 1,433.6 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 147.586 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 36,031.666 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 544.768 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 1,138.688 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 1,728.512 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 63.265 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 15,445.585 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 528.384 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 1,122.304 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 1,761.28 us |
| Disk write · repetition 2 | passed | write bandwidth | 968.567 MB/s |
| Disk write · repetition 2 | passed | write operations | 923.697 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 31,850.496 us |
| Disk write · repetition 2 | passed | write p95 latency | 64,749.568 us |
| Disk write · repetition 2 | passed | write p99 latency | 81,264.64 us |
| Disk read · repetition 2 | passed | read bandwidth | 3,989.683 MB/s |
| Disk read · repetition 2 | passed | read operations | 3,804.859 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 8,159.232 us |
| Disk read · repetition 2 | passed | read p95 latency | 11,337.728 us |
| Disk read · repetition 2 | passed | read p99 latency | 16,056.32 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 186.972 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 45,647.345 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 618.496 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 1,187.84 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 1,744.896 us |
| Disk randread · repetition 2 | passed | read bandwidth | 246.607 MB/s |
| Disk randread · repetition 2 | passed | read operations | 60,206.826 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 473.088 us |
| Disk randread · repetition 2 | passed | read p95 latency | 929.792 us |
| Disk randread · repetition 2 | passed | read p99 latency | 1,400.832 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 121.82 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 29,741.209 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 634.88 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 1,515.52 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 2,113.536 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 52.243 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 12,754.708 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 610.304 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 1,548.288 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 2,244.608 us |
| Disk write · repetition 3 | passed | write bandwidth | 1,229.302 MB/s |
| Disk write · repetition 3 | passed | write operations | 1,172.354 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 26,083.328 us |
| Disk write · repetition 3 | passed | write p95 latency | 48,496.64 us |
| Disk write · repetition 3 | passed | write p99 latency | 62,128.128 us |
| Disk read · repetition 3 | passed | read bandwidth | 4,154.607 MB/s |
| Disk read · repetition 3 | passed | read operations | 3,962.142 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 8,093.696 us |
| Disk read · repetition 3 | passed | read p95 latency | 11,468.8 us |
| Disk read · repetition 3 | passed | read p99 latency | 14,876.672 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 184.444 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 45,030.166 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 634.88 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 1,204.224 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 1,761.28 us |
| Disk randread · repetition 3 | passed | read bandwidth | 241.345 MB/s |
| Disk randread · repetition 3 | passed | read operations | 58,922.172 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 497.664 us |
| Disk randread · repetition 3 | passed | read p95 latency | 856.064 us |
| Disk randread · repetition 3 | passed | read p99 latency | 1,335.296 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 124.949 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 30,505.2 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 634.88 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 1,466.368 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 2,088.96 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 53.593 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 13,084.294 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 610.304 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 1,482.752 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 2,179.072 us |
Network performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Network upload endpoint 1 · repetition 1 | passed | Sender throughput | 100.155 Mbit/s |
| Network upload endpoint 1 · repetition 1 | passed | Receiver throughput | 97.433 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.15 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 99.959 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 142.216 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.154 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 97.49 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 99.77 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 133.292 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 1,410.7 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 2.831 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 1,345.7 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 2.968 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 1,424.301 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 2.804 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 1,161.432 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 3.439 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 1,131.198 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 3.531 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 1,193.232 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 3.347 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.