AI-assisted review
Instance benchmarkVultr
voc-c-4c-8gb-75s-amd
The complete benchmark report. Every workload, in one place.
4 vCPU7.7 GiB RAMLHRx86_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.
1,647.42events/s
1 threads
1 threads
6,550.75events/s
4 threads
4 threads
- 1 threads1,647.42
- 4 threads6,550.75
Within-run medians; thread counts retain their recorded allocation.
Compression · 242.086 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read35,076.99 MiB/s
Write24,759.66 MiB/s
- Read35,076.99
- Write24,759.66
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 | 3,574.09 MB/s | Not measured | 3,408.518 IOPS | Not measured | 14,090.24 us |
| read | 6,774.909 MB/s | Not measured | 6,461.056 IOPS | Not measured | 8,093.696 us | Not measured |
| randwrite | Not measured | 384.105 MB/s | Not measured | 93,775.641 IOPS | Not measured | 481.28 us |
| randread | 462.276 MB/s | Not measured | 112,860.305 IOPS | Not measured | 370.688 us | Not measured |
| randrw | 301.958 MB/s | 129.486 MB/s | 73,720.309 IOPS | 31,612.68 IOPS | 415.744 us | 378.88 us |
Read, write and mixed workloads are recorded separately. These are medians of measured repetitions.
04 /
Network performance
Source: LHR · controlled London endpoints.
| Destination | Download (receiver) | Upload (receiver) | Round-trip mean |
|---|---|---|---|
| London endpoint 1 | 100.121 Mbit/s | 100.107 Mbit/s | 3.439 ms |
| London endpoint 2 | 100.121 Mbit/s | 100.149 Mbit/s | 0.348 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 | 4,773.755 transactions/s | 0.835 ms |
| storage | 3,742.307 transactions/s | 1.067 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
Window3353 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 | Vultr · detected |
| Region | LHR · detected |
| Plan | voc-c-4c-8gb-75s-amd · supplied |
| CPU | AMD EPYC-Milan Processor |
| Architecture | x86_64 |
| Kernel | 6.8.0-146-generic |
| Virtualization | microsoft |
| 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 | 8b66604f20ca195b8e22af7875db999d934adfee73f97e55d0cc7841e8c41d83 |
| Started | 2026-10-17T11:42:11.989Z |
| Finished | 2026-10-17T12:38:04.883Z |
| 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 | 1,650.46 events/s |
| CPU 4 thread(s) · repetition 1 | passed | Events per second | 6,550.75 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 1,644.37 events/s |
| CPU 4 thread(s) · repetition 2 | passed | Events per second | 6,560.65 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 1,647.42 events/s |
| CPU 4 thread(s) · repetition 3 | passed | Events per second | 6,541.12 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 242.086 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 35,014.11 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 24,415.97 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 35,076.99 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 24,759.66 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 35,522.18 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 24,926.5 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 3,411.698 MB/s |
| Disk write · repetition 1 | passed | write operations | 3,253.649 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 9,633.792 us |
| Disk write · repetition 1 | passed | write p95 latency | 18,219.008 us |
| Disk write · repetition 1 | passed | write p99 latency | 25,821.184 us |
| Disk read · repetition 1 | passed | read bandwidth | 7,015.985 MB/s |
| Disk read · repetition 1 | passed | read operations | 6,690.964 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 4,554.752 us |
| Disk read · repetition 1 | passed | read p95 latency | 7,700.48 us |
| Disk read · repetition 1 | passed | read p99 latency | 8,585.216 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 383.93 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 93,732.876 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 342.016 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 481.28 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 536.576 us |
| Disk randread · repetition 1 | passed | read bandwidth | 463.417 MB/s |
| Disk randread · repetition 1 | passed | read operations | 113,138.929 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 276.48 us |
| Disk randread · repetition 1 | passed | read p95 latency | 370.688 us |
| Disk randread · repetition 1 | passed | read p99 latency | 415.744 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 302.042 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 73,740.609 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 313.344 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 415.744 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 481.28 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 129.522 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 31,621.546 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 248.832 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 378.88 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 473.088 us |
| Disk write · repetition 2 | passed | write bandwidth | 3,574.09 MB/s |
| Disk write · repetition 2 | passed | write operations | 3,408.518 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 8,716.288 us |
| Disk write · repetition 2 | passed | write p95 latency | 14,090.24 us |
| Disk write · repetition 2 | passed | write p99 latency | 24,772.608 us |
| Disk read · repetition 2 | passed | read bandwidth | 4,994.874 MB/s |
| Disk read · repetition 2 | passed | read operations | 4,763.483 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 5,603.328 us |
| Disk read · repetition 2 | passed | read p95 latency | 17,170.432 us |
| Disk read · repetition 2 | passed | read p99 latency | 26,345.472 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 385.775 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 94,183.327 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 342.016 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 481.28 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 536.576 us |
| Disk randread · repetition 2 | passed | read bandwidth | 461.725 MB/s |
| Disk randread · repetition 2 | passed | read operations | 112,725.809 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 276.48 us |
| Disk randread · repetition 2 | passed | read p95 latency | 370.688 us |
| Disk randread · repetition 2 | passed | read p99 latency | 419.84 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 300.35 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 73,327.722 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 313.344 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 419.84 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 489.472 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 128.792 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 31,443.385 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 248.832 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 378.88 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 477.184 us |
| Disk write · repetition 3 | passed | write bandwidth | 3,580.305 MB/s |
| Disk write · repetition 3 | passed | write operations | 3,414.445 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 9,371.648 us |
| Disk write · repetition 3 | passed | write p95 latency | 13,565.952 us |
| Disk write · repetition 3 | passed | write p99 latency | 23,986.176 us |
| Disk read · repetition 3 | passed | read bandwidth | 6,774.909 MB/s |
| Disk read · repetition 3 | passed | read operations | 6,461.056 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 4,554.752 us |
| Disk read · repetition 3 | passed | read p95 latency | 8,093.696 us |
| Disk read · repetition 3 | passed | read p99 latency | 15,138.816 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 384.105 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 93,775.641 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 342.016 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 481.28 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 536.576 us |
| Disk randread · repetition 3 | passed | read bandwidth | 462.276 MB/s |
| Disk randread · repetition 3 | passed | read operations | 112,860.305 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 276.48 us |
| Disk randread · repetition 3 | passed | read p95 latency | 370.688 us |
| Disk randread · repetition 3 | passed | read p99 latency | 415.744 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 301.958 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 73,720.309 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 313.344 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 411.648 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 477.184 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 129.486 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 31,612.68 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 248.832 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 374.784 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 | 100.158 Mbit/s |
| Network upload endpoint 1 · repetition 1 | passed | Receiver throughput | 100.107 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.075 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 100.121 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 3.439 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.156 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 100.149 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.118 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 100.121 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 0.348 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 4,840.873 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 0.824 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 4,615.511 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 0.864 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 4,773.755 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 0.835 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 3,742.307 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 1.067 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 3,751.636 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 1.064 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 3,635.561 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 1.098 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.