AI-assisted review
Instance benchmarkVultr
voc-c-4c-8gb-75s-amd
The complete benchmark report. Every workload, in one place.
4 vCPU7.7 GiB RAMBLRx86_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.
1,345.36events/s
1 threads
1 threads
5,348.02events/s
4 threads
4 threads
- 1 threads1,345.36
- 4 threads5,348.02
Within-run medians; thread counts retain their recorded allocation.
Compression · 181.469 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read14,875.55 MiB/s
Write14,825.36 MiB/s
- Read14,875.55
- Write14,825.36
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 | 2,413.395 MB/s | Not measured | 2,301.593 IOPS | Not measured | 40,632.32 us |
| read | 5,022.149 MB/s | Not measured | 4,789.495 IOPS | Not measured | 19,267.584 us | Not measured |
| randwrite | Not measured | 350.015 MB/s | Not measured | 85,452.918 IOPS | Not measured | 514.048 us |
| randread | 402.271 MB/s | Not measured | 98,210.693 IOPS | Not measured | 436.224 us | Not measured |
| randrw | 257.042 MB/s | 110.183 MB/s | 62,754.508 IOPS | 26,900.103 IOPS | 505.856 us | 528.384 us |
Read, write and mixed workloads are recorded separately. These are medians of measured repetitions.
04 /
Network performance
Source: BLR · controlled London endpoints.
| Destination | Download (receiver) | Upload (receiver) | Round-trip mean |
|---|---|---|---|
| London endpoint 1 | 99.945 Mbit/s | 97.381 Mbit/s | 138.268 ms |
| London endpoint 2 | 99.946 Mbit/s | 95.457 Mbit/s | 245.937 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 | 2,521.093 transactions/s | 1.583 ms |
| storage | 2,002.759 transactions/s | 1.995 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
Window3891 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 | BLR · detected |
| Plan | voc-c-4c-8gb-75s-amd · supplied |
| CPU | AMD EPYC-Rome 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 | 02cc433ad56706c6dabc7d4e5574432106311860841b52d5650a23f28c636338 |
| Started | 2026-10-17T11:42:55.627Z |
| Finished | 2026-10-17T12:47:46.384Z |
| 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 | 1,345.36 events/s |
| CPU 4 thread(s) · repetition 1 | passed | Events per second | 5,311.74 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 1,344.69 events/s |
| CPU 4 thread(s) · repetition 2 | passed | Events per second | 5,374.29 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 1,347.74 events/s |
| CPU 4 thread(s) · repetition 3 | passed | Events per second | 5,348.02 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 181.469 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 13,490.2 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 14,984.96 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 15,543.72 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 14,709.56 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 14,875.55 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 14,825.36 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 2,413.395 MB/s |
| Disk write · repetition 1 | passed | write operations | 2,301.593 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 9,895.936 us |
| Disk write · repetition 1 | passed | write p95 latency | 40,632.32 us |
| Disk write · repetition 1 | passed | write p99 latency | 72,876.032 us |
| Disk read · repetition 1 | passed | read bandwidth | 5,022.149 MB/s |
| Disk read · repetition 1 | passed | read operations | 4,789.495 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 5,079.04 us |
| Disk read · repetition 1 | passed | read p95 latency | 19,267.584 us |
| Disk read · repetition 1 | passed | read p99 latency | 34,865.152 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 360.61 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 88,039.632 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 337.92 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 501.76 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 626.688 us |
| Disk randread · repetition 1 | passed | read bandwidth | 371.09 MB/s |
| Disk randread · repetition 1 | passed | read operations | 90,598.047 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 337.92 us |
| Disk randread · repetition 1 | passed | read p95 latency | 481.28 us |
| Disk randread · repetition 1 | passed | read p99 latency | 577.536 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 254.672 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 62,175.794 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 329.728 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 528.384 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 864.256 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 109.192 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 26,658.245 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 317.44 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 561.152 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 839.68 us |
| Disk write · repetition 2 | passed | write bandwidth | 2,426.102 MB/s |
| Disk write · repetition 2 | passed | write operations | 2,313.711 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 9,502.72 us |
| Disk write · repetition 2 | passed | write p95 latency | 39,583.744 us |
| Disk write · repetition 2 | passed | write p99 latency | 76,021.76 us |
| Disk read · repetition 2 | passed | read bandwidth | 5,285.238 MB/s |
| Disk read · repetition 2 | passed | read operations | 5,040.396 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 5,079.04 us |
| Disk read · repetition 2 | passed | read p95 latency | 11,337.728 us |
| Disk read · repetition 2 | passed | read p99 latency | 34,340.864 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 350.015 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 85,452.918 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 350.208 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 514.048 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 651.264 us |
| Disk randread · repetition 2 | passed | read bandwidth | 404.893 MB/s |
| Disk randread · repetition 2 | passed | read operations | 98,850.938 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 309.248 us |
| Disk randread · repetition 2 | passed | read p95 latency | 432.128 us |
| Disk randread · repetition 2 | passed | read p99 latency | 518.144 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 257.042 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 62,754.508 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 329.728 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 505.856 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 823.296 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 110.183 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 26,900.103 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 317.44 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 528.384 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 815.104 us |
| Disk write · repetition 3 | passed | write bandwidth | 2,224.381 MB/s |
| Disk write · repetition 3 | passed | write operations | 2,121.335 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 9,240.576 us |
| Disk write · repetition 3 | passed | write p95 latency | 49,545.216 us |
| Disk write · repetition 3 | passed | write p99 latency | 78,118.912 us |
| Disk read · repetition 3 | passed | read bandwidth | 4,796.116 MB/s |
| Disk read · repetition 3 | passed | read operations | 4,573.933 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 5,210.112 us |
| Disk read · repetition 3 | passed | read p95 latency | 20,316.16 us |
| Disk read · repetition 3 | passed | read p99 latency | 38,010.88 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 348.644 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 85,118.196 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 350.208 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 514.048 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 643.072 us |
| Disk randread · repetition 3 | passed | read bandwidth | 402.271 MB/s |
| Disk randread · repetition 3 | passed | read operations | 98,210.693 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 309.248 us |
| Disk randread · repetition 3 | passed | read p95 latency | 436.224 us |
| Disk randread · repetition 3 | passed | read p99 latency | 509.952 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 260.142 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 63,511.183 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 329.728 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 505.856 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 831.488 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 111.512 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 27,224.626 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 309.248 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 501.76 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 708.608 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 | 97.381 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.013 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 99.945 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 138.268 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.156 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 95.457 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.056 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 99.946 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 245.937 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 2,784.586 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 1.434 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 2,475.715 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 1.612 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 2,521.093 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 1.583 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 1,977.382 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 2.02 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 2,002.759 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 1.995 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 2,072.541 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 1.927 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.