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.
1,666.57events/s
1 threads
1 threads
6,642.71events/s
4 threads
4 threads
- 1 threads1,666.57
- 4 threads6,642.71
Within-run medians; thread counts retain their recorded allocation.
Compression · 241.844 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read34,010.84 MiB/s
Write24,906.87 MiB/s
- Read34,010.84
- Write24,906.87
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 | 2,997.519 MB/s | Not measured | 2,858.657 IOPS | Not measured | 21,889.024 us |
| read | 6,822.908 MB/s | Not measured | 6,506.832 IOPS | Not measured | 7,766.016 us | Not measured |
| randwrite | Not measured | 395.235 MB/s | Not measured | 96,492.817 IOPS | Not measured | 460.8 us |
| randread | 471.989 MB/s | Not measured | 115,231.792 IOPS | Not measured | 362.496 us | Not measured |
| randrw | 308.538 MB/s | 132.325 MB/s | 75,326.689 IOPS | 32,305.89 IOPS | 399.36 us | 354.304 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 | 100.12 Mbit/s | 100.114 Mbit/s | 3.603 ms |
| London endpoint 2 | 100.12 Mbit/s | 100.15 Mbit/s | 0.389 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 | 4,473.085 transactions/s | 0.892 ms |
| storage | 3,677.759 transactions/s | 1.086 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
Window3311 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 | 2026-10-17T11:42:11.028Z |
| Finished | 2026-10-17T12:37:21.550Z |
| 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 | 1,666.57 events/s |
| CPU 4 thread(s) · repetition 1 | passed | Events per second | 6,639.37 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 1,666.15 events/s |
| CPU 4 thread(s) · repetition 2 | passed | Events per second | 6,642.71 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 1,668.19 events/s |
| CPU 4 thread(s) · repetition 3 | passed | Events per second | 6,647.52 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 241.844 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 34,655.35 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 24,821.73 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 33,479.93 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 24,993.6 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 34,010.84 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 24,906.87 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 2,982.21 MB/s |
| Disk write · repetition 1 | passed | write operations | 2,844.057 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 9,764.864 us |
| Disk write · repetition 1 | passed | write p95 latency | 17,694.72 us |
| Disk write · repetition 1 | passed | write p99 latency | 27,656.192 us |
| Disk read · repetition 1 | passed | read bandwidth | 6,469.067 MB/s |
| Disk read · repetition 1 | passed | read operations | 6,169.383 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 4,554.752 us |
| Disk read · repetition 1 | passed | read p95 latency | 8,454.144 us |
| Disk read · repetition 1 | passed | read p99 latency | 20,316.16 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 395.017 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 96,439.819 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 333.824 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 464.896 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 509.952 us |
| Disk randread · repetition 1 | passed | read bandwidth | 469.044 MB/s |
| Disk randread · repetition 1 | passed | read operations | 114,512.583 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 272.384 us |
| Disk randread · repetition 1 | passed | read p95 latency | 362.496 us |
| Disk randread · repetition 1 | passed | read p99 latency | 399.36 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 310.366 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 75,772.908 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 309.248 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 391.168 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 444.416 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 133.1 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 32,495.083 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 242.688 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 354.304 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 436.224 us |
| Disk write · repetition 2 | passed | write bandwidth | 2,997.519 MB/s |
| Disk write · repetition 2 | passed | write operations | 2,858.657 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 10,158.08 us |
| Disk write · repetition 2 | passed | write p95 latency | 21,889.024 us |
| Disk write · repetition 2 | passed | write p99 latency | 30,539.776 us |
| Disk read · repetition 2 | passed | read bandwidth | 6,822.908 MB/s |
| Disk read · repetition 2 | passed | read operations | 6,506.832 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 4,554.752 us |
| Disk read · repetition 2 | passed | read p95 latency | 7,766.016 us |
| Disk read · repetition 2 | passed | read p99 latency | 9,895.936 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 395.235 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 96,492.817 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 333.824 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 460.8 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 505.856 us |
| Disk randread · repetition 2 | passed | read bandwidth | 476.86 MB/s |
| Disk randread · repetition 2 | passed | read operations | 116,420.953 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 268.288 us |
| Disk randread · repetition 2 | passed | read p95 latency | 358.4 us |
| Disk randread · repetition 2 | passed | read p99 latency | 395.264 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 308.538 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 75,326.689 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 309.248 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 399.36 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 468.992 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 132.325 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 32,305.89 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 242.688 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 354.304 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 440.32 us |
| Disk write · repetition 3 | passed | write bandwidth | 3,109.628 MB/s |
| Disk write · repetition 3 | passed | write operations | 2,965.572 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 9,371.648 us |
| Disk write · repetition 3 | passed | write p95 latency | 22,151.168 us |
| Disk write · repetition 3 | passed | write p99 latency | 35,389.44 us |
| Disk read · repetition 3 | passed | read bandwidth | 6,928.55 MB/s |
| Disk read · repetition 3 | passed | read operations | 6,607.58 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 4,685.824 us |
| Disk read · repetition 3 | passed | read p95 latency | 7,372.8 us |
| Disk read · repetition 3 | passed | read p99 latency | 11,075.584 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 398.245 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 97,227.692 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 333.824 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 456.704 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 501.76 us |
| Disk randread · repetition 3 | passed | read bandwidth | 471.989 MB/s |
| Disk randread · repetition 3 | passed | read operations | 115,231.792 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 268.288 us |
| Disk randread · repetition 3 | passed | read p95 latency | 362.496 us |
| Disk randread · repetition 3 | passed | read p99 latency | 399.36 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 305.715 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 74,637.545 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 313.344 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 403.456 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 464.896 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 131.127 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 32,013.333 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 244.736 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 358.4 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 444.416 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 | 100.114 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.072 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 100.12 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 3.603 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.156 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 100.15 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.117 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 100.12 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 0.389 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 4,323.943 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 0.923 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 4,672.716 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 0.854 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 4,473.085 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 0.892 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 3,677.759 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 1.086 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 3,590.846 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 1.112 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 3,729.979 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 1.07 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.