AI-assisted review
Instance benchmarkVultr
voc-c-4c-8gb-75s-amd
The complete benchmark report. Every workload, in one place.
4 vCPU7.7 GiB RAMSJCx86_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.
2,013.31events/s
1 threads
1 threads
8,009.31events/s
4 threads
4 threads
- 1 threads2,013.31
- 4 threads8,009.31
Within-run medians; thread counts retain their recorded allocation.
Compression · 290.968 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read37,671.38 MiB/s
Write29,681.82 MiB/s
- Read37,671.38
- Write29,681.82
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 | 4,173.583 MB/s | Not measured | 3,980.239 IOPS | Not measured | 10,420.224 us |
| read | 1,856.272 MB/s | Not measured | 1,770.279 IOPS | Not measured | 46,399.488 us | Not measured |
| randwrite | Not measured | 1,444.756 MB/s | Not measured | 352,723.743 IOPS | Not measured | 154.624 us |
| randread | 1,091.136 MB/s | Not measured | 266,390.687 IOPS | Not measured | 214.016 us | Not measured |
| randrw | 780.107 MB/s | 334.38 MB/s | 190,455.918 IOPS | 81,635.779 IOPS | 259.072 us | 114.176 us |
Read, write and mixed workloads are recorded separately. These are medians of measured repetitions.
04 /
Network performance
Source: SJC · controlled London endpoints.
| Destination | Download (receiver) | Upload (receiver) | Round-trip mean |
|---|---|---|---|
| London endpoint 1 | 99.946 Mbit/s | 97.564 Mbit/s | 131.804 ms |
| London endpoint 2 | 99.946 Mbit/s | 97.464 Mbit/s | 136.198 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 | 10,689.287 transactions/s | 0.373 ms |
| storage | 8,214.489 transactions/s | 0.486 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
Window3498 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 | SJC · detected |
| Plan | voc-c-4c-8gb-75s-amd · supplied |
| CPU | AMD EPYC-Turin 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 | 5e3d02236dfacc1f903efb3f73808c3d2d21dbadc2992ec63aa342187f5af6c3 |
| Started | 2026-10-17T11:42:16.728Z |
| Finished | 2026-10-17T12:40:34.743Z |
| 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 | 2,007.99 events/s |
| CPU 4 thread(s) · repetition 1 | passed | Events per second | 8,016.42 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 2,016.32 events/s |
| CPU 4 thread(s) · repetition 2 | passed | Events per second | 8,009.31 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 2,013.31 events/s |
| CPU 4 thread(s) · repetition 3 | passed | Events per second | 8,002.02 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 290.968 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 38,269.53 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 29,681.82 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 37,621.59 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 30,392.52 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 37,671.38 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 29,553.47 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 4,179.279 MB/s |
| Disk write · repetition 1 | passed | write operations | 3,985.671 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 7,700.48 us |
| Disk write · repetition 1 | passed | write p95 latency | 10,289.152 us |
| Disk write · repetition 1 | passed | write p99 latency | 12,517.376 us |
| Disk read · repetition 1 | passed | read bandwidth | 1,856.272 MB/s |
| Disk read · repetition 1 | passed | read operations | 1,770.279 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 15,138.816 us |
| Disk read · repetition 1 | passed | read p95 latency | 46,399.488 us |
| Disk read · repetition 1 | passed | read p99 latency | 53,739.52 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 1,476.08 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 360,371.088 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 79.36 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 154.624 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 193.536 us |
| Disk randread · repetition 1 | passed | read bandwidth | 1,091.136 MB/s |
| Disk randread · repetition 1 | passed | read operations | 266,390.687 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 105.984 us |
| Disk randread · repetition 1 | passed | read p95 latency | 214.016 us |
| Disk randread · repetition 1 | passed | read p99 latency | 301.056 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 780.107 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 190,455.918 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 111.104 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 288.768 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 536.576 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 334.38 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 81,635.779 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 63.744 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 103.936 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 146.432 us |
| Disk write · repetition 2 | passed | write bandwidth | 4,173.583 MB/s |
| Disk write · repetition 2 | passed | write operations | 3,980.239 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 7,700.48 us |
| Disk write · repetition 2 | passed | write p95 latency | 10,420.224 us |
| Disk write · repetition 2 | passed | write p99 latency | 12,517.376 us |
| Disk read · repetition 2 | passed | read bandwidth | 10,721.561 MB/s |
| Disk read · repetition 2 | passed | read operations | 10,224.878 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 2,867.2 us |
| Disk read · repetition 2 | passed | read p95 latency | 6,782.976 us |
| Disk read · repetition 2 | passed | read p99 latency | 10,420.224 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 1,356.677 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 331,219.926 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 86.528 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 162.816 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 193.536 us |
| Disk randread · repetition 2 | passed | read bandwidth | 1,217.077 MB/s |
| Disk randread · repetition 2 | passed | read operations | 297,137.895 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 102.912 us |
| Disk randread · repetition 2 | passed | read p95 latency | 146.432 us |
| Disk randread · repetition 2 | passed | read p99 latency | 173.056 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 823.593 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 201,072.498 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 105.984 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 259.072 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 473.088 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 353.026 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 86,187.994 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 64.256 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 114.176 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 156.672 us |
| Disk write · repetition 3 | passed | write bandwidth | 4,166.315 MB/s |
| Disk write · repetition 3 | passed | write operations | 3,973.308 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 7,700.48 us |
| Disk write · repetition 3 | passed | write p95 latency | 10,420.224 us |
| Disk write · repetition 3 | passed | write p99 latency | 12,517.376 us |
| Disk read · repetition 3 | passed | read bandwidth | 1,392.897 MB/s |
| Disk read · repetition 3 | passed | read operations | 1,328.37 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 18,219.008 us |
| Disk read · repetition 3 | passed | read p95 latency | 56,360.96 us |
| Disk read · repetition 3 | passed | read p99 latency | 66,846.72 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 1,444.756 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 352,723.743 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 81.408 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 152.576 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 193.536 us |
| Disk randread · repetition 3 | passed | read bandwidth | 1,024.053 MB/s |
| Disk randread · repetition 3 | passed | read operations | 250,012.833 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 101.888 us |
| Disk randread · repetition 3 | passed | read p95 latency | 276.48 us |
| Disk randread · repetition 3 | passed | read p99 latency | 399.36 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 765.385 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 186,861.571 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 116.224 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 259.072 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 473.088 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 328.104 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 80,103.497 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 73.216 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 119.296 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 164.864 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 | 97.564 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.004 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 99.946 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 131.804 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.156 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 97.464 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.122 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 99.946 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 136.198 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 9,690.315 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 0.412 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 10,689.287 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 0.373 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 12,386.559 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 0.322 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 8,353.325 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 0.478 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 8,214.489 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 0.486 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 8,012.114 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 0.498 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.