AI-assisted review
Instance benchmarkVultr
voc-c-2c-4gb-50s-amd
The complete benchmark report. Every workload, in one place.
2 vCPU3.8 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.
1,656.59events/s
1 threads
1 threads
3,286.31events/s
2 threads
2 threads
- 1 threads1,656.59
- 2 threads3,286.31
Within-run medians; thread counts retain their recorded allocation.
Compression · 242.216 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read36,017.33 MiB/s
Write25,030.44 MiB/s
- Read36,017.33
- Write25,030.44
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 | 2,141.185 MB/s | Not measured | 2,041.993 IOPS | Not measured | 24,772.608 us |
| read | 3,937.026 MB/s | Not measured | 3,754.641 IOPS | Not measured | 13,565.952 us | Not measured |
| randwrite | Not measured | 393.371 MB/s | Not measured | 96,037.899 IOPS | Not measured | 468.992 us |
| randread | 473.509 MB/s | Not measured | 115,602.88 IOPS | Not measured | 362.496 us | Not measured |
| randrw | 304.392 MB/s | 130.53 MB/s | 74,314.423 IOPS | 31,867.671 IOPS | 411.648 us | 391.168 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 | 97.574 Mbit/s | 131.272 ms |
| London endpoint 2 | 99.946 Mbit/s | 97.462 Mbit/s | 136.731 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 | 4,089.162 transactions/s | 0.976 ms |
| storage | 3,285.071 transactions/s | 1.216 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
Window3204 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-2c-4gb-50s-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 | 73098e9168a59c8bc3ca371424e5a0427f49551be23b20bd5f4de867fc514f0d |
| Started | 2026-10-17T11:42:08.600Z |
| Finished | 2026-10-17T12:35:33.003Z |
| 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 | 1,655.31 events/s |
| CPU 2 thread(s) · repetition 1 | passed | Events per second | 3,296.24 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 1,657.73 events/s |
| CPU 2 thread(s) · repetition 2 | passed | Events per second | 3,286.31 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 1,656.59 events/s |
| CPU 2 thread(s) · repetition 3 | passed | Events per second | 3,286.01 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 242.216 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 36,247.9 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 25,030.44 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 36,017.33 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 24,970.02 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 35,688.41 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 25,137.9 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 1,922.401 MB/s |
| Disk write · repetition 1 | passed | write operations | 1,833.344 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 15,794.176 us |
| Disk write · repetition 1 | passed | write p95 latency | 27,656.192 us |
| Disk write · repetition 1 | passed | write p99 latency | 72,876.032 us |
| Disk read · repetition 1 | passed | read bandwidth | 4,226.773 MB/s |
| Disk read · repetition 1 | passed | read operations | 4,030.965 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 7,569.408 us |
| Disk read · repetition 1 | passed | read p95 latency | 12,779.52 us |
| Disk read · repetition 1 | passed | read p99 latency | 15,532.032 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 387.214 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 94,534.649 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 333.824 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 477.184 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 536.576 us |
| Disk randread · repetition 1 | passed | read bandwidth | 471.652 MB/s |
| Disk randread · repetition 1 | passed | read operations | 115,149.428 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 268.288 us |
| Disk randread · repetition 1 | passed | read p95 latency | 362.496 us |
| Disk randread · repetition 1 | passed | read p99 latency | 407.552 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 304.392 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 74,314.423 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 296.96 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 411.648 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 700.416 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 130.53 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 31,867.671 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 259.072 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 391.168 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 468.992 us |
| Disk write · repetition 2 | passed | write bandwidth | 2,141.185 MB/s |
| Disk write · repetition 2 | passed | write operations | 2,041.993 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 13,697.024 us |
| Disk write · repetition 2 | passed | write p95 latency | 24,772.608 us |
| Disk write · repetition 2 | passed | write p99 latency | 76,021.76 us |
| Disk read · repetition 2 | passed | read bandwidth | 3,937.026 MB/s |
| Disk read · repetition 2 | passed | read operations | 3,754.641 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 8,159.232 us |
| Disk read · repetition 2 | passed | read p95 latency | 13,565.952 us |
| Disk read · repetition 2 | passed | read p99 latency | 16,580.608 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 394.803 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 96,387.487 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 317.44 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 464.896 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 528.384 us |
| Disk randread · repetition 2 | passed | read bandwidth | 473.509 MB/s |
| Disk randread · repetition 2 | passed | read operations | 115,602.88 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 268.288 us |
| Disk randread · repetition 2 | passed | read p95 latency | 362.496 us |
| Disk randread · repetition 2 | passed | read p99 latency | 407.552 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 304.32 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 74,296.89 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 292.864 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 411.648 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 716.8 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 130.501 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 31,860.705 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 268.288 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 391.168 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 460.8 us |
| Disk write · repetition 3 | passed | write bandwidth | 2,362.982 MB/s |
| Disk write · repetition 3 | passed | write operations | 2,253.515 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 12,255.232 us |
| Disk write · repetition 3 | passed | write p95 latency | 21,889.024 us |
| Disk write · repetition 3 | passed | write p99 latency | 76,021.76 us |
| Disk read · repetition 3 | passed | read bandwidth | 3,800.97 MB/s |
| Disk read · repetition 3 | passed | read operations | 3,624.888 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 8,454.144 us |
| Disk read · repetition 3 | passed | read p95 latency | 14,352.384 us |
| Disk read · repetition 3 | passed | read p99 latency | 17,432.576 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 393.371 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 96,037.899 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 325.632 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 468.992 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 528.384 us |
| Disk randread · repetition 3 | passed | read bandwidth | 476.186 MB/s |
| Disk randread · repetition 3 | passed | read operations | 116,256.358 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 268.288 us |
| Disk randread · repetition 3 | passed | read p95 latency | 358.4 us |
| Disk randread · repetition 3 | passed | read p99 latency | 399.36 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 304.606 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 74,366.588 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 296.96 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 411.648 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 700.416 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 130.627 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 31,891.27 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 264.192 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 391.168 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 460.8 us |
Network performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Network upload endpoint 1 · repetition 1 | passed | Sender throughput | 100.157 Mbit/s |
| Network upload endpoint 1 · repetition 1 | passed | Receiver throughput | 97.574 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.038 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 99.946 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 131.272 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.156 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 97.462 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.129 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 99.946 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 136.731 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 3,854.028 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 1.035 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 4,251.058 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 0.938 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 4,089.162 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 0.976 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 3,259.557 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 1.225 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 3,441.353 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 1.16 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 3,285.071 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 1.216 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.