AI-assisted review
Instance benchmarkVultr
voc-c-2c-4gb-50s-amd
The complete benchmark report. Every workload, in one place.
2 vCPU3.8 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.
1,655.14events/s
1 threads
1 threads
3,298.12events/s
2 threads
2 threads
- 1 threads1,655.14
- 2 threads3,298.12
Within-run medians; thread counts retain their recorded allocation.
Compression · 242.074 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read31,815.51 MiB/s
Write24,582.02 MiB/s
- Read31,815.51
- Write24,582.02
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 | 1,901.459 MB/s | Not measured | 1,813.373 IOPS | Not measured | 28,442.624 us |
| read | 3,296.403 MB/s | Not measured | 3,143.695 IOPS | Not measured | 17,432.576 us | Not measured |
| randwrite | Not measured | 393.92 MB/s | Not measured | 96,171.994 IOPS | Not measured | 481.28 us |
| randread | 471.388 MB/s | Not measured | 115,084.931 IOPS | Not measured | 366.592 us | Not measured |
| randrw | 304.759 MB/s | 130.699 MB/s | 74,403.953 IOPS | 31,909.003 IOPS | 415.744 us | 382.976 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 | 100.093 Mbit/s | 2.846 ms |
| London endpoint 2 | 100.12 Mbit/s | 100.149 Mbit/s | 0.363 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 | 4,161.467 transactions/s | 0.959 ms |
| storage | 3,407.599 transactions/s | 1.172 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
Window2648 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-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 | 2026-10-17T11:41:59.545Z |
| Finished | 2026-10-17T12:26:07.363Z |
| 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 | 1,663.84 events/s |
| CPU 2 thread(s) · repetition 1 | passed | Events per second | 3,314.38 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 1,655.14 events/s |
| CPU 2 thread(s) · repetition 2 | passed | Events per second | 3,288.57 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 1,653.5 events/s |
| CPU 2 thread(s) · repetition 3 | passed | Events per second | 3,298.12 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 242.074 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 31,815.51 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 25,276.86 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 31,219.65 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 24,399.93 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 32,940.04 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 24,582.02 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 1,949.557 MB/s |
| Disk write · repetition 1 | passed | write operations | 1,859.242 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 16,187.392 us |
| Disk write · repetition 1 | passed | write p95 latency | 28,442.624 us |
| Disk write · repetition 1 | passed | write p99 latency | 38,010.88 us |
| Disk read · repetition 1 | passed | read bandwidth | 2,755.539 MB/s |
| Disk read · repetition 1 | passed | read operations | 2,627.887 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 11,337.728 us |
| Disk read · repetition 1 | passed | read p95 latency | 20,578.304 us |
| Disk read · repetition 1 | passed | read p99 latency | 25,296.896 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 393.189 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 95,993.334 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 325.632 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 481.28 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 552.96 us |
| Disk randread · repetition 1 | passed | read bandwidth | 471.388 MB/s |
| Disk randread · repetition 1 | passed | read operations | 115,084.931 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 268.288 us |
| Disk randread · repetition 1 | passed | read p95 latency | 366.592 us |
| Disk randread · repetition 1 | passed | read p99 latency | 411.648 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 302.696 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 73,900.47 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 309.248 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 419.84 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 493.568 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 129.806 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 31,690.877 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 246.784 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 382.976 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 489.472 us |
| Disk write · repetition 2 | passed | write bandwidth | 1,640.285 MB/s |
| Disk write · repetition 2 | passed | write operations | 1,564.297 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 19,791.872 us |
| Disk write · repetition 2 | passed | write p95 latency | 30,539.776 us |
| Disk write · repetition 2 | passed | write p99 latency | 37,486.592 us |
| Disk read · repetition 2 | passed | read bandwidth | 3,296.403 MB/s |
| Disk read · repetition 2 | passed | read operations | 3,143.695 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 9,502.72 us |
| Disk read · repetition 2 | passed | read p95 latency | 17,432.576 us |
| Disk read · repetition 2 | passed | read p99 latency | 21,889.024 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 393.92 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 96,171.994 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 325.632 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 481.28 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 544.768 us |
| Disk randread · repetition 2 | passed | read bandwidth | 477.071 MB/s |
| Disk randread · repetition 2 | passed | read operations | 116,472.484 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 264.192 us |
| Disk randread · repetition 2 | passed | read p95 latency | 358.4 us |
| Disk randread · repetition 2 | passed | read p99 latency | 403.456 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 304.759 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 74,403.953 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 309.248 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 411.648 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 477.184 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 130.699 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 31,909.003 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 246.784 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 378.88 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 473.088 us |
| Disk write · repetition 3 | passed | write bandwidth | 1,901.459 MB/s |
| Disk write · repetition 3 | passed | write operations | 1,813.373 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 16,711.68 us |
| Disk write · repetition 3 | passed | write p95 latency | 27,918.336 us |
| Disk write · repetition 3 | passed | write p99 latency | 38,535.168 us |
| Disk read · repetition 3 | passed | read bandwidth | 3,763.676 MB/s |
| Disk read · repetition 3 | passed | read operations | 3,589.321 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 8,028.16 us |
| Disk read · repetition 3 | passed | read p95 latency | 16,580.608 us |
| Disk read · repetition 3 | passed | read p99 latency | 20,840.448 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 398.497 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 97,289.29 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 321.536 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 | 470.983 MB/s |
| Disk randread · repetition 3 | passed | read operations | 114,986.2 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 268.288 us |
| Disk randread · repetition 3 | passed | read p95 latency | 366.592 us |
| Disk randread · repetition 3 | passed | read p99 latency | 411.648 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 305.051 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 74,475.384 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 305.152 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 415.744 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 485.376 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 130.826 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 31,939.935 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 246.784 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 387.072 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 489.472 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 | 100.093 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 | 2.846 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.157 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 100.149 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.115 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 100.12 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 0.363 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 3,917.238 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 1.019 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 4,215.494 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 0.946 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 4,161.467 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 0.959 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 3,363.054 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 1.187 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 3,407.599 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 1.172 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 3,484.461 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 1.146 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.