AI-assisted review
Instance benchmarkVultr
voc-c-2c-4gb-50s-amd
The complete benchmark report. Every workload, in one place.
2 vCPU3.8 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.
1,352.19events/s
1 threads
1 threads
2,682.83events/s
2 threads
2 threads
- 1 threads1,352.19
- 2 threads2,682.83
Within-run medians; thread counts retain their recorded allocation.
Compression · 180.893 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read13,842.17 MiB/s
Write13,202.44 MiB/s
- Read13,842.17
- Write13,202.44
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 | 2,995.304 MB/s | Not measured | 2,856.544 IOPS | Not measured | 18,481.152 us |
| read | 4,321.808 MB/s | Not measured | 4,121.597 IOPS | Not measured | 13,041.664 us | Not measured |
| randwrite | Not measured | 318.222 MB/s | Not measured | 77,690.91 IOPS | Not measured | 569.344 us |
| randread | 395.483 MB/s | Not measured | 96,553.515 IOPS | Not measured | 436.224 us | Not measured |
| randrw | 254.371 MB/s | 109.058 MB/s | 62,102.297 IOPS | 26,625.446 IOPS | 514.048 us | 544.768 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 | 99.946 Mbit/s | 97.002 Mbit/s | 138.462 ms |
| London endpoint 2 | 99.946 Mbit/s | 95.27 Mbit/s | 249.193 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 | 2,299.013 transactions/s | 1.736 ms |
| storage | 2,124.697 transactions/s | 1.88 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
Window3741 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-2c-4gb-50s-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 | 73098e9168a59c8bc3ca371424e5a0427f49551be23b20bd5f4de867fc514f0d |
| Started | 2026-10-17T11:42:41.296Z |
| Finished | 2026-10-17T12:45:02.663Z |
| 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 | 1,352.19 events/s |
| CPU 2 thread(s) · repetition 1 | passed | Events per second | 2,682.83 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 1,352.18 events/s |
| CPU 2 thread(s) · repetition 2 | passed | Events per second | 2,679.42 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 1,352.72 events/s |
| CPU 2 thread(s) · repetition 3 | passed | Events per second | 2,687.52 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 180.893 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 13,842.17 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 13,280.83 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 13,644.54 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 12,955.87 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 14,213.6 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 13,202.44 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 3,113.859 MB/s |
| Disk write · repetition 1 | passed | write operations | 2,969.607 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 9,764.864 us |
| Disk write · repetition 1 | passed | write p95 latency | 15,532.032 us |
| Disk write · repetition 1 | passed | write p99 latency | 68,681.728 us |
| Disk read · repetition 1 | passed | read bandwidth | 4,321.808 MB/s |
| Disk read · repetition 1 | passed | read operations | 4,121.597 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 7,110.656 us |
| Disk read · repetition 1 | passed | read p95 latency | 12,386.304 us |
| Disk read · repetition 1 | passed | read p99 latency | 16,908.288 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 307.318 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 75,028.799 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 395.264 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 610.304 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 765.952 us |
| Disk randread · repetition 1 | passed | read bandwidth | 389.994 MB/s |
| Disk randread · repetition 1 | passed | read operations | 95,213.26 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 317.44 us |
| Disk randread · repetition 1 | passed | read p95 latency | 448.512 us |
| Disk randread · repetition 1 | passed | read p99 latency | 561.152 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 254.371 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 62,102.297 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 | 847.872 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 109.058 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 26,625.446 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 329.728 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 544.768 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 823.296 us |
| Disk write · repetition 2 | passed | write bandwidth | 2,926.277 MB/s |
| Disk write · repetition 2 | passed | write operations | 2,790.716 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 9,764.864 us |
| Disk write · repetition 2 | passed | write p95 latency | 20,316.16 us |
| Disk write · repetition 2 | passed | write p99 latency | 71,827.456 us |
| Disk read · repetition 2 | passed | read bandwidth | 4,380.163 MB/s |
| Disk read · repetition 2 | passed | read operations | 4,177.249 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 6,848.512 us |
| Disk read · repetition 2 | passed | read p95 latency | 13,041.664 us |
| Disk read · repetition 2 | passed | read p99 latency | 17,956.864 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 318.222 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 77,690.91 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 382.976 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 569.344 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 749.568 us |
| Disk randread · repetition 2 | passed | read bandwidth | 402.755 MB/s |
| Disk randread · repetition 2 | passed | read operations | 98,328.922 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 | 514.048 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 259.365 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 63,321.623 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 325.632 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 501.76 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 839.68 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 111.167 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 27,140.295 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 321.536 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 509.952 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 749.568 us |
| Disk write · repetition 3 | passed | write bandwidth | 2,995.304 MB/s |
| Disk write · repetition 3 | passed | write operations | 2,856.544 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 9,895.936 us |
| Disk write · repetition 3 | passed | write p95 latency | 18,481.152 us |
| Disk write · repetition 3 | passed | write p99 latency | 70,778.88 us |
| Disk read · repetition 3 | passed | read bandwidth | 3,816.438 MB/s |
| Disk read · repetition 3 | passed | read operations | 3,639.639 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 7,897.088 us |
| Disk read · repetition 3 | passed | read p95 latency | 13,959.168 us |
| Disk read · repetition 3 | passed | read p99 latency | 34,340.864 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 335.884 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 82,002.9 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 354.304 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 569.344 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 774.144 us |
| Disk randread · repetition 3 | passed | read bandwidth | 395.483 MB/s |
| Disk randread · repetition 3 | passed | read operations | 96,553.515 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 313.344 us |
| Disk randread · repetition 3 | passed | read p95 latency | 436.224 us |
| Disk randread · repetition 3 | passed | read p99 latency | 518.144 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 251.056 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 61,293.024 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 333.824 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 514.048 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 823.296 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 107.633 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 26,277.491 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 333.824 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 544.768 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 831.488 us |
Network performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Network upload endpoint 1 · repetition 1 | passed | Sender throughput | 100.153 Mbit/s |
| Network upload endpoint 1 · repetition 1 | passed | Receiver throughput | 97.002 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.159 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 99.946 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 138.462 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.152 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 95.27 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 99.996 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 99.946 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 249.193 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 2,178.236 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 1.833 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 2,299.013 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 1.736 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 2,505.984 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 1.593 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 2,244.783 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 1.78 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 2,124.697 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 1.88 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 2,086.429 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 1.914 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.