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.
1,502.93events/s
1 threads
1 threads
2,973.35events/s
2 threads
2 threads
- 1 threads1,502.93
- 2 threads2,973.35
Within-run medians; thread counts retain their recorded allocation.
Compression · 207.474 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read17,136.93 MiB/s
Write16,622.03 MiB/s
- Read17,136.93
- Write16,622.03
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 | 3,195.381 MB/s | Not measured | 3,047.352 IOPS | Not measured | 12,648.448 us |
| read | 3,386.987 MB/s | Not measured | 3,230.082 IOPS | Not measured | 12,779.52 us | Not measured |
| randwrite | Not measured | 375.162 MB/s | Not measured | 91,592.38 IOPS | Not measured | 501.76 us |
| randread | 429.135 MB/s | Not measured | 104,769.208 IOPS | Not measured | 411.648 us | Not measured |
| randrw | 270.808 MB/s | 116.078 MB/s | 66,115.329 IOPS | 28,339.422 IOPS | 501.76 us | 514.048 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 | 99.956 Mbit/s | 97.304 Mbit/s | 136.182 ms |
| London endpoint 2 | 99.943 Mbit/s | 97.484 Mbit/s | 137.316 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 | 2,998.176 transactions/s | 1.331 ms |
| storage | 2,548.079 transactions/s | 1.568 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
Window3408 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-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 | 3a7e9b940384dfeab59279863abbb7444bc63579f8e7d90021e5b868a078b00b |
| Started | 2026-10-17T11:42:13.717Z |
| Finished | 2026-10-17T12:39:01.547Z |
| 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 | 1,508.55 events/s |
| CPU 2 thread(s) · repetition 1 | passed | Events per second | 3,000.36 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 1,502.45 events/s |
| CPU 2 thread(s) · repetition 2 | passed | Events per second | 2,967.56 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 1,502.93 events/s |
| CPU 2 thread(s) · repetition 3 | passed | Events per second | 2,973.35 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 207.474 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 17,126.32 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 16,635.33 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 17,136.93 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 16,622.03 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 17,221.69 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 16,587.77 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 3,195.381 MB/s |
| Disk write · repetition 1 | passed | write operations | 3,047.352 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 10,289.152 us |
| Disk write · repetition 1 | passed | write p95 latency | 12,648.448 us |
| Disk write · repetition 1 | passed | write p99 latency | 14,483.456 us |
| Disk read · repetition 1 | passed | read bandwidth | 3,328.888 MB/s |
| Disk read · repetition 1 | passed | read operations | 3,174.675 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 9,764.864 us |
| Disk read · repetition 1 | passed | read p95 latency | 13,172.736 us |
| Disk read · repetition 1 | passed | read p99 latency | 16,580.608 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 375.162 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 91,592.38 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 325.632 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 489.472 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 684.032 us |
| Disk randread · repetition 1 | passed | read bandwidth | 428.611 MB/s |
| Disk randread · repetition 1 | passed | read operations | 104,641.345 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 288.768 us |
| Disk randread · repetition 1 | passed | read p95 latency | 411.648 us |
| Disk randread · repetition 1 | passed | read p99 latency | 501.76 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 270.331 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 65,998.9 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 317.44 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 509.952 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 684.032 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 115.886 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 28,292.457 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 284.672 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 528.384 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 774.144 us |
| Disk write · repetition 2 | passed | write bandwidth | 3,195.976 MB/s |
| Disk write · repetition 2 | passed | write operations | 3,047.921 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 10,289.152 us |
| Disk write · repetition 2 | passed | write p95 latency | 12,255.232 us |
| Disk write · repetition 2 | passed | write p99 latency | 14,221.312 us |
| Disk read · repetition 2 | passed | read bandwidth | 3,421.875 MB/s |
| Disk read · repetition 2 | passed | read operations | 3,263.354 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 9,633.792 us |
| Disk read · repetition 2 | passed | read p95 latency | 12,779.52 us |
| Disk read · repetition 2 | passed | read p99 latency | 15,138.816 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 372.02 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 90,825.206 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 321.536 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 522.24 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 724.992 us |
| Disk randread · repetition 2 | passed | read bandwidth | 429.135 MB/s |
| Disk randread · repetition 2 | passed | read operations | 104,769.208 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 288.768 us |
| Disk randread · repetition 2 | passed | read p95 latency | 428.032 us |
| Disk randread · repetition 2 | passed | read p99 latency | 536.576 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 270.808 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 66,115.329 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 321.536 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 501.76 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 675.84 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 116.078 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 28,339.422 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 288.768 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 514.048 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 749.568 us |
| Disk write · repetition 3 | passed | write bandwidth | 3,147.58 MB/s |
| Disk write · repetition 3 | passed | write operations | 3,001.766 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 10,420.224 us |
| Disk write · repetition 3 | passed | write p95 latency | 13,828.096 us |
| Disk write · repetition 3 | passed | write p99 latency | 17,170.432 us |
| Disk read · repetition 3 | passed | read bandwidth | 3,386.987 MB/s |
| Disk read · repetition 3 | passed | read operations | 3,230.082 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 9,764.864 us |
| Disk read · repetition 3 | passed | read p95 latency | 12,124.16 us |
| Disk read · repetition 3 | passed | read p99 latency | 14,090.24 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 379.758 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 92,714.476 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 317.44 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 501.76 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 667.648 us |
| Disk randread · repetition 3 | passed | read bandwidth | 430.996 MB/s |
| Disk randread · repetition 3 | passed | read operations | 105,223.626 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 288.768 us |
| Disk randread · repetition 3 | passed | read p95 latency | 407.552 us |
| Disk randread · repetition 3 | passed | read p99 latency | 497.664 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 283.549 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 69,225.759 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 313.344 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 460.8 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 585.728 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 121.555 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 29,676.611 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 276.48 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 452.608 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 643.072 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 | 97.304 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.113 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 99.956 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 136.182 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.158 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 97.484 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.127 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 99.943 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 137.316 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 2,998.176 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 1.331 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 2,994.322 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 1.333 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 3,008.177 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 1.327 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 2,530.777 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 1.578 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 2,567.478 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 1.556 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 2,548.079 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 1.568 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.