AI-assisted review
Instance benchmarkVultr
vc2-2c-4gb
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.
428.02events/s
1 threads
1 threads
841.32events/s
2 threads
2 threads
- 1 threads428.02
- 2 threads841.32
Within-run medians; thread counts retain their recorded allocation.
Compression · 177.185 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read6,064.94 MiB/s
Write6,506.3 MiB/s
- Read6,064.94
- Write6,506.3
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 | 254.775 MB/s | Not measured | 242.972 IOPS | Not measured | 248,512.512 us |
| read | 264.306 MB/s | Not measured | 252.061 IOPS | Not measured | 187,695.104 us | Not measured |
| randwrite | Not measured | 84.202 MB/s | Not measured | 20,557.163 IOPS | Not measured | 2,539.52 us |
| randread | 177.634 MB/s | Not measured | 43,367.588 IOPS | Not measured | 1,171.456 us | Not measured |
| randrw | 96.442 MB/s | 41.371 MB/s | 23,545.503 IOPS | 10,100.437 IOPS | 2,023.424 us | 1,892.352 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 | 97.485 Mbit/s | 136.139 ms |
| London endpoint 2 | 99.944 Mbit/s | 97.489 Mbit/s | 136.364 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 | 2,330.262 transactions/s | 1.714 ms |
| storage | 1,508.928 transactions/s | 2.649 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
Window1969 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 | vc2-2c-4gb · supplied |
| CPU | Intel Xeon Processor (Skylake, IBRS) |
| 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 | 2026-10-17T11:43:29.741Z |
| Finished | 2026-10-17T12:16:18.685Z |
| 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 | 429.57 events/s |
| CPU 2 thread(s) · repetition 1 | passed | Events per second | 841.56 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 428.02 events/s |
| CPU 2 thread(s) · repetition 2 | passed | Events per second | 814.43 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 425.91 events/s |
| CPU 2 thread(s) · repetition 3 | passed | Events per second | 841.32 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 177.185 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 8,036.35 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 8,047.09 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 6,039.53 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 6,506.3 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 6,064.94 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 6,347.99 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 254.775 MB/s |
| Disk write · repetition 1 | passed | write operations | 242.972 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 103,284.736 us |
| Disk write · repetition 1 | passed | write p95 latency | 265,289.728 us |
| Disk write · repetition 1 | passed | write p99 latency | 316,669.952 us |
| Disk read · repetition 1 | passed | read bandwidth | 263.606 MB/s |
| Disk read · repetition 1 | passed | read operations | 251.395 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 123,207.68 us |
| Disk read · repetition 1 | passed | read p95 latency | 202,375.168 us |
| Disk read · repetition 1 | passed | read p99 latency | 270,532.608 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 79.648 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 19,445.27 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 856.064 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 2,801.664 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 21,102.592 us |
| Disk randread · repetition 1 | passed | read bandwidth | 177.634 MB/s |
| Disk randread · repetition 1 | passed | read operations | 43,367.588 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 675.84 us |
| Disk randread · repetition 1 | passed | read p95 latency | 1,155.072 us |
| Disk randread · repetition 1 | passed | read p99 latency | 2,007.04 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 96.442 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 23,545.503 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 749.568 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 2,023.424 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 2,736.128 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 41.371 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 10,100.437 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 643.072 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 1,892.352 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 7,241.728 us |
| Disk write · repetition 2 | passed | write bandwidth | 222.564 MB/s |
| Disk write · repetition 2 | passed | write operations | 212.254 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 137,363.456 us |
| Disk write · repetition 2 | passed | write p95 latency | 248,512.512 us |
| Disk write · repetition 2 | passed | write p99 latency | 438,304.768 us |
| Disk read · repetition 2 | passed | read bandwidth | 268.295 MB/s |
| Disk read · repetition 2 | passed | read operations | 255.866 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 124,256.256 us |
| Disk read · repetition 2 | passed | read p95 latency | 170,917.888 us |
| Disk read · repetition 2 | passed | read p99 latency | 254,803.968 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 84.202 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 20,557.163 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 847.872 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 2,211.84 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 19,529.728 us |
| Disk randread · repetition 2 | passed | read bandwidth | 170.166 MB/s |
| Disk randread · repetition 2 | passed | read operations | 41,544.382 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 708.608 us |
| Disk randread · repetition 2 | passed | read p95 latency | 1,220.608 us |
| Disk randread · repetition 2 | passed | read p99 latency | 2,039.808 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 93.896 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 22,923.736 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 774.144 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 2,056.192 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 2,736.128 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 40.269 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 9,831.245 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 708.608 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 2,039.808 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 7,241.728 us |
| Disk write · repetition 3 | passed | write bandwidth | 280.758 MB/s |
| Disk write · repetition 3 | passed | write operations | 267.751 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 107,479.04 us |
| Disk write · repetition 3 | passed | write p95 latency | 212,860.928 us |
| Disk write · repetition 3 | passed | write p99 latency | 299,892.736 us |
| Disk read · repetition 3 | passed | read bandwidth | 264.306 MB/s |
| Disk read · repetition 3 | passed | read operations | 252.061 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 124,256.256 us |
| Disk read · repetition 3 | passed | read p95 latency | 187,695.104 us |
| Disk read · repetition 3 | passed | read p99 latency | 231,735.296 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 84.686 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 20,675.411 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 831.488 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 2,539.52 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 19,791.872 us |
| Disk randread · repetition 3 | passed | read bandwidth | 179.546 MB/s |
| Disk randread · repetition 3 | passed | read operations | 43,834.472 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 667.648 us |
| Disk randread · repetition 3 | passed | read p95 latency | 1,171.456 us |
| Disk randread · repetition 3 | passed | read p99 latency | 1,908.736 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 98.747 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 24,108.226 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 749.568 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 1,990.656 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 2,637.824 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 42.337 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 10,336.078 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 643.072 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 1,875.968 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 7,634.944 us |
Network performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Network upload endpoint 1 · repetition 1 | passed | Sender throughput | 100.154 Mbit/s |
| Network upload endpoint 1 · repetition 1 | passed | Receiver throughput | 97.485 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.076 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 99.946 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 136.139 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.152 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 97.489 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.109 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 99.944 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 136.364 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 2,495.559 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 1.6 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 2,051.846 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 1.946 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 2,330.262 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 1.714 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 1,088.631 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 3.672 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 1,508.928 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 2.649 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 1,727.45 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 2.313 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.