AI-assisted review
Instance benchmarkVultr
vc2-2c-4gb
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.
317.57events/s
1 threads
1 threads
622.65events/s
2 threads
2 threads
- 1 threads317.57
- 2 threads622.65
Within-run medians; thread counts retain their recorded allocation.
Compression · 144.803 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read8,310.15 MiB/s
Write6,316.27 MiB/s
- Read8,310.15
- Write6,316.27
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 | 360.335 MB/s | Not measured | 343.642 IOPS | Not measured | 112,721.92 us |
| read | 373.142 MB/s | Not measured | 355.856 IOPS | Not measured | 109,576.192 us | Not measured |
| randwrite | Not measured | 159.388 MB/s | Not measured | 38,913.036 IOPS | Not measured | 1,105.92 us |
| randread | 234.277 MB/s | Not measured | 57,196.627 IOPS | Not measured | 946.176 us | Not measured |
| randrw | 136.649 MB/s | 58.577 MB/s | 33,361.588 IOPS | 14,300.99 IOPS | 1,122.304 us | 823.296 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 | 100.114 Mbit/s | 3.323 ms |
| London endpoint 2 | 100.12 Mbit/s | 100.138 Mbit/s | 0.399 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 | 1,870.488 transactions/s | 2.135 ms |
| storage | 1,483.781 transactions/s | 2.693 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
Window1839 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 | vc2-2c-4gb · supplied |
| CPU | Intel Core Processor (Broadwell, no TSX, 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 | 04ef317a427395210a1b23d06864352aa183ecbd6b7d0717ee926af7a9301069 |
| Started | 2026-10-17T11:43:31.136Z |
| Finished | 2026-10-17T12:14:10.381Z |
| 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 | 318.61 events/s |
| CPU 2 thread(s) · repetition 1 | passed | Events per second | 622.65 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 313.77 events/s |
| CPU 2 thread(s) · repetition 2 | passed | Events per second | 613.96 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 317.57 events/s |
| CPU 2 thread(s) · repetition 3 | passed | Events per second | 624.05 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 144.803 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 8,310.15 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 6,316.27 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 8,185.26 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 6,318.9 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 8,500.85 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 6,255.96 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 360.335 MB/s |
| Disk write · repetition 1 | passed | write operations | 343.642 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 92,798.976 us |
| Disk write · repetition 1 | passed | write p95 latency | 112,721.92 us |
| Disk write · repetition 1 | passed | write p99 latency | 147,849.216 us |
| Disk read · repetition 1 | passed | read bandwidth | 393.517 MB/s |
| Disk read · repetition 1 | passed | read operations | 375.287 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 85,458.944 us |
| Disk read · repetition 1 | passed | read p95 latency | 102,236.16 us |
| Disk read · repetition 1 | passed | read p99 latency | 116,916.224 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 160.031 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 39,070.164 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 757.76 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 1,073.152 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 1,384.448 us |
| Disk randread · repetition 1 | passed | read bandwidth | 241.333 MB/s |
| Disk randread · repetition 1 | passed | read operations | 58,919.236 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 493.568 us |
| Disk randread · repetition 1 | passed | read p95 latency | 929.792 us |
| Disk randread · repetition 1 | passed | read p99 latency | 1,236.992 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 141.416 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 34,525.482 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 659.456 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 1,089.536 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 1,859.584 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 60.614 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 14,798.34 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 481.28 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 765.952 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 954.368 us |
| Disk write · repetition 2 | passed | write bandwidth | 364.346 MB/s |
| Disk write · repetition 2 | passed | write operations | 347.468 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 91,750.4 us |
| Disk write · repetition 2 | passed | write p95 latency | 110,624.768 us |
| Disk write · repetition 2 | passed | write p99 latency | 143,654.912 us |
| Disk read · repetition 2 | passed | read bandwidth | 373.142 MB/s |
| Disk read · repetition 2 | passed | read operations | 355.856 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 88,604.672 us |
| Disk read · repetition 2 | passed | read p95 latency | 109,576.192 us |
| Disk read · repetition 2 | passed | read p99 latency | 123,207.68 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 153.881 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 37,568.581 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 798.72 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 1,138.688 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 1,597.44 us |
| Disk randread · repetition 2 | passed | read bandwidth | 234.277 MB/s |
| Disk randread · repetition 2 | passed | read operations | 57,196.627 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 514.048 us |
| Disk randread · repetition 2 | passed | read p95 latency | 946.176 us |
| Disk randread · repetition 2 | passed | read p99 latency | 1,236.992 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 136.649 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 33,361.588 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 667.648 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 1,155.072 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 2,179.072 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 58.577 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 14,300.99 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 493.568 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 831.488 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 1,155.072 us |
| Disk write · repetition 3 | passed | write bandwidth | 341.167 MB/s |
| Disk write · repetition 3 | passed | write operations | 325.362 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 98,041.856 us |
| Disk write · repetition 3 | passed | write p95 latency | 122,159.104 us |
| Disk write · repetition 3 | passed | write p99 latency | 156,237.824 us |
| Disk read · repetition 3 | passed | read bandwidth | 368.443 MB/s |
| Disk read · repetition 3 | passed | read operations | 351.375 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 89,653.248 us |
| Disk read · repetition 3 | passed | read p95 latency | 114,819.072 us |
| Disk read · repetition 3 | passed | read p99 latency | 130,547.712 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 159.388 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 38,913.036 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 765.952 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 1,105.92 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 1,515.52 us |
| Disk randread · repetition 3 | passed | read bandwidth | 229.375 MB/s |
| Disk randread · repetition 3 | passed | read operations | 55,999.7 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 518.144 us |
| Disk randread · repetition 3 | passed | read p95 latency | 962.56 us |
| Disk randread · repetition 3 | passed | read p99 latency | 1,302.528 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 136.531 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 33,332.867 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 667.648 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 1,122.304 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 2,056.192 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 58.525 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 14,288.271 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 493.568 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 823.296 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 1,138.688 us |
Network performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Network upload endpoint 1 · repetition 1 | passed | Sender throughput | 100.152 Mbit/s |
| Network upload endpoint 1 · repetition 1 | passed | Receiver throughput | 100.114 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.083 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 100.121 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 3.323 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.153 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 100.138 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.11 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 100.12 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 0.399 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 1,674.61 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 2.384 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 1,945.909 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 2.052 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 1,870.488 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 2.135 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 1,497.639 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 2.668 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 1,483.781 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 2.693 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 1,421.351 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 2.811 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.