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.
286.82events/s
1 threads
1 threads
546.37events/s
2 threads
2 threads
- 1 threads286.82
- 2 threads546.37
Within-run medians; thread counts retain their recorded allocation.
Compression · 131.837 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read7,976.53 MiB/s
Write6,129.05 MiB/s
- Read7,976.53
- Write6,129.05
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 | 355.116 MB/s | Not measured | 338.665 IOPS | Not measured | 114,819.072 us |
| read | 376.204 MB/s | Not measured | 358.776 IOPS | Not measured | 111,673.344 us | Not measured |
| randwrite | Not measured | 153.531 MB/s | Not measured | 37,483.051 IOPS | Not measured | 1,155.072 us |
| randread | 212.098 MB/s | Not measured | 51,781.622 IOPS | Not measured | 1,056.768 us | Not measured |
| randrw | 127.888 MB/s | 54.848 MB/s | 31,222.726 IOPS | 13,390.587 IOPS | 1,253.376 us | 978.944 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 | 100.12 Mbit/s | 100.113 Mbit/s | 2.979 ms |
| London endpoint 2 | 100.119 Mbit/s | 100.14 Mbit/s | 0.551 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 | 1,564.226 transactions/s | 2.553 ms |
| storage | 1,159.038 transactions/s | 3.448 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
Window1883 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 | 73098e9168a59c8bc3ca371424e5a0427f49551be23b20bd5f4de867fc514f0d |
| Started | 2026-10-17T11:43:53.123Z |
| Finished | 2026-10-17T12:15:15.936Z |
| 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 | 281.65 events/s |
| CPU 2 thread(s) · repetition 1 | passed | Events per second | 540.84 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 292.46 events/s |
| CPU 2 thread(s) · repetition 2 | passed | Events per second | 546.37 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 286.82 events/s |
| CPU 2 thread(s) · repetition 3 | passed | Events per second | 558.92 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 131.837 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 7,776.28 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 5,957.35 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 7,976.53 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 6,129.05 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 8,030.27 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 6,207.45 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 355.116 MB/s |
| Disk write · repetition 1 | passed | write operations | 338.665 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 93,847.552 us |
| Disk write · repetition 1 | passed | write p95 latency | 112,721.92 us |
| Disk write · repetition 1 | passed | write p99 latency | 143,654.912 us |
| Disk read · repetition 1 | passed | read bandwidth | 370.871 MB/s |
| Disk read · repetition 1 | passed | read operations | 353.691 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 88,604.672 us |
| Disk read · repetition 1 | passed | read p95 latency | 114,819.072 us |
| Disk read · repetition 1 | passed | read p99 latency | 143,654.912 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 157.108 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 38,356.521 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 749.568 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 1,155.072 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 2,072.576 us |
| Disk randread · repetition 1 | passed | read bandwidth | 232.537 MB/s |
| Disk randread · repetition 1 | passed | read operations | 56,771.608 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 501.76 us |
| Disk randread · repetition 1 | passed | read p95 latency | 962.56 us |
| Disk randread · repetition 1 | passed | read p99 latency | 1,335.296 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 127.888 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 31,222.726 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 675.84 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 1,253.376 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 2,441.216 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 54.848 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 13,390.587 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 509.952 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 978.944 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 1,744.896 us |
| Disk write · repetition 2 | passed | write bandwidth | 359.761 MB/s |
| Disk write · repetition 2 | passed | write operations | 343.095 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 92,798.976 us |
| Disk write · repetition 2 | passed | write p95 latency | 114,819.072 us |
| Disk write · repetition 2 | passed | write p99 latency | 143,654.912 us |
| Disk read · repetition 2 | passed | read bandwidth | 378.442 MB/s |
| Disk read · repetition 2 | passed | read operations | 360.911 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 87,556.096 us |
| Disk read · repetition 2 | passed | read p95 latency | 109,576.192 us |
| Disk read · repetition 2 | passed | read p99 latency | 121,110.528 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 142.891 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 34,885.608 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 815.104 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 1,318.912 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 2,670.592 us |
| Disk randread · repetition 2 | passed | read bandwidth | 212.098 MB/s |
| Disk randread · repetition 2 | passed | read operations | 51,781.622 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 544.768 us |
| Disk randread · repetition 2 | passed | read p95 latency | 1,073.152 us |
| Disk randread · repetition 2 | passed | read p99 latency | 1,368.064 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 134.781 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 32,905.47 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 667.648 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 1,171.456 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 1,974.272 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 57.787 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 14,108.063 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 493.568 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 905.216 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 1,335.296 us |
| Disk write · repetition 3 | passed | write bandwidth | 338.524 MB/s |
| Disk write · repetition 3 | passed | write operations | 322.841 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 | 376.204 MB/s |
| Disk read · repetition 3 | passed | read operations | 358.776 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 87,556.096 us |
| Disk read · repetition 3 | passed | read p95 latency | 111,673.344 us |
| Disk read · repetition 3 | passed | read p99 latency | 126,353.408 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 153.531 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 37,483.051 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 798.72 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 1,155.072 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 1,613.824 us |
| Disk randread · repetition 3 | passed | read bandwidth | 210.268 MB/s |
| Disk randread · repetition 3 | passed | read operations | 51,334.989 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 561.152 us |
| Disk randread · repetition 3 | passed | read p95 latency | 1,056.768 us |
| Disk randread · repetition 3 | passed | read p99 latency | 1,400.832 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 126.861 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 30,972.034 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 692.224 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 1,253.376 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 2,310.144 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 54.42 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 13,286.19 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 522.24 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 1,011.712 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 1,810.432 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 | 100.113 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.078 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 100.12 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 2.979 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.151 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 100.14 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.109 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 100.119 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 0.551 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 1,564.226 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 2.553 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 1,412.234 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 2.828 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 1,667.529 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 2.395 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 1,287.593 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 3.102 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 1,159.038 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 3.448 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 1,095.3 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 3.648 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.