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.
421.16events/s
1 threads
1 threads
827.18events/s
2 threads
2 threads
- 1 threads421.16
- 2 threads827.18
Within-run medians; thread counts retain their recorded allocation.
Compression · 178.232 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read7,293.9 MiB/s
Write7,273.5 MiB/s
- Read7,293.9
- Write7,273.5
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 | 193.971 MB/s | Not measured | 184.985 IOPS | Not measured | 238,026.752 us |
| read | 316.492 MB/s | Not measured | 301.83 IOPS | Not measured | 145,752.064 us | Not measured |
| randwrite | Not measured | 101.626 MB/s | Not measured | 24,811.006 IOPS | Not measured | 2,211.84 us |
| randread | 187.066 MB/s | Not measured | 45,670.322 IOPS | Not measured | 1,073.152 us | Not measured |
| randrw | 111.349 MB/s | 47.745 MB/s | 27,184.727 IOPS | 11,656.578 IOPS | 1,892.352 us | 1,531.904 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 | 99.945 Mbit/s | 97.559 Mbit/s | 138.75 ms |
| London endpoint 2 | 99.944 Mbit/s | 97.469 Mbit/s | 136.311 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 | 1,938.043 transactions/s | 2.06 ms |
| storage | 1,783.73 transactions/s | 2.24 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
Window2010 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 | df52887e1ad7a6ee507622793a7787580c82a7d96be0379d411a6cf83dbb7457 |
| Started | 2026-10-17T11:43:33.834Z |
| Finished | 2026-10-17T12:17:04.010Z |
| 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 | 400.35 events/s |
| CPU 2 thread(s) · repetition 1 | passed | Events per second | 843.69 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 421.17 events/s |
| CPU 2 thread(s) · repetition 2 | passed | Events per second | 819.71 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 421.16 events/s |
| CPU 2 thread(s) · repetition 3 | passed | Events per second | 827.18 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 178.232 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 7,664.9 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 7,273.5 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 7,293.9 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 7,611.9 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 6,462.1 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 6,778.76 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 193.971 MB/s |
| Disk write · repetition 1 | passed | write operations | 184.985 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 147,849.216 us |
| Disk write · repetition 1 | passed | write p95 latency | 223,346.688 us |
| Disk write · repetition 1 | passed | write p99 latency | 1,216,348.16 us |
| Disk read · repetition 1 | passed | read bandwidth | 310.33 MB/s |
| Disk read · repetition 1 | passed | read operations | 295.954 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 120,061.952 us |
| Disk read · repetition 1 | passed | read p95 latency | 152,043.52 us |
| Disk read · repetition 1 | passed | read p99 latency | 179,306.496 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 97.248 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 23,742.209 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 839.68 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 2,375.68 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 17,694.72 us |
| Disk randread · repetition 1 | passed | read bandwidth | 185.831 MB/s |
| Disk randread · repetition 1 | passed | read operations | 45,368.975 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 659.456 us |
| Disk randread · repetition 1 | passed | read p95 latency | 1,073.152 us |
| Disk randread · repetition 1 | passed | read p99 latency | 1,548.288 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 108.686 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 26,534.707 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 692.224 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 1,941.504 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 2,605.056 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 46.588 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 11,374.039 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 528.384 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 1,564.672 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 6,979.584 us |
| Disk write · repetition 2 | passed | write bandwidth | 225.509 MB/s |
| Disk write · repetition 2 | passed | write operations | 215.062 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 143,654.912 us |
| Disk write · repetition 2 | passed | write p95 latency | 248,512.512 us |
| Disk write · repetition 2 | passed | write p99 latency | 358,612.992 us |
| Disk read · repetition 2 | passed | read bandwidth | 316.492 MB/s |
| Disk read · repetition 2 | passed | read operations | 301.83 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 116,916.224 us |
| Disk read · repetition 2 | passed | read p95 latency | 145,752.064 us |
| Disk read · repetition 2 | passed | read p99 latency | 162,529.28 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 111.2 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 27,148.528 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 741.376 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 1,794.048 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 15,007.744 us |
| Disk randread · repetition 2 | passed | read bandwidth | 199.559 MB/s |
| Disk randread · repetition 2 | passed | read operations | 48,720.552 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 626.688 us |
| Disk randread · repetition 2 | passed | read p95 latency | 954.368 us |
| Disk randread · repetition 2 | passed | read p99 latency | 1,449.984 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 116.514 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 28,445.885 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 651.264 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 1,859.584 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 2,473.984 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 49.957 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 12,196.493 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 509.952 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 1,466.368 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 6,717.44 us |
| Disk write · repetition 3 | passed | write bandwidth | 193.785 MB/s |
| Disk write · repetition 3 | passed | write operations | 184.808 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 145,752.064 us |
| Disk write · repetition 3 | passed | write p95 latency | 238,026.752 us |
| Disk write · repetition 3 | passed | write p99 latency | 1,266,679.808 us |
| Disk read · repetition 3 | passed | read bandwidth | 323.962 MB/s |
| Disk read · repetition 3 | passed | read operations | 308.954 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 112,721.92 us |
| Disk read · repetition 3 | passed | read p95 latency | 145,752.064 us |
| Disk read · repetition 3 | passed | read p99 latency | 162,529.28 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 101.626 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 24,811.006 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 815.104 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 2,211.84 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 16,187.392 us |
| Disk randread · repetition 3 | passed | read bandwidth | 187.066 MB/s |
| Disk randread · repetition 3 | passed | read operations | 45,670.322 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 659.456 us |
| Disk randread · repetition 3 | passed | read p95 latency | 1,089.536 us |
| Disk randread · repetition 3 | passed | read p99 latency | 1,564.672 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 111.349 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 27,184.727 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 692.224 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 1,892.352 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 2,506.752 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 47.745 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 11,656.578 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 536.576 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 1,531.904 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 8,028.16 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 | 97.559 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.015 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 99.945 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 138.75 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.155 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 97.469 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.123 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 99.944 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 136.311 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 2,330.091 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 1.713 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 1,938.043 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 2.06 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 1,437.066 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 2.78 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 1,774.507 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 2.252 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 1,783.73 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 2.24 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 2,030.456 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 1.967 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.