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.
416.94events/s
1 threads
1 threads
829.39events/s
2 threads
2 threads
- 1 threads416.94
- 2 threads829.39
Within-run medians; thread counts retain their recorded allocation.
Compression · 180.802 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read7,707.93 MiB/s
Write7,854.6 MiB/s
- Read7,707.93
- Write7,854.6
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 | 499.44 MB/s | Not measured | 476.303 IOPS | Not measured | 73,924.608 us |
| read | 539.359 MB/s | Not measured | 514.373 IOPS | Not measured | 68,681.728 us | Not measured |
| randwrite | Not measured | 295.891 MB/s | Not measured | 72,238.992 IOPS | Not measured | 569.344 us |
| randread | 256.535 MB/s | Not measured | 62,630.512 IOPS | Not measured | 741.376 us | Not measured |
| randrw | 185.987 MB/s | 79.783 MB/s | 45,406.886 IOPS | 19,478.217 IOPS | 954.368 us | 505.856 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 | 99.77 Mbit/s | 97.374 Mbit/s | 136.228 ms |
| London endpoint 2 | 99.945 Mbit/s | 97.478 Mbit/s | 136.992 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 | 1,807.083 transactions/s | 2.21 ms |
| storage | 1,811.926 transactions/s | 2.205 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
Window2147 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 | 04ef317a427395210a1b23d06864352aa183ecbd6b7d0717ee926af7a9301069 |
| Started | 2026-10-17T11:42:13.220Z |
| Finished | 2026-10-17T12:18:00.004Z |
| 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 | 413.93 events/s |
| CPU 2 thread(s) · repetition 1 | passed | Events per second | 817.24 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 416.94 events/s |
| CPU 2 thread(s) · repetition 2 | passed | Events per second | 830.55 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 427.13 events/s |
| CPU 2 thread(s) · repetition 3 | passed | Events per second | 829.39 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 180.802 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 7,707.93 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 7,854.6 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 7,734.46 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 7,923.01 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 7,696.25 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 7,808.85 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 499.44 MB/s |
| Disk write · repetition 1 | passed | write operations | 476.303 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 66,846.72 us |
| Disk write · repetition 1 | passed | write p95 latency | 73,924.608 us |
| Disk write · repetition 1 | passed | write p99 latency | 96,993.28 us |
| Disk read · repetition 1 | passed | read bandwidth | 541.519 MB/s |
| Disk read · repetition 1 | passed | read operations | 516.433 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 61,603.84 us |
| Disk read · repetition 1 | passed | read p95 latency | 68,681.728 us |
| Disk read · repetition 1 | passed | read p99 latency | 80,216.064 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 295.891 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 72,238.992 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 411.648 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 618.496 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 864.256 us |
| Disk randread · repetition 1 | passed | read bandwidth | 256.535 MB/s |
| Disk randread · repetition 1 | passed | read operations | 62,630.512 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 464.896 us |
| Disk randread · repetition 1 | passed | read p95 latency | 741.376 us |
| Disk randread · repetition 1 | passed | read p99 latency | 1,335.296 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 185.987 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 45,406.886 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 464.896 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 937.984 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 2,801.664 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 79.783 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 19,478.217 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 321.536 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 505.856 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 634.88 us |
| Disk write · repetition 2 | passed | write bandwidth | 501.74 MB/s |
| Disk write · repetition 2 | passed | write operations | 478.497 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 66,322.432 us |
| Disk write · repetition 2 | passed | write p95 latency | 73,924.608 us |
| Disk write · repetition 2 | passed | write p99 latency | 102,236.16 us |
| Disk read · repetition 2 | passed | read bandwidth | 531.525 MB/s |
| Disk read · repetition 2 | passed | read operations | 506.902 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 62,652.416 us |
| Disk read · repetition 2 | passed | read p95 latency | 67,633.152 us |
| Disk read · repetition 2 | passed | read p99 latency | 82,313.216 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 313.905 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 76,636.912 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 399.36 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 552.96 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 708.608 us |
| Disk randread · repetition 2 | passed | read bandwidth | 275.89 MB/s |
| Disk randread · repetition 2 | passed | read operations | 67,355.855 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 440.32 us |
| Disk randread · repetition 2 | passed | read p95 latency | 716.8 us |
| Disk randread · repetition 2 | passed | read p99 latency | 1,003.52 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 188.283 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 45,967.638 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 456.704 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 954.368 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 3,031.04 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 80.779 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 19,721.537 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 305.152 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 464.896 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 618.496 us |
| Disk write · repetition 3 | passed | write bandwidth | 498.359 MB/s |
| Disk write · repetition 3 | passed | write operations | 475.272 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 66,322.432 us |
| Disk write · repetition 3 | passed | write p95 latency | 82,313.216 us |
| Disk write · repetition 3 | passed | write p99 latency | 104,333.312 us |
| Disk read · repetition 3 | passed | read bandwidth | 539.359 MB/s |
| Disk read · repetition 3 | passed | read operations | 514.373 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 61,603.84 us |
| Disk read · repetition 3 | passed | read p95 latency | 70,778.88 us |
| Disk read · repetition 3 | passed | read p99 latency | 86,507.52 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 274.686 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 67,061.898 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 403.456 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 569.344 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 757.76 us |
| Disk randread · repetition 3 | passed | read bandwidth | 193.165 MB/s |
| Disk randread · repetition 3 | passed | read operations | 47,159.461 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 460.8 us |
| Disk randread · repetition 3 | passed | read p95 latency | 765.952 us |
| Disk randread · repetition 3 | passed | read p99 latency | 3,031.04 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 137.37 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 33,537.711 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 460.8 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 1,073.152 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 3,325.952 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 58.868 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 14,372.025 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 321.536 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 505.856 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 708.608 us |
Network performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Network upload endpoint 1 · repetition 1 | passed | Sender throughput | 100.155 Mbit/s |
| Network upload endpoint 1 · repetition 1 | passed | Receiver throughput | 97.374 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.027 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 99.77 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 136.228 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.156 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 97.478 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.095 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 99.945 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 136.992 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 1,713.056 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 2.331 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 1,807.083 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 2.21 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 1,889.694 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 2.113 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 1,889.663 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 2.115 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 1,755.006 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 2.277 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 1,811.926 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 2.205 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.