AI-assisted review
Instance benchmarkVultr
vc2-2c-4gb
The complete benchmark report. Every workload, in one place.
2 vCPU3.8 GiB RAMBLRx86_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.
463.62events/s
1 threads
1 threads
915events/s
2 threads
2 threads
- 1 threads463.62
- 2 threads915
Within-run medians; thread counts retain their recorded allocation.
Compression · 207.176 MiB/s · passed
02 /
Memory bandwidth
Sequential read and write · recorded sysbench workload.
Read7,835.53 MiB/s
Write7,607.03 MiB/s
- Read7,835.53
- Write7,607.03
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 | 2,989.163 MB/s | Not measured | 2,850.688 IOPS | Not measured | 11,862.016 us |
| read | 3,464.617 MB/s | Not measured | 3,304.116 IOPS | Not measured | 10,551.296 us | Not measured |
| randwrite | Not measured | 693.033 MB/s | Not measured | 169,197.427 IOPS | Not measured | 305.152 us |
| randread | 624.566 MB/s | Not measured | 152,481.884 IOPS | Not measured | 325.632 us | Not measured |
| randrw | 407.207 MB/s | 174.515 MB/s | 99,415.786 IOPS | 42,606.18 IOPS | 387.072 us | 301.056 us |
Read, write and mixed workloads are recorded separately. These are medians of measured repetitions.
04 /
Network performance
Source: BLR · controlled London endpoints.
| Destination | Download (receiver) | Upload (receiver) | Round-trip mean |
|---|---|---|---|
| London endpoint 1 | 99.946 Mbit/s | 97.31 Mbit/s | 151.828 ms |
| London endpoint 2 | 99.944 Mbit/s | 95.634 Mbit/s | 252.466 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 | 4,048.931 transactions/s | 0.986 ms |
| storage | 3,230.109 transactions/s | 1.237 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
Window2214 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 | BLR · detected |
| Plan | vc2-2c-4gb · supplied |
| CPU | Intel Xeon Processor (Cascadelake) |
| 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 | 2026-10-17T11:42:19.748Z |
| Finished | 2026-10-17T12:19:14.167Z |
| 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 | 467.09 events/s |
| CPU 2 thread(s) · repetition 1 | passed | Events per second | 913.17 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 462.28 events/s |
| CPU 2 thread(s) · repetition 2 | passed | Events per second | 918.19 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 463.62 events/s |
| CPU 2 thread(s) · repetition 3 | passed | Events per second | 915 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 207.176 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 7,915.02 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 7,503.26 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 7,505.16 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 7,618.19 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 7,835.53 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 7,607.03 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 2,981.657 MB/s |
| Disk write · repetition 1 | passed | write operations | 2,843.529 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 11,206.656 us |
| Disk write · repetition 1 | passed | write p95 latency | 11,993.088 us |
| Disk write · repetition 1 | passed | write p99 latency | 13,041.664 us |
| Disk read · repetition 1 | passed | read bandwidth | 3,462.649 MB/s |
| Disk read · repetition 1 | passed | read operations | 3,302.24 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 9,633.792 us |
| Disk read · repetition 1 | passed | read p95 latency | 11,862.016 us |
| Disk read · repetition 1 | passed | read p99 latency | 12,910.592 us |
| Disk randwrite · repetition 1 | passed | write bandwidth | 693.033 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 169,197.427 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 168.96 us |
| Disk randwrite · repetition 1 | passed | write p95 latency | 296.96 us |
| Disk randwrite · repetition 1 | passed | write p99 latency | 374.784 us |
| Disk randread · repetition 1 | passed | read bandwidth | 628.796 MB/s |
| Disk randread · repetition 1 | passed | read operations | 153,514.716 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 193.536 us |
| Disk randread · repetition 1 | passed | read p95 latency | 325.632 us |
| Disk randread · repetition 1 | passed | read p99 latency | 415.744 us |
| Disk randrw · repetition 1 | passed | read bandwidth | 424.667 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 103,678.477 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 222.208 us |
| Disk randrw · repetition 1 | passed | read p95 latency | 370.688 us |
| Disk randrw · repetition 1 | passed | read p99 latency | 464.896 us |
| Disk randrw · repetition 1 | passed | write bandwidth | 182.029 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 44,440.585 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 136.192 us |
| Disk randrw · repetition 1 | passed | write p95 latency | 280.576 us |
| Disk randrw · repetition 1 | passed | write p99 latency | 415.744 us |
| Disk write · repetition 2 | passed | write bandwidth | 2,989.163 MB/s |
| Disk write · repetition 2 | passed | write operations | 2,850.688 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 11,075.584 us |
| Disk write · repetition 2 | passed | write p95 latency | 11,730.944 us |
| Disk write · repetition 2 | passed | write p99 latency | 18,743.296 us |
| Disk read · repetition 2 | passed | read bandwidth | 3,464.617 MB/s |
| Disk read · repetition 2 | passed | read operations | 3,304.116 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 9,633.792 us |
| Disk read · repetition 2 | passed | read p95 latency | 10,289.152 us |
| Disk read · repetition 2 | passed | read p99 latency | 10,944.512 us |
| Disk randwrite · repetition 2 | passed | write bandwidth | 658.033 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 160,652.678 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 181.248 us |
| Disk randwrite · repetition 2 | passed | write p95 latency | 317.44 us |
| Disk randwrite · repetition 2 | passed | write p99 latency | 391.168 us |
| Disk randread · repetition 2 | passed | read bandwidth | 624.566 MB/s |
| Disk randread · repetition 2 | passed | read operations | 152,481.884 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 195.584 us |
| Disk randread · repetition 2 | passed | read p95 latency | 325.632 us |
| Disk randread · repetition 2 | passed | read p99 latency | 436.224 us |
| Disk randrw · repetition 2 | passed | read bandwidth | 406.485 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 99,239.492 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 228.352 us |
| Disk randrw · repetition 2 | passed | read p95 latency | 387.072 us |
| Disk randrw · repetition 2 | passed | read p99 latency | 481.28 us |
| Disk randrw · repetition 2 | passed | write bandwidth | 174.192 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 42,527.382 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 150.528 us |
| Disk randrw · repetition 2 | passed | write p95 latency | 321.536 us |
| Disk randrw · repetition 2 | passed | write p99 latency | 489.472 us |
| Disk write · repetition 3 | passed | write bandwidth | 3,174.344 MB/s |
| Disk write · repetition 3 | passed | write operations | 3,027.29 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 10,551.296 us |
| Disk write · repetition 3 | passed | write p95 latency | 11,862.016 us |
| Disk write · repetition 3 | passed | write p99 latency | 13,565.952 us |
| Disk read · repetition 3 | passed | read bandwidth | 3,464.676 MB/s |
| Disk read · repetition 3 | passed | read operations | 3,304.172 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 9,633.792 us |
| Disk read · repetition 3 | passed | read p95 latency | 10,551.296 us |
| Disk read · repetition 3 | passed | read p99 latency | 13,303.808 us |
| Disk randwrite · repetition 3 | passed | write bandwidth | 695.167 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 169,718.409 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 171.008 us |
| Disk randwrite · repetition 3 | passed | write p95 latency | 305.152 us |
| Disk randwrite · repetition 3 | passed | write p99 latency | 378.88 us |
| Disk randread · repetition 3 | passed | read bandwidth | 622.027 MB/s |
| Disk randread · repetition 3 | passed | read operations | 151,861.971 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 195.584 us |
| Disk randread · repetition 3 | passed | read p95 latency | 325.632 us |
| Disk randread · repetition 3 | passed | read p99 latency | 411.648 us |
| Disk randrw · repetition 3 | passed | read bandwidth | 407.207 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 99,415.786 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 230.4 us |
| Disk randrw · repetition 3 | passed | read p95 latency | 387.072 us |
| Disk randrw · repetition 3 | passed | read p99 latency | 493.568 us |
| Disk randrw · repetition 3 | passed | write bandwidth | 174.515 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 42,606.18 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 150.528 us |
| Disk randrw · repetition 3 | passed | write p95 latency | 301.056 us |
| Disk randrw · repetition 3 | passed | write p99 latency | 440.32 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 | 97.31 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.002 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 99.946 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 151.828 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.157 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 95.634 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.034 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 99.944 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 252.466 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 4,048.931 transactions/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 0.986 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 4,153.012 transactions/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 0.962 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 3,962.389 transactions/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 1.008 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 3,230.109 transactions/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 1.237 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 3,223.42 transactions/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 1.24 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 3,396.548 transactions/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 1.176 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.