AI-assisted review
Instance benchmark

Vultr
vc2-2c-4gb

The complete benchmark report. Every workload, in one place.

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2 vCPU3.8 GiB RAMBLRx86_64
Tested 17 Oct 2026 · One deployment · pilot profileUbuntu 24.04.5 LTS · Methodology pilot-1

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.

458.46events/s
1 threads
910.05events/s
2 threads
Events / sec
  • 1 threads
    458.46
  • 2 threads
    910.05

Within-run medians; thread counts retain their recorded allocation.

Compression · 181.496 MiB/s · passed

02 /

Memory bandwidth

Sequential read and write · recorded sysbench workload.

Read7,319.86 MiB/s
Write7,152.62 MiB/s
Throughput (MiB/s)
  • Read
    7,319.86
  • Write
    7,152.62

Memory copy was not measured.

03 /

Disk performance

fio · direct I/O · recorded sequential and random workloads.

WorkloadRead bandwidthWrite bandwidthRead IOPSWrite IOPSRead p95Write p95
writeNot measured2,990.281 MB/sNot measured2,851.754 IOPSNot measured11,862.016 us
read3,458.25 MB/sNot measured3,298.044 IOPSNot measured11,862.016 usNot measured
randwriteNot measured677.801 MB/sNot measured165,478.684 IOPSNot measured301.056 us
randread618.366 MB/sNot measured150,968.368 IOPSNot measured329.728 usNot measured
randrw430.444 MB/s184.523 MB/s105,088.864 IOPS45,049.565 IOPS374.784 us264.192 us

Read, write and mixed workloads are recorded separately. These are medians of measured repetitions.

04 /

Network performance

Source: BLR · controlled London endpoints.

DestinationDownload (receiver)Upload (receiver)Round-trip mean
London endpoint 191.04 Mbit/s97.341 Mbit/s142.568 ms
London endpoint 299.945 Mbit/s95.639 Mbit/s253.147 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 profileTransactions / secAverage latency
memory3,852.526 transactions/s1.036 ms
storage3,241.451 transactions/s1.233 ms

Within-run medians. PostgreSQL latency percentiles were not measured.

06 /

Consistency over time

Recorded outcomes only; no synthetic time-series.

Workload / repetitionOutcomeMetricValue
24-hour consistency · repetition 1skippedNo measured scoreNot 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
Window2116 seconds
report.json
Read the full methodology

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 fieldValue
ProviderVultr · detected
RegionBLR · detected
Planvc2-2c-4gb · supplied
CPUIntel Xeon Processor (Cascadelake)
Architecturex86_64
Kernel6.8.0-146-generic
Virtualizationmicrosoft
Agent0.2.0 (45388107250ca6e26b216f15a9c17b8d405ec1b7+source.ff98e866b26b3ac76b512554)
Dependenciessysbench: 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 hashdf52887e1ad7a6ee507622793a7787580c82a7d96be0379d411a6cf83dbb7457
Started2026-10-17T11:42:16.608Z
Finished2026-10-17T12:17:32.306Z
Execution statuscompleted
Every measured repetition and outcome

CPU performance

Workload / repetitionOutcomeMetricValue
CPU 1 thread(s) · repetition 1passedEvents per second458.46 events/s
CPU 2 thread(s) · repetition 1passedEvents per second908.9 events/s
CPU 1 thread(s) · repetition 2passedEvents per second457.6 events/s
CPU 2 thread(s) · repetition 2passedEvents per second910.05 events/s
CPU 1 thread(s) · repetition 3passedEvents per second459.79 events/s
CPU 2 thread(s) · repetition 3passedEvents per second911.66 events/s
gzip fixed corpus · repetition 1passedCompression input throughput181.496 MiB/s

Memory bandwidth

Workload / repetitionOutcomeMetricValue
Memory read · repetition 1passedBandwidth7,319.86 MiB/s
Memory write · repetition 1passedBandwidth7,072.3 MiB/s
Memory read · repetition 2passedBandwidth7,310.86 MiB/s
Memory write · repetition 2passedBandwidth7,152.62 MiB/s
Memory read · repetition 3passedBandwidth7,454.14 MiB/s
Memory write · repetition 3passedBandwidth7,196.67 MiB/s

Disk performance

Workload / repetitionOutcomeMetricValue
Disk write · repetition 1passedwrite bandwidth2,983.438 MB/s
Disk write · repetition 1passedwrite operations2,845.229 IOPS
Disk write · repetition 1passedwrite p50 latency11,206.656 us
Disk write · repetition 1passedwrite p95 latency11,862.016 us
Disk write · repetition 1passedwrite p99 latency12,779.52 us
Disk read · repetition 1passedread bandwidth3,458.25 MB/s
Disk read · repetition 1passedread operations3,298.044 IOPS
Disk read · repetition 1passedread p50 latency9,633.792 us
Disk read · repetition 1passedread p95 latency11,993.088 us
Disk read · repetition 1passedread p99 latency13,303.808 us
Disk randwrite · repetition 1passedwrite bandwidth677.801 MB/s
Disk randwrite · repetition 1passedwrite operations165,478.684 IOPS
Disk randwrite · repetition 1passedwrite p50 latency175.104 us
Disk randwrite · repetition 1passedwrite p95 latency301.056 us
Disk randwrite · repetition 1passedwrite p99 latency391.168 us
Disk randread · repetition 1passedread bandwidth618.366 MB/s
Disk randread · repetition 1passedread operations150,968.368 IOPS
Disk randread · repetition 1passedread p50 latency195.584 us
Disk randread · repetition 1passedread p95 latency329.728 us
Disk randread · repetition 1passedread p99 latency448.512 us
Disk randrw · repetition 1passedread bandwidth434.889 MB/s
Disk randrw · repetition 1passedread operations106,174.194 IOPS
Disk randrw · repetition 1passedread p50 latency218.112 us
Disk randrw · repetition 1passedread p95 latency374.784 us
Disk randrw · repetition 1passedread p99 latency501.76 us
Disk randrw · repetition 1passedwrite bandwidth186.454 MB/s
Disk randrw · repetition 1passedwrite operations45,520.883 IOPS
Disk randrw · repetition 1passedwrite p50 latency129.536 us
Disk randrw · repetition 1passedwrite p95 latency252.928 us
Disk randrw · repetition 1passedwrite p99 latency374.784 us
Disk write · repetition 2passedwrite bandwidth2,990.281 MB/s
Disk write · repetition 2passedwrite operations2,851.754 IOPS
Disk write · repetition 2passedwrite p50 latency11,075.584 us
Disk write · repetition 2passedwrite p95 latency12,124.16 us
Disk write · repetition 2passedwrite p99 latency13,172.736 us
Disk read · repetition 2passedread bandwidth3,459.902 MB/s
Disk read · repetition 2passedread operations3,299.62 IOPS
Disk read · repetition 2passedread p50 latency9,633.792 us
Disk read · repetition 2passedread p95 latency11,599.872 us
Disk read · repetition 2passedread p99 latency12,648.448 us
Disk randwrite · repetition 2passedwrite bandwidth656.567 MB/s
Disk randwrite · repetition 2passedwrite operations160,294.79 IOPS
Disk randwrite · repetition 2passedwrite p50 latency179.2 us
Disk randwrite · repetition 2passedwrite p95 latency317.44 us
Disk randwrite · repetition 2passedwrite p99 latency415.744 us
Disk randread · repetition 2passedread bandwidth613.759 MB/s
Disk randread · repetition 2passedread operations149,843.572 IOPS
Disk randread · repetition 2passedread p50 latency197.632 us
Disk randread · repetition 2passedread p95 latency342.016 us
Disk randread · repetition 2passedread p99 latency468.992 us
Disk randrw · repetition 2passedread bandwidth430.444 MB/s
Disk randrw · repetition 2passedread operations105,088.864 IOPS
Disk randrw · repetition 2passedread p50 latency220.16 us
Disk randrw · repetition 2passedread p95 latency378.88 us
Disk randrw · repetition 2passedread p99 latency509.952 us
Disk randrw · repetition 2passedwrite bandwidth184.523 MB/s
Disk randrw · repetition 2passedwrite operations45,049.565 IOPS
Disk randrw · repetition 2passedwrite p50 latency132.096 us
Disk randrw · repetition 2passedwrite p95 latency264.192 us
Disk randrw · repetition 2passedwrite p99 latency411.648 us
Disk write · repetition 3passedwrite bandwidth3,096.743 MB/s
Disk write · repetition 3passedwrite operations2,953.284 IOPS
Disk write · repetition 3passedwrite p50 latency10,813.44 us
Disk write · repetition 3passedwrite p95 latency11,599.872 us
Disk write · repetition 3passedwrite p99 latency12,648.448 us
Disk read · repetition 3passedread bandwidth3,455.38 MB/s
Disk read · repetition 3passedread operations3,295.308 IOPS
Disk read · repetition 3passedread p50 latency9,633.792 us
Disk read · repetition 3passedread p95 latency11,862.016 us
Disk read · repetition 3passedread p99 latency13,303.808 us
Disk randwrite · repetition 3passedwrite bandwidth686.608 MB/s
Disk randwrite · repetition 3passedwrite operations167,628.946 IOPS
Disk randwrite · repetition 3passedwrite p50 latency171.008 us
Disk randwrite · repetition 3passedwrite p95 latency301.056 us
Disk randwrite · repetition 3passedwrite p99 latency378.88 us
Disk randread · repetition 3passedread bandwidth625.996 MB/s
Disk randread · repetition 3passedread operations152,830.939 IOPS
Disk randread · repetition 3passedread p50 latency195.584 us
Disk randread · repetition 3passedread p95 latency325.632 us
Disk randread · repetition 3passedread p99 latency423.936 us
Disk randrw · repetition 3passedread bandwidth427.726 MB/s
Disk randrw · repetition 3passedread operations104,425.319 IOPS
Disk randrw · repetition 3passedread p50 latency222.208 us
Disk randrw · repetition 3passedread p95 latency370.688 us
Disk randrw · repetition 3passedread p99 latency489.472 us
Disk randrw · repetition 3passedwrite bandwidth183.34 MB/s
Disk randrw · repetition 3passedwrite operations44,760.775 IOPS
Disk randrw · repetition 3passedwrite p50 latency134.144 us
Disk randrw · repetition 3passedwrite p95 latency264.192 us
Disk randrw · repetition 3passedwrite p99 latency399.36 us

Network performance

Workload / repetitionOutcomeMetricValue
Network upload endpoint 1 · repetition 1passedSender throughput100.157 Mbit/s
Network upload endpoint 1 · repetition 1passedReceiver throughput97.341 Mbit/s
Network download endpoint 1 · repetition 1passedSender throughput92.289 Mbit/s
Network download endpoint 1 · repetition 1passedReceiver throughput91.04 Mbit/s
Latency endpoint 1 · repetition 1passedRound-trip mean142.568 ms
Network upload endpoint 2 · repetition 1passedSender throughput100.157 Mbit/s
Network upload endpoint 2 · repetition 1passedReceiver throughput95.639 Mbit/s
Network download endpoint 2 · repetition 1passedSender throughput100.085 Mbit/s
Network download endpoint 2 · repetition 1passedReceiver throughput99.945 Mbit/s
Latency endpoint 2 · repetition 1passedRound-trip mean253.147 ms

PostgreSQL performance

Workload / repetitionOutcomeMetricValue
PostgreSQL memory dataset · repetition 1passedTransactions4,007.159 transactions/s
PostgreSQL memory dataset · repetition 1passedAverage latency0.997 ms
PostgreSQL memory dataset · repetition 2passedTransactions3,852.526 transactions/s
PostgreSQL memory dataset · repetition 2passedAverage latency1.036 ms
PostgreSQL memory dataset · repetition 3passedTransactions3,767.114 transactions/s
PostgreSQL memory dataset · repetition 3passedAverage latency1.06 ms
PostgreSQL storage dataset · repetition 1passedTransactions3,241.451 transactions/s
PostgreSQL storage dataset · repetition 1passedAverage latency1.233 ms
PostgreSQL storage dataset · repetition 2passedTransactions3,289.494 transactions/s
PostgreSQL storage dataset · repetition 2passedAverage latency1.215 ms
PostgreSQL storage dataset · repetition 3passedTransactions3,222.461 transactions/s
PostgreSQL storage dataset · repetition 3passedAverage latency1.24 ms

Consistency over time

Workload / repetitionOutcomeMetricValue
24-hour consistency · repetition 1skippedNo measured scoreNot measured

One deployment during its recorded test window. Raw intake logs remain private; the JSON download contains the reviewed, sanitized snapshot.

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