AI-assisted review
Instance benchmark

Vultr vc2-4c-8gb

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

4 vCPU7.7 GiB RAMx86_64London, UK$40.00 / month
Published report · 17 Oct 2026 · One deployment · 43 min test windowUbuntu 24.04.5 · Region LHR · Method pilot-1

All values below are medians of passed runs unless stated otherwise.

01 /

CPU performance

sysbench 1.0.20 prime workload · 1 thread and all 4 vCPUs.

421.1events/s
Single thread
1,634events/s
All 4 vCPUs
Events / sec
  • 1 thread
    421.1
  • 4 threads
    1,634

Median of 3 passed runs of about 30 seconds per thread count.

gzip fixed corpus · compression input throughput 181.0 MiB/s · single run.

02 /

Memory bandwidth

sysbench 1.0.20 memory · sequential read and write operations.

Read8,586 MiB/s
Write8,358 MiB/s
CopyNot measured
Throughput (MiB/s)
  • Read
    8,586
  • Write
    8,358
  • Copy
    Not measured

Median of 3 passed runs of about 30 seconds per operation. The copy workload is deferred in this methodology.

03 /

Disk performance

fio 3.36 · direct I/O · sequential, random and mixed jobs measured separately.

WorkloadThroughputp95 latency
Sequential read552.8 MB/s71,827 µs
Sequential write507.5 MB/s80,216 µs
Random read90,080 IOPS440.3 µs
Random write49,710 IOPS872.4 µs
Random mix · read46,311 IOPS1,434 µs
Random mix · write19,867 IOPS536.6 µs

Median of 3 passed runs of about 30 seconds per job. The mixed job's reads and writes are listed separately.

04 /

Network performance

Source: London, UK · LibreSpeed CLI 1.0.14 · public HTTPS destinations.

DestinationDownloadUploadHTTP latencyHTTP jitterLoss
Frankfurt, Germany (Clouvider)
17/10/2026, 17:11:06 UTC · Separate VM network-only run · View reviewed run
2,513 Mbit/s1,033 Mbit/s12.5 ms0.07 msNot measured
New York, United States (2) (Clouvider)
17/10/2026, 17:11:06 UTC · Separate VM network-only run · View reviewed run
1,149 Mbit/s227.1 Mbit/s71.9 ms0.09 msNot measured

One 10-second download and upload per destination, three concurrent streams, IPv4 over HTTPS, with no configured rate limit. HTTP latency and jitter are application-level measurements; packet loss was not measured. These paths do not establish maximum link capacity.

Latest matching published internet speed test for this provider, plan, recorded region and resource class, taken on a separate VM. These values are not measurements from this full benchmark deployment. The original capped iperf path checks remain under Evidence; their values and test window are unchanged.

Browse all network speed tests.

12 GiB outbound-interface abort threshold is sampled; kernel buffering and sampling may overshoot. Retained counters disclose actual observed bytes.

05 /

PostgreSQL performance

PostgreSQL 16.15 · pgbench · in-memory and storage-bound datasets.

Dataset profileTransactions / secAverage latencyPassed runs
In memory3,4311.16 ms3 of 3 passed
Storage-bound2,7121.47 ms3 of 3 passed

Median of 3 passed runs of about 30 seconds per dataset. Latency percentiles were not measured.

Running PostgreSQL yourself? Read our PostgreSQL tutorials.

06 /

Consistency across runs

One deployment · repeated runs inside the recorded test window.

24-hour consistencyNot measured

Workload skipped · No measured score. This report covers a 43 min test window, so no time series exists and none is drawn.

RepetitionCPU 1 threadMemory readRandom readPostgreSQL
1416.9 events/s8,586 MiB/s84,677 IOPS3,431 tx/s
2421.1 events/s8,451 MiB/s92,058 IOPS3,435 tx/s
3428.0 events/s8,694 MiB/s90,080 IOPS3,368 tx/s

Individual runs, not medians. PostgreSQL uses the in-memory dataset. Spread within one test window does not establish long-term consistency.

07 /

Inspect the evidence.

Recorded environment, reviewed measurements and the published snapshot.

OSUbuntu 24.04.5 LTS
Architecturex86_64
Methodpilot-1
Deployments1
Window43 min
report.json

Reviewed, sanitized snapshot: every run, the environment record and all limitations. Raw intake logs remain private.

Read the full methodology

One deployment describes this report, not every server a provider operates.

A 43 min test window does not establish 24-hour consistency or long-term reliability.

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
RegionLondon, UK (LHR) · detected
Planvc2-4c-8gb · supplied
List price$40.00 / month · $0.055 / hour. List price on 17 Oct 2026, USD before tax. Source: Vultr plan catalog (API).
CPUIntel Xeon Processor (Skylake, IBRS)
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 hash02cc433ad56706c6dabc7d4e5574432106311860841b52d5650a23f28c636338
Started2026-10-17T11:42:15.911Z
Finished2026-10-17T12:25:08.765Z
Execution statuscompleted
Historical capped network path checks

Original full benchmark deployment · 17 Oct 2026. These controlled iperf path checks used a 100 Mbit/s rate setting and do not measure internet speed or maximum link capacity. RTT is the probe mean; jitter and packet loss were not measured. The original report JSON retains these measurements.

Controlled destinationDownloadUploadRTTJitterLoss
London endpoint 1100.1 Mbit/s100.1 Mbit/s2.46 ms——
London endpoint 2100.1 Mbit/s100.1 Mbit/s0.38 ms——
Every measured repetition and outcome

CPU performance

Workload / repetitionOutcomeMetricValue
CPU 1 thread(s) · repetition 1passedEvents per second416.9 events/s
CPU 4 thread(s) · repetition 1passedEvents per second1,655 events/s
CPU 1 thread(s) · repetition 2passedEvents per second421.1 events/s
CPU 4 thread(s) · repetition 2passedEvents per second1,634 events/s
CPU 1 thread(s) · repetition 3passedEvents per second428.0 events/s
CPU 4 thread(s) · repetition 3passedEvents per second1,597 events/s
gzip fixed corpus · repetition 1passedCompression input throughput181.0 MiB/s

Memory bandwidth

Workload / repetitionOutcomeMetricValue
Memory read · repetition 1passedBandwidth8,586 MiB/s
Memory write · repetition 1passedBandwidth8,314 MiB/s
Memory read · repetition 2passedBandwidth8,451 MiB/s
Memory write · repetition 2passedBandwidth8,358 MiB/s
Memory read · repetition 3passedBandwidth8,694 MiB/s
Memory write · repetition 3passedBandwidth8,492 MiB/s

Disk performance

Workload / repetitionOutcomeMetricValue
Disk write · repetition 1passedwrite bandwidth493.5 MB/s
Disk write · repetition 1passedwrite operations470.6 IOPS
Disk write · repetition 1passedwrite p50 latency63,701 µs
Disk write · repetition 1passedwrite p95 latency89,653 µs
Disk write · repetition 1passedwrite p99 latency149,946 µs
Disk read · repetition 1passedread bandwidth517.1 MB/s
Disk read · repetition 1passedread operations493.2 IOPS
Disk read · repetition 1passedread p50 latency60,555 µs
Disk read · repetition 1passedread p95 latency87,556 µs
Disk read · repetition 1passedread p99 latency98,042 µs
Disk randwrite · repetition 1passedwrite bandwidth203.7 MB/s
Disk randwrite · repetition 1passedwrite operations49,720 IOPS
Disk randwrite · repetition 1passedwrite p50 latency387.1 µs
Disk randwrite · repetition 1passedwrite p95 latency823.3 µs
Disk randwrite · repetition 1passedwrite p99 latency10,158 µs
Disk randread · repetition 1passedread bandwidth346.8 MB/s
Disk randread · repetition 1passedread operations84,677 IOPS
Disk randread · repetition 1passedread p50 latency337.9 µs
Disk randread · repetition 1passedread p95 latency456.7 µs
Disk randread · repetition 1passedread p99 latency610.3 µs
Disk randrw · repetition 1passedread bandwidth189.7 MB/s
Disk randrw · repetition 1passedread operations46,311 IOPS
Disk randrw · repetition 1passedread p50 latency383.0 µs
Disk randrw · repetition 1passedread p95 latency1,434 µs
Disk randrw · repetition 1passedread p99 latency2,114 µs
Disk randrw · repetition 1passedwrite bandwidth81.4 MB/s
Disk randrw · repetition 1passedwrite operations19,867 IOPS
Disk randrw · repetition 1passedwrite p50 latency301.1 µs
Disk randrw · repetition 1passedwrite p95 latency536.6 µs
Disk randrw · repetition 1passedwrite p99 latency1,139 µs
Disk write · repetition 2passedwrite bandwidth507.5 MB/s
Disk write · repetition 2passedwrite operations484.0 IOPS
Disk write · repetition 2passedwrite p50 latency62,128 µs
Disk write · repetition 2passedwrite p95 latency80,216 µs
Disk write · repetition 2passedwrite p99 latency154,141 µs
Disk read · repetition 2passedread bandwidth553.8 MB/s
Disk read · repetition 2passedread operations528.2 IOPS
Disk read · repetition 2passedread p50 latency60,031 µs
Disk read · repetition 2passedread p95 latency71,827 µs
Disk read · repetition 2passedread p99 latency85,459 µs
Disk randwrite · repetition 2passedwrite bandwidth199.8 MB/s
Disk randwrite · repetition 2passedwrite operations48,783 IOPS
Disk randwrite · repetition 2passedwrite p50 latency395.3 µs
Disk randwrite · repetition 2passedwrite p95 latency880.6 µs
Disk randwrite · repetition 2passedwrite p99 latency10,945 µs
Disk randread · repetition 2passedread bandwidth377.1 MB/s
Disk randread · repetition 2passedread operations92,058 IOPS
Disk randread · repetition 2passedread p50 latency337.9 µs
Disk randread · repetition 2passedread p95 latency423.9 µs
Disk randread · repetition 2passedread p99 latency522.2 µs
Disk randrw · repetition 2passedread bandwidth189.6 MB/s
Disk randrw · repetition 2passedread operations46,285 IOPS
Disk randrw · repetition 2passedread p50 latency391.2 µs
Disk randrw · repetition 2passedread p95 latency1,450 µs
Disk randrw · repetition 2passedread p99 latency2,114 µs
Disk randrw · repetition 2passedwrite bandwidth81.3 MB/s
Disk randrw · repetition 2passedwrite operations19,856 IOPS
Disk randrw · repetition 2passedwrite p50 latency309.2 µs
Disk randrw · repetition 2passedwrite p95 latency569.3 µs
Disk randrw · repetition 2passedwrite p99 latency1,581 µs
Disk write · repetition 3passedwrite bandwidth509.3 MB/s
Disk write · repetition 3passedwrite operations485.7 IOPS
Disk write · repetition 3passedwrite p50 latency62,128 µs
Disk write · repetition 3passedwrite p95 latency80,216 µs
Disk write · repetition 3passedwrite p99 latency135,266 µs
Disk read · repetition 3passedread bandwidth552.8 MB/s
Disk read · repetition 3passedread operations527.2 IOPS
Disk read · repetition 3passedread p50 latency60,031 µs
Disk read · repetition 3passedread p95 latency70,779 µs
Disk read · repetition 3passedread p99 latency81,265 µs
Disk randwrite · repetition 3passedwrite bandwidth203.6 MB/s
Disk randwrite · repetition 3passedwrite operations49,710 IOPS
Disk randwrite · repetition 3passedwrite p50 latency387.1 µs
Disk randwrite · repetition 3passedwrite p95 latency872.4 µs
Disk randwrite · repetition 3passedwrite p99 latency10,813 µs
Disk randread · repetition 3passedread bandwidth369.0 MB/s
Disk randread · repetition 3passedread operations90,080 IOPS
Disk randread · repetition 3passedread p50 latency342.0 µs
Disk randread · repetition 3passedread p95 latency440.3 µs
Disk randread · repetition 3passedread p99 latency553.0 µs
Disk randrw · repetition 3passedread bandwidth194.2 MB/s
Disk randrw · repetition 3passedread operations47,413 IOPS
Disk randrw · repetition 3passedread p50 latency383.0 µs
Disk randrw · repetition 3passedread p95 latency1,434 µs
Disk randrw · repetition 3passedread p99 latency2,114 µs
Disk randrw · repetition 3passedwrite bandwidth83.3 MB/s
Disk randrw · repetition 3passedwrite operations20,329 IOPS
Disk randrw · repetition 3passedwrite p50 latency297.0 µs
Disk randrw · repetition 3passedwrite p95 latency518.1 µs
Disk randrw · repetition 3passedwrite p99 latency1,663 µs

Network performance

Workload / repetitionOutcomeMetricValue
Network upload endpoint 1 · repetition 1passedSender throughput100.2 Mbit/s
Network upload endpoint 1 · repetition 1passedReceiver throughput100.1 Mbit/s
Network download endpoint 1 · repetition 1passedSender throughput100.1 Mbit/s
Network download endpoint 1 · repetition 1passedReceiver throughput100.1 Mbit/s
Latency endpoint 1 · repetition 1passedRound-trip mean2.46 ms
Network upload endpoint 2 · repetition 1passedSender throughput100.2 Mbit/s
Network upload endpoint 2 · repetition 1passedReceiver throughput100.1 Mbit/s
Network download endpoint 2 · repetition 1passedSender throughput100.1 Mbit/s
Network download endpoint 2 · repetition 1passedReceiver throughput100.1 Mbit/s
Latency endpoint 2 · repetition 1passedRound-trip mean0.38 ms

PostgreSQL performance

Workload / repetitionOutcomeMetricValue
PostgreSQL memory dataset · repetition 1passedTransactions3,431 tx/s
PostgreSQL memory dataset · repetition 1passedAverage latency1.16 ms
PostgreSQL memory dataset · repetition 2passedTransactions3,435 tx/s
PostgreSQL memory dataset · repetition 2passedAverage latency1.16 ms
PostgreSQL memory dataset · repetition 3passedTransactions3,368 tx/s
PostgreSQL memory dataset · repetition 3passedAverage latency1.19 ms
PostgreSQL storage dataset · repetition 1passedTransactions2,730 tx/s
PostgreSQL storage dataset · repetition 1passedAverage latency1.46 ms
PostgreSQL storage dataset · repetition 2passedTransactions2,712 tx/s
PostgreSQL storage dataset · repetition 2passedAverage latency1.47 ms
PostgreSQL storage dataset · repetition 3passedTransactions2,631 tx/s
PostgreSQL storage dataset · repetition 3passedAverage latency1.52 ms

Consistency over time

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