AI-assisted review

Instance benchmark

DigitalOcean c-4

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

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4 vCPU7.8 GiB RAMx86_64London, UK$84.00 / month

Published report · 17 Oct 2026 · One deployment · 32 min test windowUbuntu 24.04.5 · Region lon1 · 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.

1,084events/s
Single thread

2,252events/s
All 4 vCPUs

Events / sec

1 thread
1,084
4 threads
2,252

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

gzip fixed corpus · compression input throughput 207.7 MiB/s · single run.

02 /

Memory bandwidth

sysbench 1.0.20 memory · sequential read and write operations.

Read11,271 MiB/s

Write9,551 MiB/s

CopyNot measured

Throughput (MiB/s)

Read
11,271
Write
9,551
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.

Workload	Throughput	p95 latency
Sequential read	13,053 MB/s	5,276 µs
Sequential write	1,877 MB/s	35,389 µs
Random read	148,126 IOPS	333.8 µs
Random write	108,149 IOPS	553.0 µs
Random mix · read	83,983 IOPS	403.5 µs
Random mix · write	36,008 IOPS	342.0 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.

Destination	Download	Upload	HTTP latency	HTTP jitter	Loss
Frankfurt, Germany (Clouvider) 17/10/2026, 18:12:52 UTC · Separate VM network-only run · View reviewed run	869.0 Mbit/s	914.6 Mbit/s	16.0 ms	0.09 ms	Not measured
New York, United States (2) (Clouvider) 17/10/2026, 18:12:52 UTC · Separate VM network-only run · View reviewed run	909.5 Mbit/s	302.2 Mbit/s	71.8 ms	0.20 ms	Not 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 profile	Transactions / sec	Average latency	Passed runs
In memory	3,756	1.06 ms	3 of 3 passed
Storage-bound	2,975	1.34 ms	3 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 32 min test window, so no time series exists and none is drawn.

Repetition	CPU 1 thread	Memory read	Random read	PostgreSQL
1	1,083 events/s	11,271 MiB/s	150,457 IOPS	3,756 tx/s
2	1,086 events/s	10,965 MiB/s	148,126 IOPS	3,763 tx/s
3	1,084 events/s	11,615 MiB/s	146,340 IOPS	3,602 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

Window32 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 32 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.

Environment and configuration

Recorded field	Value
Provider	DigitalOcean · detected
Region	London, UK (lon1) · detected
Plan	c-4 · supplied
List price	$84.00 / month · $0.125 / hour. List price on 17 Oct 2026, USD before tax. Source: DigitalOcean size catalog (API).
CPU	Intel(R) Xeon(R) Platinum 8358 CPU @ 2.60GHz
Architecture	x86_64
Kernel	6.8.0-142-generic
Virtualization	kvm
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	c3eb2e7c01f15159032aac93c308aed89ee9645289179752f5a4b9d183a6e775
Started	2026-10-17T12:20:50.114Z
Finished	2026-10-17T12:53:00.910Z
Execution status	completed

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 destination	Download	Upload	RTT	Jitter	Loss
London endpoint 1	100.1 Mbit/s	100.1 Mbit/s	1.12 ms	—	—
London endpoint 2	100.1 Mbit/s	100.1 Mbit/s	3.37 ms	—	—

Every measured repetition and outcome

CPU performance

Workload / repetition	Outcome	Metric	Value
CPU 1 thread(s) · repetition 1	passed	Events per second	1,083 events/s
CPU 4 thread(s) · repetition 1	passed	Events per second	2,249 events/s
CPU 1 thread(s) · repetition 2	passed	Events per second	1,086 events/s
CPU 4 thread(s) · repetition 2	passed	Events per second	2,252 events/s
CPU 1 thread(s) · repetition 3	passed	Events per second	1,084 events/s
CPU 4 thread(s) · repetition 3	passed	Events per second	2,261 events/s
gzip fixed corpus · repetition 1	passed	Compression input throughput	207.7 MiB/s

Memory bandwidth

Workload / repetition	Outcome	Metric	Value
Memory read · repetition 1	passed	Bandwidth	11,271 MiB/s
Memory write · repetition 1	passed	Bandwidth	9,551 MiB/s
Memory read · repetition 2	passed	Bandwidth	10,965 MiB/s
Memory write · repetition 2	passed	Bandwidth	9,492 MiB/s
Memory read · repetition 3	passed	Bandwidth	11,615 MiB/s
Memory write · repetition 3	passed	Bandwidth	9,807 MiB/s

Disk performance

Workload / repetition	Outcome	Metric	Value
Disk write · repetition 1	passed	write bandwidth	1,925 MB/s
Disk write · repetition 1	passed	write operations	1,835 IOPS
Disk write · repetition 1	passed	write p50 latency	14,746 µs
Disk write · repetition 1	passed	write p95 latency	34,341 µs
Disk write · repetition 1	passed	write p99 latency	46,399 µs
Disk read · repetition 1	passed	read bandwidth	12,724 MB/s
Disk read · repetition 1	passed	read operations	12,135 IOPS
Disk read · repetition 1	passed	read p50 latency	2,089 µs
Disk read · repetition 1	passed	read p95 latency	5,865 µs
Disk read · repetition 1	passed	read p99 latency	12,911 µs
Disk randwrite · repetition 1	passed	write bandwidth	443.0 MB/s
Disk randwrite · repetition 1	passed	write operations	108,149 IOPS
Disk randwrite · repetition 1	passed	write p50 latency	272.4 µs
Disk randwrite · repetition 1	passed	write p95 latency	536.6 µs
Disk randwrite · repetition 1	passed	write p99 latency	823.3 µs
Disk randread · repetition 1	passed	read bandwidth	616.3 MB/s
Disk randread · repetition 1	passed	read operations	150,457 IOPS
Disk randread · repetition 1	passed	read p50 latency	193.5 µs
Disk randread · repetition 1	passed	read p95 latency	329.7 µs
Disk randread · repetition 1	passed	read p99 latency	370.7 µs
Disk randrw · repetition 1	passed	read bandwidth	344.0 MB/s
Disk randrw · repetition 1	passed	read operations	83,983 IOPS
Disk randrw · repetition 1	passed	read p50 latency	261.1 µs
Disk randrw · repetition 1	passed	read p95 latency	403.5 µs
Disk randrw · repetition 1	passed	read p99 latency	593.9 µs
Disk randrw · repetition 1	passed	write bandwidth	147.5 MB/s
Disk randrw · repetition 1	passed	write operations	36,008 IOPS
Disk randrw · repetition 1	passed	write p50 latency	207.9 µs
Disk randrw · repetition 1	passed	write p95 latency	342.0 µs
Disk randrw · repetition 1	passed	write p99 latency	460.8 µs
Disk write · repetition 2	passed	write bandwidth	1,811 MB/s
Disk write · repetition 2	passed	write operations	1,727 IOPS
Disk write · repetition 2	passed	write p50 latency	15,925 µs
Disk write · repetition 2	passed	write p95 latency	35,389 µs
Disk write · repetition 2	passed	write p99 latency	50,070 µs
Disk read · repetition 2	passed	read bandwidth	16,050 MB/s
Disk read · repetition 2	passed	read operations	15,306 IOPS
Disk read · repetition 2	passed	read p50 latency	1,876 µs
Disk read · repetition 2	passed	read p95 latency	3,293 µs
Disk read · repetition 2	passed	read p99 latency	8,159 µs
Disk randwrite · repetition 2	passed	write bandwidth	451.0 MB/s
Disk randwrite · repetition 2	passed	write operations	110,109 IOPS
Disk randwrite · repetition 2	passed	write p50 latency	268.3 µs
Disk randwrite · repetition 2	passed	write p95 latency	553.0 µs
Disk randwrite · repetition 2	passed	write p99 latency	823.3 µs
Disk randread · repetition 2	passed	read bandwidth	606.7 MB/s
Disk randread · repetition 2	passed	read operations	148,126 IOPS
Disk randread · repetition 2	passed	read p50 latency	193.5 µs
Disk randread · repetition 2	passed	read p95 latency	333.8 µs
Disk randread · repetition 2	passed	read p99 latency	354.3 µs
Disk randrw · repetition 2	passed	read bandwidth	357.9 MB/s
Disk randrw · repetition 2	passed	read operations	87,377 IOPS
Disk randrw · repetition 2	passed	read p50 latency	250.9 µs
Disk randrw · repetition 2	passed	read p95 latency	395.3 µs
Disk randrw · repetition 2	passed	read p99 latency	618.5 µs
Disk randrw · repetition 2	passed	write bandwidth	153.4 MB/s
Disk randrw · repetition 2	passed	write operations	37,458 IOPS
Disk randrw · repetition 2	passed	write p50 latency	195.6 µs
Disk randrw · repetition 2	passed	write p95 latency	333.8 µs
Disk randrw · repetition 2	passed	write p99 latency	481.3 µs
Disk write · repetition 3	passed	write bandwidth	1,877 MB/s
Disk write · repetition 3	passed	write operations	1,790 IOPS
Disk write · repetition 3	passed	write p50 latency	15,139 µs
Disk write · repetition 3	passed	write p95 latency	35,389 µs
Disk write · repetition 3	passed	write p99 latency	46,924 µs
Disk read · repetition 3	passed	read bandwidth	13,053 MB/s
Disk read · repetition 3	passed	read operations	12,448 IOPS
Disk read · repetition 3	passed	read p50 latency	2,146 µs
Disk read · repetition 3	passed	read p95 latency	5,276 µs
Disk read · repetition 3	passed	read p99 latency	11,469 µs
Disk randwrite · repetition 3	passed	write bandwidth	434.8 MB/s
Disk randwrite · repetition 3	passed	write operations	106,164 IOPS
Disk randwrite · repetition 3	passed	write p50 latency	276.5 µs
Disk randwrite · repetition 3	passed	write p95 latency	561.2 µs
Disk randwrite · repetition 3	passed	write p99 latency	823.3 µs
Disk randread · repetition 3	passed	read bandwidth	599.4 MB/s
Disk randread · repetition 3	passed	read operations	146,340 IOPS
Disk randread · repetition 3	passed	read p50 latency	195.6 µs
Disk randread · repetition 3	passed	read p95 latency	333.8 µs
Disk randread · repetition 3	passed	read p99 latency	354.3 µs
Disk randrw · repetition 3	passed	read bandwidth	339.3 MB/s
Disk randrw · repetition 3	passed	read operations	82,847 IOPS
Disk randrw · repetition 3	passed	read p50 latency	264.2 µs
Disk randrw · repetition 3	passed	read p95 latency	403.5 µs
Disk randrw · repetition 3	passed	read p99 latency	643.1 µs
Disk randrw · repetition 3	passed	write bandwidth	145.5 MB/s
Disk randrw · repetition 3	passed	write operations	35,522 IOPS
Disk randrw · repetition 3	passed	write p50 latency	212.0 µs
Disk randrw · repetition 3	passed	write p95 latency	342.0 µs
Disk randrw · repetition 3	passed	write p99 latency	505.9 µs

Network performance

Workload / repetition	Outcome	Metric	Value
Network upload endpoint 1 · repetition 1	passed	Sender throughput	100.2 Mbit/s
Network upload endpoint 1 · repetition 1	passed	Receiver throughput	100.1 Mbit/s
Network download endpoint 1 · repetition 1	passed	Sender throughput	100.1 Mbit/s
Network download endpoint 1 · repetition 1	passed	Receiver throughput	100.1 Mbit/s
Latency endpoint 1 · repetition 1	passed	Round-trip mean	1.12 ms
Network upload endpoint 2 · repetition 1	passed	Sender throughput	100.2 Mbit/s
Network upload endpoint 2 · repetition 1	passed	Receiver throughput	100.1 Mbit/s
Network download endpoint 2 · repetition 1	passed	Sender throughput	100.1 Mbit/s
Network download endpoint 2 · repetition 1	passed	Receiver throughput	100.1 Mbit/s
Latency endpoint 2 · repetition 1	passed	Round-trip mean	3.37 ms

PostgreSQL performance

Workload / repetition	Outcome	Metric	Value
PostgreSQL memory dataset · repetition 1	passed	Transactions	3,756 tx/s
PostgreSQL memory dataset · repetition 1	passed	Average latency	1.06 ms
PostgreSQL memory dataset · repetition 2	passed	Transactions	3,763 tx/s
PostgreSQL memory dataset · repetition 2	passed	Average latency	1.06 ms
PostgreSQL memory dataset · repetition 3	passed	Transactions	3,602 tx/s
PostgreSQL memory dataset · repetition 3	passed	Average latency	1.11 ms
PostgreSQL storage dataset · repetition 1	passed	Transactions	2,975 tx/s
PostgreSQL storage dataset · repetition 1	passed	Average latency	1.34 ms
PostgreSQL storage dataset · repetition 2	passed	Transactions	3,031 tx/s
PostgreSQL storage dataset · repetition 2	passed	Average latency	1.32 ms
PostgreSQL storage dataset · repetition 3	passed	Transactions	2,790 tx/s
PostgreSQL storage dataset · repetition 3	passed	Average latency	1.43 ms

Consistency over time

Workload / repetition	Outcome	Metric	Value
24-hour consistency · repetition 1	skipped	No measured score	Not measured