AI-assisted review
Instance benchmarkDigitalOcean c-4
The complete benchmark report. Every workload, in one place.
4 vCPU7.8 GiB RAMx86_64London, UK
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.
433.9events/s
Single thread
Single thread
1,375events/s
All 4 vCPUs
All 4 vCPUs
- 1 thread433.9
- 4 threads1,375
Median of 3 passed runs of about 30 seconds per thread count.
gzip fixed corpus · compression input throughput 207.2 MiB/s · single run.
02 /
Memory bandwidth
sysbench 1.0.20 memory · sequential read and write operations.
Read7,556 MiB/s
Write8,408 MiB/s
CopyNot measured
- Read7,556
- Write8,408
- CopyNot 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 | 8,838 MB/s | 5,145 µs |
| Sequential write | 1,720 MB/s | 32,899 µs |
| Random read | 118,756 IOPS | 399.4 µs |
| Random write | 101,210 IOPS | 497.7 µs |
| Random mix · read | 73,389 IOPS | 493.6 µs |
| Random mix · write | 31,470 IOPS | 436.2 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 · two controlled London endpoints.
| Destination | Download | Upload | RTT | Jitter | Loss |
|---|---|---|---|---|---|
| London endpoint 1 | 100.1 Mbit/s | 100.1 Mbit/s | 0.60 ms | — | — |
| London endpoint 2 | 100.1 Mbit/s | 100.1 Mbit/s | 3.42 ms | — | — |
Results describe these measured paths at a 100 Mbit/s rate setting, not maximum link capacity. RTT is the probe mean; jitter and packet loss were not measured.
05 /
PostgreSQL performance
PostgreSQL 16.15 · pgbench · in-memory and storage-bound datasets.
| Dataset profile | Transactions / sec | Average latency | Passed runs |
|---|---|---|---|
| In memory | 4,054 | 0.98 ms | 3 of 3 passed |
| Storage-bound | 3,406 | 1.17 ms | 3 of 3 passed |
Median of 3 passed runs of about 30 seconds per dataset. Latency percentiles were not measured.
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 22 min test window, so no time series exists and none is drawn.
| Repetition | CPU 1 thread | Memory read | Random read | PostgreSQL |
|---|---|---|---|---|
| 1 | 433.9 events/s | 7,547 MiB/s | 118,756 IOPS | 4,054 tx/s |
| 2 | 430.3 events/s | 7,556 MiB/s | 118,816 IOPS | 4,034 tx/s |
| 3 | 434.6 events/s | 7,583 MiB/s | 117,966 IOPS | 4,077 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
Window22 min
report.json
Read the full methodologyReviewed, sanitized snapshot: every run, the environment record and all limitations. Raw intake logs remain private.
One deployment describes this report, not every server a provider operates.
A 22 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 |
| CPU | Intel(R) Xeon(R) Platinum 8280 CPU @ 2.70GHz |
| 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 | 6343f908ae4f28eb98c261e9c277ed8d7bccaa18952b055d068e1da42f499ab9 |
| Started | 2026-10-17T12:32:04.554Z |
| Finished | 2026-10-17T12:54:06.971Z |
| 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 | 433.9 events/s |
| CPU 4 thread(s) · repetition 1 | passed | Events per second | 1,375 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 430.3 events/s |
| CPU 4 thread(s) · repetition 2 | passed | Events per second | 1,387 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 434.6 events/s |
| CPU 4 thread(s) · repetition 3 | passed | Events per second | 1,345 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 207.2 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 7,547 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 8,408 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 7,556 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 8,382 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 7,583 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 8,419 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 1,745 MB/s |
| Disk write · repetition 1 | passed | write operations | 1,665 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 17,695 µs |
| Disk write · repetition 1 | passed | write p95 latency | 31,850 µs |
| Disk write · repetition 1 | passed | write p99 latency | 41,157 µs |
| Disk read · repetition 1 | passed | read bandwidth | 8,838 MB/s |
| Disk read · repetition 1 | passed | read operations | 8,428 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 3,555 µs |
| Disk read · repetition 1 | passed | read p95 latency | 5,145 µs |
| Disk read · repetition 1 | passed | read p99 latency | 10,813 µs |
| Disk randwrite · repetition 1 | passed | write bandwidth | 421.8 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 102,976 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 297.0 µs |
| Disk randwrite · repetition 1 | passed | write p95 latency | 489.5 µs |
| Disk randwrite · repetition 1 | passed | write p99 latency | 626.7 µs |
| Disk randread · repetition 1 | passed | read bandwidth | 486.4 MB/s |
| Disk randread · repetition 1 | passed | read operations | 118,756 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 248.8 µs |
| Disk randread · repetition 1 | passed | read p95 latency | 399.4 µs |
| Disk randread · repetition 1 | passed | read p99 latency | 473.1 µs |
| Disk randrw · repetition 1 | passed | read bandwidth | 307.2 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 75,011 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 292.9 µs |
| Disk randrw · repetition 1 | passed | read p95 latency | 477.2 µs |
| Disk randrw · repetition 1 | passed | read p99 latency | 577.5 µs |
| Disk randrw · repetition 1 | passed | write bandwidth | 131.8 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 32,174 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 240.6 µs |
| Disk randrw · repetition 1 | passed | write p95 latency | 419.8 µs |
| Disk randrw · repetition 1 | passed | write p99 latency | 569.3 µs |
| Disk write · repetition 2 | passed | write bandwidth | 1,633 MB/s |
| Disk write · repetition 2 | passed | write operations | 1,557 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 18,219 µs |
| Disk write · repetition 2 | passed | write p95 latency | 36,962 µs |
| Disk write · repetition 2 | passed | write p99 latency | 51,642 µs |
| Disk read · repetition 2 | passed | read bandwidth | 9,236 MB/s |
| Disk read · repetition 2 | passed | read operations | 8,808 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 3,490 µs |
| Disk read · repetition 2 | passed | read p95 latency | 4,817 µs |
| Disk read · repetition 2 | passed | read p99 latency | 8,978 µs |
| Disk randwrite · repetition 2 | passed | write bandwidth | 411.4 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 100,449 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 301.1 µs |
| Disk randwrite · repetition 2 | passed | write p95 latency | 510.0 µs |
| Disk randwrite · repetition 2 | passed | write p99 latency | 643.1 µs |
| Disk randread · repetition 2 | passed | read bandwidth | 486.7 MB/s |
| Disk randread · repetition 2 | passed | read operations | 118,816 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 248.8 µs |
| Disk randread · repetition 2 | passed | read p95 latency | 395.3 µs |
| Disk randread · repetition 2 | passed | read p99 latency | 469.0 µs |
| Disk randrw · repetition 2 | passed | read bandwidth | 300.6 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 73,389 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 297.0 µs |
| Disk randrw · repetition 2 | passed | read p95 latency | 493.6 µs |
| Disk randrw · repetition 2 | passed | read p99 latency | 593.9 µs |
| Disk randrw · repetition 2 | passed | write bandwidth | 128.9 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 31,470 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 244.7 µs |
| Disk randrw · repetition 2 | passed | write p95 latency | 436.2 µs |
| Disk randrw · repetition 2 | passed | write p99 latency | 593.9 µs |
| Disk write · repetition 3 | passed | write bandwidth | 1,720 MB/s |
| Disk write · repetition 3 | passed | write operations | 1,641 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 17,957 µs |
| Disk write · repetition 3 | passed | write p95 latency | 32,899 µs |
| Disk write · repetition 3 | passed | write p99 latency | 43,254 µs |
| Disk read · repetition 3 | passed | read bandwidth | 8,681 MB/s |
| Disk read · repetition 3 | passed | read operations | 8,279 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 3,654 µs |
| Disk read · repetition 3 | passed | read p95 latency | 5,603 µs |
| Disk read · repetition 3 | passed | read p99 latency | 9,372 µs |
| Disk randwrite · repetition 3 | passed | write bandwidth | 414.6 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 101,210 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 297.0 µs |
| Disk randwrite · repetition 3 | passed | write p95 latency | 497.7 µs |
| Disk randwrite · repetition 3 | passed | write p99 latency | 634.9 µs |
| Disk randread · repetition 3 | passed | read bandwidth | 483.2 MB/s |
| Disk randread · repetition 3 | passed | read operations | 117,966 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 252.9 µs |
| Disk randread · repetition 3 | passed | read p95 latency | 399.4 µs |
| Disk randread · repetition 3 | passed | read p99 latency | 473.1 µs |
| Disk randrw · repetition 3 | passed | read bandwidth | 297.6 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 72,665 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 301.1 µs |
| Disk randrw · repetition 3 | passed | read p95 latency | 501.8 µs |
| Disk randrw · repetition 3 | passed | read p99 latency | 602.1 µs |
| Disk randrw · repetition 3 | passed | write bandwidth | 127.6 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 31,153 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 246.8 µs |
| Disk randrw · repetition 3 | passed | write p95 latency | 448.5 µs |
| Disk randrw · repetition 3 | passed | write p99 latency | 618.5 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 | 0.60 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 | 3.42 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 4,054 tx/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 0.98 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 4,034 tx/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 0.99 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 4,077 tx/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 0.98 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 3,434 tx/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 1.16 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 3,406 tx/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 1.17 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 3,403 tx/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 1.17 ms |
Consistency over time
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| 24-hour consistency · repetition 1 | skipped | No measured score | Not measured |