AI-assisted review
Instance benchmarkDigitalOcean c-4
The complete benchmark report. Every workload, in one place.
4 vCPU7.8 GiB RAMx86_64San Francisco, US$84.00 / month
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.
442.0events/s
Single thread
Single thread
1,376events/s
All 4 vCPUs
All 4 vCPUs
- 1 thread442.0
- 4 threads1,376
Median of 3 passed runs of about 30 seconds per thread count.
gzip fixed corpus · compression input throughput 206.7 MiB/s · single run.
02 /
Memory bandwidth
sysbench 1.0.20 memory · sequential read and write operations.
Read10,311 MiB/s
Write9,455 MiB/s
CopyNot measured
- Read10,311
- Write9,455
- 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 | 2,478 MB/s | 16,908 µs |
| Sequential write | 693.5 MB/s | 74,973 µs |
| Random read | 91,313 IOPS | 485.4 µs |
| Random write | 32,110 IOPS | 3,490 µs |
| Random mix · read | 39,618 IOPS | 1,516 µs |
| Random mix · write | 16,985 IOPS | 2,867 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: San Francisco, US · published internet speed observations.
No published internet speed test for this plan and region.
The original capped iperf path checks are retained as historical evidence under Evidence.
05 /
PostgreSQL performance
PostgreSQL 16.15 · pgbench · in-memory and storage-bound datasets.
| Dataset profile | Transactions / sec | Average latency | Passed runs |
|---|---|---|---|
| In memory | 1,644 | 2.43 ms | 3 of 3 passed |
| Storage-bound | 1,188 | 3.36 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 22 min test window, so no time series exists and none is drawn.
| Repetition | CPU 1 thread | Memory read | Random read | PostgreSQL |
|---|---|---|---|---|
| 1 | 429.4 events/s | 10,311 MiB/s | 88,465 IOPS | 1,751 tx/s |
| 2 | 443.6 events/s | 10,296 MiB/s | 91,313 IOPS | 1,644 tx/s |
| 3 | 442.0 events/s | 10,371 MiB/s | 91,410 IOPS | 1,624 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 | San Francisco, US (sfo2) · 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 8168 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 | babf71ff6150558f5f5fbca258c3008c9ab5b36c4a679b4fa436b808258d96be |
| Started | 2026-10-17T12:35:38.099Z |
| Finished | 2026-10-17T12:57:31.262Z |
| 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 | 97.3 Mbit/s | 141.8 ms | — | — |
| London endpoint 2 | 100.0 Mbit/s | 97.5 Mbit/s | 136.9 ms | — | — |
Every measured repetition and outcome
CPU performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| CPU 1 thread(s) · repetition 1 | passed | Events per second | 429.4 events/s |
| CPU 4 thread(s) · repetition 1 | passed | Events per second | 1,360 events/s |
| CPU 1 thread(s) · repetition 2 | passed | Events per second | 443.6 events/s |
| CPU 4 thread(s) · repetition 2 | passed | Events per second | 1,376 events/s |
| CPU 1 thread(s) · repetition 3 | passed | Events per second | 442.0 events/s |
| CPU 4 thread(s) · repetition 3 | passed | Events per second | 1,384 events/s |
| gzip fixed corpus · repetition 1 | passed | Compression input throughput | 206.7 MiB/s |
Memory bandwidth
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Memory read · repetition 1 | passed | Bandwidth | 10,311 MiB/s |
| Memory write · repetition 1 | passed | Bandwidth | 9,410 MiB/s |
| Memory read · repetition 2 | passed | Bandwidth | 10,296 MiB/s |
| Memory write · repetition 2 | passed | Bandwidth | 9,455 MiB/s |
| Memory read · repetition 3 | passed | Bandwidth | 10,371 MiB/s |
| Memory write · repetition 3 | passed | Bandwidth | 9,461 MiB/s |
Disk performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| Disk write · repetition 1 | passed | write bandwidth | 684.3 MB/s |
| Disk write · repetition 1 | passed | write operations | 652.6 IOPS |
| Disk write · repetition 1 | passed | write p50 latency | 44,827 µs |
| Disk write · repetition 1 | passed | write p95 latency | 83,362 µs |
| Disk write · repetition 1 | passed | write p99 latency | 116,916 µs |
| Disk read · repetition 1 | passed | read bandwidth | 2,148 MB/s |
| Disk read · repetition 1 | passed | read operations | 2,049 IOPS |
| Disk read · repetition 1 | passed | read p50 latency | 13,828 µs |
| Disk read · repetition 1 | passed | read p95 latency | 31,588 µs |
| Disk read · repetition 1 | passed | read p99 latency | 43,778 µs |
| Disk randwrite · repetition 1 | passed | write bandwidth | 131.5 MB/s |
| Disk randwrite · repetition 1 | passed | write operations | 32,110 IOPS |
| Disk randwrite · repetition 1 | passed | write p50 latency | 577.5 µs |
| Disk randwrite · repetition 1 | passed | write p95 latency | 3,490 µs |
| Disk randwrite · repetition 1 | passed | write p99 latency | 4,293 µs |
| Disk randread · repetition 1 | passed | read bandwidth | 362.4 MB/s |
| Disk randread · repetition 1 | passed | read operations | 88,465 IOPS |
| Disk randread · repetition 1 | passed | read p50 latency | 329.7 µs |
| Disk randread · repetition 1 | passed | read p95 latency | 505.9 µs |
| Disk randread · repetition 1 | passed | read p99 latency | 856.1 µs |
| Disk randrw · repetition 1 | passed | read bandwidth | 162.3 MB/s |
| Disk randrw · repetition 1 | passed | read operations | 39,618 IOPS |
| Disk randrw · repetition 1 | passed | read p50 latency | 325.6 µs |
| Disk randrw · repetition 1 | passed | read p95 latency | 1,532 µs |
| Disk randrw · repetition 1 | passed | read p99 latency | 3,523 µs |
| Disk randrw · repetition 1 | passed | write bandwidth | 69.6 MB/s |
| Disk randrw · repetition 1 | passed | write operations | 16,985 IOPS |
| Disk randrw · repetition 1 | passed | write p50 latency | 485.4 µs |
| Disk randrw · repetition 1 | passed | write p95 latency | 2,900 µs |
| Disk randrw · repetition 1 | passed | write p99 latency | 4,145 µs |
| Disk write · repetition 2 | passed | write bandwidth | 709.7 MB/s |
| Disk write · repetition 2 | passed | write operations | 676.8 IOPS |
| Disk write · repetition 2 | passed | write p50 latency | 43,254 µs |
| Disk write · repetition 2 | passed | write p95 latency | 73,925 µs |
| Disk write · repetition 2 | passed | write p99 latency | 110,625 µs |
| Disk read · repetition 2 | passed | read bandwidth | 2,502 MB/s |
| Disk read · repetition 2 | passed | read operations | 2,386 IOPS |
| Disk read · repetition 2 | passed | read p50 latency | 13,173 µs |
| Disk read · repetition 2 | passed | read p95 latency | 16,908 µs |
| Disk read · repetition 2 | passed | read p99 latency | 20,054 µs |
| Disk randwrite · repetition 2 | passed | write bandwidth | 132.2 MB/s |
| Disk randwrite · repetition 2 | passed | write operations | 32,269 IOPS |
| Disk randwrite · repetition 2 | passed | write p50 latency | 569.3 µs |
| Disk randwrite · repetition 2 | passed | write p95 latency | 3,490 µs |
| Disk randwrite · repetition 2 | passed | write p99 latency | 4,293 µs |
| Disk randread · repetition 2 | passed | read bandwidth | 374.0 MB/s |
| Disk randread · repetition 2 | passed | read operations | 91,313 IOPS |
| Disk randread · repetition 2 | passed | read p50 latency | 329.7 µs |
| Disk randread · repetition 2 | passed | read p95 latency | 485.4 µs |
| Disk randread · repetition 2 | passed | read p99 latency | 675.8 µs |
| Disk randrw · repetition 2 | passed | read bandwidth | 164.8 MB/s |
| Disk randrw · repetition 2 | passed | read operations | 40,244 IOPS |
| Disk randrw · repetition 2 | passed | read p50 latency | 325.6 µs |
| Disk randrw · repetition 2 | passed | read p95 latency | 1,483 µs |
| Disk randrw · repetition 2 | passed | read p99 latency | 3,523 µs |
| Disk randrw · repetition 2 | passed | write bandwidth | 70.7 MB/s |
| Disk randrw · repetition 2 | passed | write operations | 17,253 IOPS |
| Disk randrw · repetition 2 | passed | write p50 latency | 485.4 µs |
| Disk randrw · repetition 2 | passed | write p95 latency | 2,834 µs |
| Disk randrw · repetition 2 | passed | write p99 latency | 4,080 µs |
| Disk write · repetition 3 | passed | write bandwidth | 693.5 MB/s |
| Disk write · repetition 3 | passed | write operations | 661.4 IOPS |
| Disk write · repetition 3 | passed | write p50 latency | 44,827 µs |
| Disk write · repetition 3 | passed | write p95 latency | 74,973 µs |
| Disk write · repetition 3 | passed | write p99 latency | 115,868 µs |
| Disk read · repetition 3 | passed | read bandwidth | 2,478 MB/s |
| Disk read · repetition 3 | passed | read operations | 2,364 IOPS |
| Disk read · repetition 3 | passed | read p50 latency | 13,304 µs |
| Disk read · repetition 3 | passed | read p95 latency | 16,908 µs |
| Disk read · repetition 3 | passed | read p99 latency | 20,840 µs |
| Disk randwrite · repetition 3 | passed | write bandwidth | 131.2 MB/s |
| Disk randwrite · repetition 3 | passed | write operations | 32,024 IOPS |
| Disk randwrite · repetition 3 | passed | write p50 latency | 577.5 µs |
| Disk randwrite · repetition 3 | passed | write p95 latency | 3,490 µs |
| Disk randwrite · repetition 3 | passed | write p99 latency | 4,293 µs |
| Disk randread · repetition 3 | passed | read bandwidth | 374.4 MB/s |
| Disk randread · repetition 3 | passed | read operations | 91,410 IOPS |
| Disk randread · repetition 3 | passed | read p50 latency | 325.6 µs |
| Disk randread · repetition 3 | passed | read p95 latency | 485.4 µs |
| Disk randread · repetition 3 | passed | read p99 latency | 675.8 µs |
| Disk randrw · repetition 3 | passed | read bandwidth | 161.0 MB/s |
| Disk randrw · repetition 3 | passed | read operations | 39,304 IOPS |
| Disk randrw · repetition 3 | passed | read p50 latency | 321.5 µs |
| Disk randrw · repetition 3 | passed | read p95 latency | 1,516 µs |
| Disk randrw · repetition 3 | passed | read p99 latency | 3,555 µs |
| Disk randrw · repetition 3 | passed | write bandwidth | 69.0 MB/s |
| Disk randrw · repetition 3 | passed | write operations | 16,854 IOPS |
| Disk randrw · repetition 3 | passed | write p50 latency | 485.4 µs |
| Disk randrw · repetition 3 | passed | write p95 latency | 2,867 µs |
| Disk randrw · repetition 3 | passed | write p99 latency | 4,145 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 | 97.3 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Sender throughput | 100.0 Mbit/s |
| Network download endpoint 1 · repetition 1 | passed | Receiver throughput | 100.1 Mbit/s |
| Latency endpoint 1 · repetition 1 | passed | Round-trip mean | 141.8 ms |
| Network upload endpoint 2 · repetition 1 | passed | Sender throughput | 100.2 Mbit/s |
| Network upload endpoint 2 · repetition 1 | passed | Receiver throughput | 97.5 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Sender throughput | 100.1 Mbit/s |
| Network download endpoint 2 · repetition 1 | passed | Receiver throughput | 100.0 Mbit/s |
| Latency endpoint 2 · repetition 1 | passed | Round-trip mean | 136.9 ms |
PostgreSQL performance
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| PostgreSQL memory dataset · repetition 1 | passed | Transactions | 1,751 tx/s |
| PostgreSQL memory dataset · repetition 1 | passed | Average latency | 2.28 ms |
| PostgreSQL memory dataset · repetition 2 | passed | Transactions | 1,644 tx/s |
| PostgreSQL memory dataset · repetition 2 | passed | Average latency | 2.43 ms |
| PostgreSQL memory dataset · repetition 3 | passed | Transactions | 1,624 tx/s |
| PostgreSQL memory dataset · repetition 3 | passed | Average latency | 2.46 ms |
| PostgreSQL storage dataset · repetition 1 | passed | Transactions | 1,338 tx/s |
| PostgreSQL storage dataset · repetition 1 | passed | Average latency | 2.99 ms |
| PostgreSQL storage dataset · repetition 2 | passed | Transactions | 1,149 tx/s |
| PostgreSQL storage dataset · repetition 2 | passed | Average latency | 3.48 ms |
| PostgreSQL storage dataset · repetition 3 | passed | Transactions | 1,188 tx/s |
| PostgreSQL storage dataset · repetition 3 | passed | Average latency | 3.36 ms |
Consistency over time
| Workload / repetition | Outcome | Metric | Value |
|---|---|---|---|
| 24-hour consistency · repetition 1 | skipped | No measured score | Not measured |