Private Network Test 30

2026-09-29 - 83,333.33 TPS (peak slot)

Explorer DAG view of the test window: epoch 10836, slots 18–22, each dot a block with 10,000 transactions; the single block on top (10838(1)) is the next, empty block.

Disclosure

This report text was prepared with AI assistance.
All test data, measurements, and reported metrics were produced from actual test runs without AI-generated data.

Executive Summary

Peak slot: 250,000 transactions in one 3 s slot — 83,333.33 TPS, 100% of the configured ceiling
Test load: 1,000,000 transactions submitted.
Reported window: 104 blocks in 5 consecutive slots (15 s of slot time).
Finality: justified and finalized checkpoints advanced every epoch, identical on all 16 nodes; no service restarts

Test Configuration

Network settings

Network type: Private
Slot duration: 3 sec
Blocks per slot: 25
Block gas limit: 210,000,000 — exactly 10,000 transfers of 21,000 gas
Nodes: 16 (+ 1 RPC node)
Validators: 163,840 (10,240 per node)
Network lifetime: launched on 2026-09-17 and ran continuously for about two weeks; the test was run on day 12

Infrastructure

Cloud provider: OVHcloud Public Cloud, region US-WEST-OR-1
Node instance: b3-32-flex — 8 vCPU, 32 GB RAM, high-speed-gen2 volumes
RPC instance: b3-16-flex

Data source

Source: eth.getBlock(i) export (block_number slot tx_count gas_used timestamp)
Block range: 1691277-1691380
Timestamp range: 2026-09-29 16:24:54 UTC - 2026-09-29 16:25:06 UTC (1790699094-1790699106)

Method

Generate and submit transaction load to the private network (1,000,000 value transfers).
Export block-level results from the RPC node and the explorer.
Aggregate by slot/timestamp and compute throughput metrics.

Results

Blocks per slot

Slot	Explorer label	Blocks	Transactions	Block time (UTC)
`346769`	`10836(18)`	25	250,000	16:24:54
`346770`	`10836(19)`	24	240,000	16:24:57
`346771`	`10836(20)`	25	250,000	16:25:00
`346772`	`10836(21)`	25	250,000	16:25:03
`346773`	`10836(22)`	5	50,000	16:25:06
Total		104	1,040,000

Test load is the number of transactions submitted. The tables count transaction entries in each block; a transaction may appear in more than one block, so the table total is not a count of distinct submitted transactions.

Explorer block list for the test window: parents, transactions, height, number, epoch(slot), time.

Peak slot throughput

Three slots (346769, 346771, and 346772) each contained 25 blocks with 10,000 transactions per block:

25 × 10,000 / 3 s = 83,333.33 TPS

This reached the configured slot ceiling.

Network behaviour under load

Finality. Justified and finalized checkpoints advanced by one every epoch through epochs 10834–10840, with identical checkpoint roots on all 16 nodes. Finalized epoch changes in the beacon logs: 16:25:40, 16:27:15, 16:28:51, 16:30:28, 16:32:03 UTC.
Stability. No restarts of the execution client, beacon node or validator on any node or on the RPC node.
Propagation. Several nodes briefly lagged in processing the heavy blocks (attestations arrived for blocks they had not imported yet); all caught up shortly after the run without affecting finality.
Resources right before the run: node CPU 54–89 % of 8 vCPU, available memory 9.8–13.9 GB of 32 GB, swap practically unused.

Raw Data

Note

The table below contains all 104 blocks with transactions (1691277–1691380), including transaction counts, gas used, slots, and Unix timestamps.

Test output rows (full dataset)

Block	Slot	Tx count	Gas used	Timestamp
1691277	346769	10000	210000000	1790699094
1691278	346769	10000	210000000	1790699094
1691279	346769	10000	210000000	1790699094
1691280	346769	10000	210000000	1790699094
1691281	346769	10000	210000000	1790699094
1691282	346769	10000	210000000	1790699094
1691283	346769	10000	210000000	1790699094
1691284	346769	10000	210000000	1790699094
1691285	346769	10000	210000000	1790699094
1691286	346769	10000	210000000	1790699094
1691287	346769	10000	210000000	1790699094
1691288	346769	10000	210000000	1790699094
1691289	346769	10000	210000000	1790699094
1691290	346769	10000	210000000	1790699094
1691291	346769	10000	210000000	1790699094
1691292	346769	10000	210000000	1790699094
1691293	346769	10000	210000000	1790699094
1691294	346769	10000	210000000	1790699094
1691295	346769	10000	210000000	1790699094
1691296	346769	10000	210000000	1790699094
1691297	346769	10000	210000000	1790699094
1691298	346769	10000	210000000	1790699094
1691299	346769	10000	210000000	1790699094
1691300	346769	10000	210000000	1790699094
1691301	346769	10000	210000000	1790699094
1691302	346770	10000	210000000	1790699097
1691303	346770	10000	210000000	1790699097
1691304	346770	10000	210000000	1790699097
1691305	346770	10000	210000000	1790699097
1691306	346770	10000	210000000	1790699097
1691307	346770	10000	210000000	1790699097
1691308	346770	10000	210000000	1790699097
1691309	346770	10000	210000000	1790699097
1691310	346770	10000	210000000	1790699097
1691311	346770	10000	210000000	1790699097
1691312	346770	10000	210000000	1790699097
1691313	346770	10000	210000000	1790699097
1691314	346770	10000	210000000	1790699097
1691315	346770	10000	210000000	1790699097
1691316	346770	10000	210000000	1790699097
1691317	346770	10000	210000000	1790699097
1691318	346770	10000	210000000	1790699097
1691319	346770	10000	210000000	1790699097
1691320	346770	10000	210000000	1790699097
1691321	346770	10000	210000000	1790699097
1691322	346770	10000	210000000	1790699097
1691323	346770	10000	210000000	1790699097
1691324	346770	10000	210000000	1790699097
1691325	346770	10000	210000000	1790699097
1691326	346771	10000	210000000	1790699100
1691327	346771	10000	210000000	1790699100
1691328	346771	10000	210000000	1790699100
1691329	346771	10000	210000000	1790699100
1691330	346771	10000	210000000	1790699100
1691331	346771	10000	210000000	1790699100
1691332	346771	10000	210000000	1790699100
1691333	346771	10000	210000000	1790699100
1691334	346771	10000	210000000	1790699100
1691335	346771	10000	210000000	1790699100
1691336	346771	10000	210000000	1790699100
1691337	346771	10000	210000000	1790699100
1691338	346771	10000	210000000	1790699100
1691339	346771	10000	210000000	1790699100
1691340	346771	10000	210000000	1790699100
1691341	346771	10000	210000000	1790699100
1691342	346771	10000	210000000	1790699100
1691343	346771	10000	210000000	1790699100
1691344	346771	10000	210000000	1790699100
1691345	346771	10000	210000000	1790699100
1691346	346771	10000	210000000	1790699100
1691347	346771	10000	210000000	1790699100
1691348	346771	10000	210000000	1790699100
1691349	346771	10000	210000000	1790699100
1691350	346771	10000	210000000	1790699100
1691351	346772	10000	210000000	1790699103
1691352	346772	10000	210000000	1790699103
1691353	346772	10000	0	1790699103
1691354	346772	10000	210000000	1790699103
1691355	346772	10000	210000000	1790699103
1691356	346772	10000	0	1790699103
1691357	346772	10000	210000000	1790699103
1691358	346772	10000	210000000	1790699103
1691359	346772	10000	210000000	1790699103
1691360	346772	10000	210000000	1790699103
1691361	346772	10000	210000000	1790699103
1691362	346772	10000	210000000	1790699103
1691363	346772	10000	210000000	1790699103
1691364	346772	10000	210000000	1790699103
1691365	346772	10000	210000000	1790699103
1691366	346772	10000	210000000	1790699103
1691367	346772	10000	210000000	1790699103
1691368	346772	10000	210000000	1790699103
1691369	346772	10000	210000000	1790699103
1691370	346772	10000	210000000	1790699103
1691371	346772	10000	210000000	1790699103
1691372	346772	10000	210000000	1790699103
1691373	346772	10000	210000000	1790699103
1691374	346772	10000	210000000	1790699103
1691375	346773	10000	210000000	1790699106
1691376	346772	10000	210000000	1790699103
1691377	346773	10000	0	1790699106
1691378	346773	10000	210000000	1790699106
1691379	346773	10000	210000000	1790699106
1691380	346773	10000	0	1790699106

Important Limitation

All 16 nodes run in a single cloud region. In a network distributed across regions and operators, block propagation takes longer and throughput is expected to be lower.