As the Solana blockchain continues to manage increasing trading activity, payments and on-chain apps, it is getting ready for a significant network upgrade that would raise each block’s potential computing capacity by almost two-thirds.
The upgrade, which is set to take effect on July 29, would increase Solana’s maximum block size from 60 million compute units (CUs) to 100 million CUs under SIMD-0286, a proposal written by Jito Labs, according to the official statement.
Solana blocks are getting 66% bigger.
SIMD-0286 raises the block limit from 60M → 100M compute units.
Mainnet activation is scheduled to go live with epoch 1009 (~14 hours). This is already live on testnet and devnet.
Read more here: https://t.co/oynfSAW9oK
— Solana Developers (@solana_devs) July 28, 2026
Compute units quantify the amount of time spent processing work transactions on Solana. Without altering how current apps function, validators can add more transactions to each block by raising the block limit.
The proposal does not require developers to upgrade their programs or change transaction types. Rather, it maintains other network constraints while increasing the total amount of processing accessible within each block. The most recent boost complements Solana’s larger initiative to increase network throughput.
The network increased its block limit from 50 million to 60 million compute units last year, and according to the Solana Foundation, increasing demand has demonstrated the need for more capacity.
Over 56 million compute units have been used in about 11% of all blocks produced in the last year, according to Solana. When users compete for blockspace, congestion usually happens during times of high market volatility.
The revised restriction gives more space for activity during these demand surges rather than lowering transaction costs or changing transaction priority.
Other protocol constraints won’t change, but the overall compute budget each block would rise dramatically. To avoid one heavily utilized application consuming an excessive portion of each block, the maximum compute allotment for any single writable account will remain fixed at 12 million compute units. Therefore, unrelated apps running concurrently over the network are the main beneficiaries of the added capacity.
According to the Solana Foundation, recent advancements in validator performance offer enough headroom to allow longer blocks without interfering with regular operations, hence the network is anticipated to keep its current 400-millisecond block times.
The increased block limit, according to the Foundation, comes after months of work on execution performance and validator networking. The introduction of XDP (Express Data Path), a kernel-bypass networking mechanism that speeds up block reception and propagation for validators, has been one of the major advancements.
More than 70% of mainnet stake currently runs with XDP enabled, enabling the network to handle larger blocks, according to Solana. Before the mainnet rollout, developers and infrastructure providers have been verifying performance on the testnet and devnet, where the feature has already been turned on.
The boost in block capacity comes after a number of infrastructural improvements meant to broaden Solana’s function beyond simple cryptocurrency trading.
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