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Solana completes SIMD-0525 speed upgrades

Updated 4 times since CLSTR started tracking revisions of this situation.

What changed

2026-09-19 16:59 UTC → 2026-10-11 19:50 UTC · added removed

Solana mainnet performance completes SIMD-0525 speed upgrades

Solana has implemented a series of mainnet upgrades aimed at increasing network capacity and reducing latency. On July 29, the network increased completed its mainnet block limit from 60 million to 100 million compute units (CUs) following the activation of proposal SIMD-0286. This 66% capacity increase was designed multi-stage rollout to accommodate rising demand from trading and payment applications while maintaining a 400ms block time. Following this, the network successfully executed its first speed upgrade, reducing the reduce target slot block production time from approximately 400ms to 350ms. This transition, which began at Epoch 1020, marks 200 milliseconds, the first final phase of a four-stage plan under the SIMD-0525 improvement proposal. The long-term roadmap aims to progressively lower This reduces the original 400ms slot times target by half, enabling five block-production opportunities per second. Confirmed by Agave validator client developer Anza, the upgrade also shortens the network epoch duration from approximately 48 hours to 300ms, 250ms, and eventually 200ms. 24 hours. To maintain a consistent theoretical maximum of approximately 250 million compute units per second, stable processing capacity, the maximum compute units allowed computing budget per block were was reduced from 37.5 million to 87.5 30 million CUs compute units. On October 9, 2026, at the 350ms target. Jacob Creech, Vice President start of Technology at the Solana Foundation, described Epoch 1053, the implementation as entering ‘a new era of 350ms.’ The network has since reached its 300ms slot activated the 200ms target. This milestone coincides with a call Initial data from validator software developer Anza for Solana Compass indicated an average slot time of 218.3 milliseconds during the adoption first 26.2 hours of Agave v4.3. The increased implementation. Following these speed is expected to impact network economics; research suggests shorter trading intervals may benefit liquidity providers in automated market makers (AMMs) by reducing improvements, the window for arbitrageurs to exploit outdated pool prices. On September 19, 2026, Solana progressed to Foundation has identified the next stage of Alpenglow upgrade as the SIMD-0525 proposal, reducing next major milestone. This upcoming transition aims to replace the target slot time from 300ms TowerBFT voting layer with Votor, which is intended to 250ms. This adjustment increases reduce block production frequency finality from approximately 12.8 seconds to four slots per second, a nearly 17% increase. To maintain stability, roughly 150 milliseconds. In preparation, Jito has outlined validator maintenance requirements, noting that during the update reduces computation and data limits for each individual slot in proportion Alpenglow transition, Block Assembly Marketplace (BAM) nodes will enter maintenance mode. While bundled transactions are expected to remain operational, Multi-Packet Processing and Dynamic Block Incentives will be temporarily unavailable, and the shorter duration, ensuring BAM auction cadence will be adjusted to 20 milliseconds to align with the total processing ceiling per unit of time remains relatively consistent. new slot times.

Versions

  1. 2026-10-11 19:50 UTC Solana completes SIMD-0525 speed upgrades
  2. 2026-09-19 16:59 UTC Solana mainnet performance upgrades
  3. 2026-09-09 22:18 UTC Solana mainnet performance upgrades
  4. 2026-08-21 20:51 UTC Solana mainnet performance upgrades
  5. 2026-08-19 21:57 UTC Solana mainnet performance upgrades

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