# Starknet v0.13.0: Performance Improvement **URL:** \ **Category:** ๐Ÿ†™ Versions Upgrade\ **Created:** [January 11, 2024, 10:39am UTC](https://community.starknet.io/t/starknet-v0-13-0-performance-improvement/112644 "2024-01-11T10:39:06Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![ilia](https://dub1.discourse-cdn.com/flex005/user_avatar/community.starknet.io/ilia/32/1318_2.png) [@ilia](https://community.starknet.io/u/ilia)\ **Post date:** [January 11, 2024, 10:39am UTC](https://community.starknet.io/t/starknet-v0-13-0-performance-improvement/112644/1 "2024-01-11T10:39:06Z")
Coming to Mainnet on Jan 15! On Dec 13, 2023, we posted details about Starknet v0.13.0 on the community forum. [The post](https://community.starknet.io/t/starknet-v0-13-0-support-for-fee-payment-in-strk-reduced-transaction-fees/109608/1) outlined the main changes: [v3 transactions](https://community.starknet.io/t/starknet-v0-13-0-support-for-fee-payment-in-strk-reduced-transaction-fees/109608#v3-transactions-1) and [transaction fee reductions](https://community.starknet.io/t/starknet-v0-13-0-support-for-fee-payment-in-strk-reduced-transaction-fees/109608). Over the last few weeks, internal stress-testing revealed several openings for performance improvements: some Python code begging to be replaced with Rust, an optimization of the `ec_op` builtin to use projective coordinates instead of affine coordinates, and some caching. After concentrated efforts, all of these improvements were implemented. Before diving into the results, an important schedule clarification: - The Mainnet upgrade date of Jan 10, 2024 did not include these performance improvements. The holdup is due to our wish to run these changes a few more days on testnet. - These performance improvements will be included in an additional Mainnet upgrade, which will take place on **Jan 15, 2024**. Now here is what you all want to see: below is a table detailing the results of the various optimizations that were done. The example we choose is for `erc20_transfer`. | `erc20_transfer` | Cairo0 account & token contract | Cairo account & token contract | | --- | --- | --- | | Pre-improvements | 80 TPS | 18 TPS | | Post-improvements | 150 TPS | 70 TPS | There are several caveats to be made: 1. As you can see, there is a gap in performance between Cairo0 and Cairo. The gap is due to the powerful safety properties provided by [Sierra](https://docs.starknet.io/documentation/architecture_and_concepts/Smart_Contracts/cairo-and-sierra/). However, as shown in the table, it can be reduced considerably by careful optimization. Following the optimizations, the gap between Cairo0 and Cairo was halved largely thanks to the `ec_op` optimization which accelerated the validate of the Cairo accounts used in our testing. Indeed the tested Cairo0 accounts used the `ECDSA` builtin which is illegal in Sierra (and therefore Cairo) as it can fail. 2. Throughput in practice depends on many factors. A major one is the % of the block using `ec_op`, which enjoys a roughly 60x speedup. This means a block with few such validate functions, or few multicalls to such accounts, will exhibit a smaller speedup compared to the erc20\_transfer scenario with many separate transactions. 3. In particular, since the โ€œpureโ€ scenario of transfers is not the standard traffic on Starknet, the practical throughput improvement on Mainnet will likely be less drastic in the average case. ---
**Author:** ![sgc-code](https://dub1.discourse-cdn.com/flex005/user_avatar/community.starknet.io/sgc-code/32/71664_2.png) [@sgc-code](https://community.starknet.io/u/sgc-code)\ **Post date:** [January 11, 2024, 11:43am UTC](https://community.starknet.io/t/starknet-v0-13-0-performance-improvement/112644/2 "2024-01-11T11:43:08Z")
Hi, thanks for the update. Hope you can clarify a few things: Does it mean that today the fees are calculated as described in this document [Gas and transaction fees (Prior to Starknet 0.13.0) :: Starknet documentation](https://docs.starknet.io/documentation/architecture_and_concepts/Network_Architecture/fee-mechanism-pre-v0.13.0/) Also, what are the numbers in the table above? ---
**Author:** ![ilia](https://dub1.discourse-cdn.com/flex005/user_avatar/community.starknet.io/ilia/32/1318_2.png) [@ilia](https://community.starknet.io/u/ilia)\ **Post date:** [January 11, 2024, 12:25pm UTC](https://community.starknet.io/t/starknet-v0-13-0-performance-improvement/112644/3 "2024-01-11T12:25:10Z")
Hey @sgc-code thanks for the quick reply! - No - the correct reference is now [after v0.13.0](https://docs.starknet.io/documentation/architecture_and_concepts/Network_Architecture/fee-mechanism/). - The numbers are erc-20 transfers per second. I clarified this in the table now. ---
**Author:** ![sgc-code](https://dub1.discourse-cdn.com/flex005/user_avatar/community.starknet.io/sgc-code/32/71664_2.png) [@sgc-code](https://community.starknet.io/u/sgc-code)\ **Post date:** [January 11, 2024, 1:33pm UTC](https://community.starknet.io/t/starknet-v0-13-0-performance-improvement/112644/4 "2024-01-11T13:33:14Z")
Great to hear many optimizations are already in place. So if the new step/builtin costs are already included, and the L1 DA optimization is also available now. Can you clarify what are the improvements that will take effect on Jan 15th? ---
**Author:** ![dtuios](https://dub1.discourse-cdn.com/flex005/user_avatar/community.starknet.io/dtuios/32/79286_2.png) [@dtuios](https://community.starknet.io/u/dtuios)\ **Post date:** [January 15, 2024, 1:02am UTC](https://community.starknet.io/t/starknet-v0-13-0-performance-improvement/112644/5 "2024-01-15T01:02:49Z")
is this upgrade V0.13.1?