Overview
This section defines the current main constraints regarding resource usage on the Internet Computer that developers should be aware of.
本节定义了开发人员应注意的有关互联网计算机上资源使用的当前主要限制。
Resource constraints and limits
| Resource | Constraint |
|---|---|
| Canister queue limit | 500 messages |
| Maximum ingress and cross-net inter-canister call payload | 2MB |
| Maximum same-subnet inter-canister call payload (may be deprecated at some point) | 10MB |
| Maximum response size | 2MB |
| Instruction limit per update call/heartbeat/timer | 20B per method invocation |
| Instruction limit query calls | 5B |
| Instruction limit for canister install and upgrade | 200B |
| Subnet capacity | 700GB |
| Wasm heap size | 4GB |
| Wasm stable memory | 96GB |
| Wasm custom sections | 2GB per subnet; 1MB per canister; 16 sections at most (per canister) |
| Wasm code section | 10MB |
| Query calls execution threads | 2 per replica node |
| Update calls execution threads | 4 per subnet |
Additional notes
The IC may reject WebAssembly modules for reasons such that:
IC 可能会因以下原因拒绝 WebAssembly 模块：
- They declare more than 50,000 functions.
- They declare more than 1,000 globals.
- They declare more than 16 exported custom sections (the custom section names with prefix icp:).
- The number of all exported functions called canister_update <name> or canister_query <name> exceeds 1,000.
- The sum of <name> lengths in all exported functions called canister_update <name> or canister_query <name> exceeds 20,000.
- The total size of the exported custom sections exceeds 1MiB.
More information regarding these restrictions can be found in the Internet Computer interface specification.
Resource constraints and limits on the Internet Computer