2.4「Dfinity」canister cycles相关问题
一、使用dfx创建canister自定义cycles充值数量
创建 canister 时可以指定给每个canister分配多少cycles，比如分配1T：
dfx deploy --with-cycles=1000000000000
二、可以从不用的canister回收cycles
dfx canister --network=ic stop --all或canisterID
dfx canister --network=ic delete --all或canisterID
三、创建canister的手续费
每个canister的手续费为0.1T cycles，从转移到canister的cycles中自动扣除。
附cycles花费详情表：
Cycles Cost per Transaction (as of July 26, 2021)
| Transaction | Description | All Application Subnets |
|---|---|---|
| Canister Created | For creating canisters on a subnet | 100,000,000,000 |
| Compute Percent Allocated Per Second | For each percent of the reserved compute allocation (a scarce resource). | 100,000 |
| Update Message Execution | For every update message executed | 590,000 |
| Ten Update Instructions Execution | For every 10 instructions executed when executing update type messages | 4 |
| Xnet Call | For every inter-canister call performed (includes the cost for sending the request and receiving the response) | 260,000 |
| Xnet Byte Transmission | For every byte sent in an inter-canister call (for bytes sent in the request and response) | 1,000 |
| Ingress Message Reception | For every ingress message received | 1,200,000 |
| Ingress Byte Reception | For every byte received in an ingress message | 2,000 |
| GB Storage Per Second | For storing a GB of data per second | 127,000 |
Cost per Transaction in $USD (as of July 26, 2021)
| Transaction | Description | All Application Subnets |
|---|---|---|
| Canister Created | For creating canisters on a subnet | $0.142 |
| Compute Percent Allocated Per Second | For each percent of the reserved compute allocation (a scarce resource). | $0.000000142 |
| Update Message Execution | For every update message executed | $0.0000008378 |
| Ten Update Instructions Execution | For every 10 instructions executed when executing update type messages | $0.00000000000568 |
| Xnet Call | For every inter-canister call performed (includes the cost for sending the request and receiving the response) | $0.0000003692 |
| Xnet Byte Transmission | For every byte sent in an inter-canister call (for bytes sent in the request and response) | $0.00000000142 |
| Ingress Message Reception | For every ingress message received | $0.000001704 |
| Ingress Byte Reception | For every byte received in an ingress message | $0.00000000284 |
| GB Storage Per Second | For storing a GB of data per second | $0.00000018034 |
Assuming a 30 day month —
| GB Storage Per Month | For storing a GB of data per month | $0.467 |
PS：使用Bucket上传4GB文件的update花费只有大约0.0195美元。