eos ram价格计算 cpu net单位转换
eos的 ram cpu net 简介
eos区块链中，在界面上表现与其他区块链不同的是多出了，ram，cpu，net的显示，
ram
相当于存储空间，资产转账、智能合约的部署与执行都会占用区块链上的存储，所以在执行这些操作之前要保证自己又足够的ram，每次执行都会消耗ram。ram可以购买，卖出，买卖对象账户是eosio.ram。购买需要手续费0.5%，卖出需要手续费0.5%，这些手续费转入eosio.ramfee账户中。
cpu、net
执行转账、智能合约操作都需要消耗cpu、net，在电脑中执行程序也需要cpu，但是cpu、net消耗后会按时间段按百分比返还给用户。如果cpu、net用完了，可以等一段时间，系统会逐步返回这些资源。
ram价格计算 eos/kb
首先通过向nodeos节点开放的api请求市场信息
http://127.0.0.1:8888/v1/chain/get_table_rows
参数
{
"scope":"eosio",
"code":"eosio",
"table":"rammarket",
"json":true
}
返回
{
"rows": [
{
"supply": "10000000000.0000 RAMCORE",
"base": {
"balance": "63646619759 RAM",
"weight": "0.50000000000000000"
},
"quote": {
"balance": "1079703.4785 SYS",
"weight": "0.50000000000000000"
}
}
],
"more": false
}
ram的价格=base.balance/quote.balance*1024(eos/kb)
63646619759/1079703.4785 * 1024 = 0.017371172(eos/kb)
获取用户ram cpu net 信息
请求api
http://127.0.0.1:8888/v1/chain/get_account
参数
{
"account_name":"lwz"
}
返回
{
"account_name": "lwz",
"head_block_num": 2752932,
"head_block_time": "2019-01-05T08:13:41.000",
"privileged": false,
"last_code_update": "1970-01-01T00:00:00.000",
"created": "2018-12-20T06:16:56.000",
"core_liquid_balance": "19976.0014 SYS",
"ram_quota": 1340834870,
"net_weight": "1000000000000",
"cpu_weight": "1000000000000",
"net_limit": {
"used": 322,
"available": "181137776466217",
"max": "181137776466539"
},
"cpu_limit": {
"used": 1171,
"available": "34549288337472",
"max": "34549288338643"
},
"ram_usage": 3686,
"permissions": [
{
"perm_name": "active",
"parent": "owner",
"required_auth": {
"threshold": 1,
"keys": [
{
"key": "EOS6BBKKrRxsRarQk7sdK3wXAc9SMCbnmsWvF6rL27r3udxJJ7pmP",
"weight": 1
}
],
"accounts": [],
"waits": []
}
},
{
"perm_name": "owner",
"parent": "",
"required_auth": {
"threshold": 1,
"keys": [
{
"key": "EOS6BBKKrRxsRarQk7sdK3wXAc9SMCbnmsWvF6rL27r3udxJJ7pmP",
"weight": 1
}
],
"accounts": [],
"waits": []
}
}
],
"total_resources": {
"owner": "lwz",
"net_weight": "100000000.0000 SYS",
"cpu_weight": "100000000.0000 SYS",
"ram_bytes": 1340834870
},
"self_delegated_bandwidth": {
"from": "lwz",
"to": "lwz",
"net_weight": "100000000.0000 SYS",
"cpu_weight": "100000000.0000 SYS"
},
"refund_request": null,
"voter_info": {
"owner": "lwz",
"proxy": "",
"producers": [],
"staked": "2000000000000",
"last_vote_weight": "0.00000000000000000",
"proxied_vote_weight": "0.00000000000000000",
"is_proxy": 0
}
}
其中有用的参数是
{
"ram_quota": 1340834870,
"net_limit": {
"used": 322,
"available": "181137776466217",
"max": "181137776466539"
},
"cpu_limit": {
"used": 1171,
"available": "34549288337472",
"max": "34549288338643"
},
"ram_usage": 3686
}
ram换算
查询结果单位为byte,也就是1340834870byte
按照通常存储计算，byte=Kb/1024=Mb/1024/1024=Gb/1024/1024/1024
1340834870/1024/1024/1024 = 1.248749783Gb
net换算
查询结果单位为byte，有就是181137776466217byte
net的单位为byte,Kb,Mb,Gb表示
按照通常带宽计算，byte=Kb/1024=Mb/1024/1024=Gb/1024/1024/1024=Tb/1024/1024/1024/1024
181137776466217/1024/1024/1024/1024 = 164.743848Tb
cpu换算
查询结果单位为us(微秒)，也就是34549288337472
cpu的单位为ms，s
界面显示为：34549288337472us
换算成hr（小时）:
34549288337472/1000/1000/60/60 = 9597.024538hr
换算结果通过命令行验证
执行命令
cleos --wallet-url http://192.168.10.11:8900 -u http://192.168.10.11:8888 get account lwz
返回信息
created: 2018-12-20T06:16:56.000
permissions:
owner 1: 1 EOS6BBKKrRxsRarQk7sdK3wXAc9SMCbnmsWvF6rL27r3udxJJ7pmP
active 1: 1 EOS6BBKKrRxsRarQk7sdK3wXAc9SMCbnmsWvF6rL27r3udxJJ7pmP
memory:
quota: 1.249 GiB used: 3.6 KiB
net bandwidth:
staked: 100000000.0000 SYS (total stake delegated from account to self)
delegated: 0.0000 SYS (total staked delegated to account from others)
used: 322 bytes
available: 164.7 TiB
limit: 164.7 TiB
cpu bandwidth:
staked: 100000000.0000 SYS (total stake delegated from account to self)
delegated: 0.0000 SYS (total staked delegated to account from others)
used: 1.171 ms
available: 9597 hr
limit: 9597 hr
SYS balances:
liquid: 19976.0014 SYS
staked: 200000000.0000 SYS
unstaking: 0.0000 SYS
total: 200019976.0014 SYS
producers: <not voted>
对换算的结果可通过命令行进行验证
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