前言

• geth version

Geth Version: 1.9.7-stable Git Commit: a718daa674a2e23cb0c8a6789f7e5467e705bbbd Git Commit Date: 20191107 Architecture: 386 Protocol Versions: [64 63] Network Id: 1 Go Version: go1.13.4 Operating System: windows GOPATH= GOROOT=C:\go

• windows 7

錯誤信息

INFO [11-22|11:09:41.205] Starting peer-to-peer node instance=Geth/v1.9.7-stable-a718daa6/windows-386/go1.13.4 INFO [11-22|11:09:41.205] Allocated trie memory caches clean=674.00MiB dirty=674.00MiB INFO [11-22|11:09:41.205] Allocated cache and file handles database=D:\\go-ethereum\\privNetwork\\data\\geth\\chaindata cache=1.32GiB handles=8192 INFO [11-22|11:09:41.253] Opened ancient database database=D:\\go-ethereum\\privNetwork\\data\\geth\\chaindata\\ancient INFO [11-22|11:09:41.254] Initialised chain configuration config="{ChainID: 12345 Homestead: 0 DAO: <nil> DAOSupport: false EIP150: 0 EIP155: 0 EIP158: 0 Byzantium: 0 Constantinople: 0 Petersburg: 0 Istanbul: <nil> Engine: unknown}" INFO [11-22|11:09:41.254] Disk storage enabled for ethash caches dir=D:\\go-ethereum\\privNetwork\\data\\geth\\ethash count=3 INFO [11-22|11:09:41.254] Disk storage enabled for ethash DAGs dir=C:\\Users\\Administrator\\AppData\\Local\\Ethash count=2 INFO [11-22|11:09:41.254] Initialising Ethereum protocol versions="[64 63]" network=1 dbversion=7 INFO [11-22|11:09:41.495] Loaded most recent local header number=0 hash=ffaf2b…905286 td=131072 age=50y7mo1w INFO [11-22|11:09:41.495] Loaded most recent local full block number=0 hash=ffaf2b…905286 td=131072 age=50y7mo1w INFO [11-22|11:09:41.495] Loaded most recent local fast block number=0 hash=ffaf2b…905286 td=131072 age=50y7mo1w INFO [11-22|11:09:41.496] Loaded local transaction journal transactions=0 dropped=0 INFO [11-22|11:09:41.499] Regenerated local transaction journal transactions=0 accounts=0 runtime: out of memory: cannot allocate 1413480448-byte block (737902592 in use) fatal error: out of memoryruntime stack: runtime.throw(0x156b255, 0xd)C:/go/src/runtime/panic.go:774 +0x64 runtime.largeAlloc(0x54400000, 0x1f20101, 0x37b6f0b0)C:/go/src/runtime/malloc.go:1140 +0x108 runtime.mallocgc.func1()C:/go/src/runtime/malloc.go:1033 +0x39 runtime.systemstack(0x56e22b0)C:/go/src/runtime/asm_386.s:399 +0x53 runtime.mstart()C:/go/src/runtime/proc.go:1146

官方解釋

https://github.com/ethereum/go-ethereum/issues/14633

You will not be able to mine on a 32bit OS (or running a 32bit version of Geth). The ethash mining DAG requires more memory than the 32bit address space allows. Please use a 64bit machine, 64bit OS and 64bit verision of Geth if you wish to mine.

解決辦法

解決辦法1（推薦）：換成64位的geth就可以了
解決辦法2：降低geth的緩存大小

查看geth是32位還是64位

shell> geth version

執行結果：

Geth Version: 1.9.7-stable Git Commit: a718daa674a2e23cb0c8a6789f7e5467e705bbbd Git Commit Date: 20191107 Architecture: amd64 Protocol Versions: [64 63] Network Id: 1 Go Version: go1.13.4 Operating System: windows GOPATH= GOROOT=C:\go

Architecture: amd64表示是64位的應用程序。

windows中查看exe程序是32位還是64位

參考：https://www.cnblogs.com/chrischennx/p/6132435.html

總結

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