XMRig

XMRig is high performance Monero (XMR) CPU miner, with the official full Windows support. Based on cpuminer-multi with heavy optimizations/rewrites and removing a lot of legacy code.

Table of contents

• Features
• Download
• Usage
• Build
• Other information

Features

• High performance, faster than others (290+ H/s on i7 6700).
• Official Windows support.
• Small Windows executable, only 350 KB without dependencies.
• Support for backup (failover) mining server.
• keepalived support.
• Command line options compatible with cpuminer.
• It's open source software.

Download

• Binary releases: https://github.com/xmrig/xmrig/releases
• Git tree: https://github.com/xmrig/xmrig.git
  • Clone with git clone https://github.com/xmrig/xmrig.git

Usage

Basic example

xmrig.exe -o xmr-eu.dwarfpool.com:8005 -b xmr-usa.dwarfpool.com:8005 -u YOUR_WALLET -p x -k

Options

  -o, --url=URL         URL of mining server
  -b, --backup-url=URL  URL of backup mining server
  -O, --userpass=U:P    username:password pair for mining server
  -u, --user=USERNAME   username for mining server
  -p, --pass=PASSWORD   password for mining server
  -t, --threads=N       number of miner threads
  -v, --av=N            algorithm variation, 0 auto select
  -k, --keepalive       send keepalived for prevent timeout (need pool support)
  -r, --retries=N       number of times to retry before switch to backup server (default: 5)
  -R, --retry-pause=N   time to pause between retries (default: 5)
      --cpu-affinity    set process affinity to cpu core(s), mask 0x3 for cores 0 and 1
      --no-color        disable colored output
      --donate-level=N  donate level, default 5% (5 minutes in 100 minutes)
  -B, --background      run the miner in the background
  -c, --config=FILE     load a JSON-format configuration file
  -h, --help            display this help and exit
  -V, --version         output version information and exit

Build

Ubuntu (Debian-based distros)

sudo apt-get install git build-essential cmake libcurl4-openssl-dev
git clone https://github.com/xmrig/xmrig.git
cd xmrig
mkdir build
cd build
cmake ..
make

Windows

It's complicated, you need MSYS2, custom libcurl build, and of course CMake too. Configure options for libcurl:

./configure --disable-shared --enable-optimize --enable-threaded-resolver --disable-libcurl-option --disable-ares --disable-rt --disable-ftp --disable-file --disable-ldap --disable-ldaps --disable-rtsp --disable-dict --disable-telnet --disable-tftp --disable-pop3 --disable-imap --disable-smb --disable-smtp --disable-gopher --disable-manual --disable-ipv6 --disable-sspi --disable-crypto-auth --disable-ntlm-wb --disable-tls-srp --disable-unix-sockets --without-zlib --without-winssl --without-ssl --without-libssh2 --without-nghttp2 --disable-cookies --without-ca-bundle

CMake options:

cmake .. -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DCURL_INCLUDE_DIR="c:\<path>\curl-7.53.1\include" -DCURL_LIBRARY="c:\<path>\curl-7.53.1\lib\.libs"

Other information

• Now only support 64 bit operating systems (Windows/Linux).
• No HTTP support, only stratum protocol support.
• No TLS support.
• Default donation 5% (5 minutes in 100 minutes) can be reduced to 1% via command line option --donate-level.

CPU mining performance

• i7-6700 - 290+ H/s (4 threads, cpu affinity 0xAA)
• Dual E5620 - 377 H/s (12 threads, cpu affinity 0xEEEE)

Please note performance is highly dependent on system load. The numbers above are obtained on an idle system. Tasks heavily using a processor cache, such as video playback, can greatly degrade hashrate. Optimal number of threads depends on the size of the L3 cache of a processor, 1 thread requires 2 MB of cache.

Maximum performance checklist

• Idle operating system.
• Do not exceed optimal thread count.
• Use modern CPUs with AES-NI instructuon set.
• Try setup optimal cpu affinity.
• Enable fast memory (Large/Huge pages).