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  • unix环境中,百万级数据量参数配置


    1、修改内核网络参数 (注意:使用dmesg命令查看日志,动态修改)
    vi /etc/sysctrl.conf
    fs.inotify.max_user_watches = 2000000
    fs.nr_open = 2000000
    fs.file-max = 2000000
    net.core.rmem_default = 1048576
    net.core.wmem_default = 1048576
    net.core.rmem_max = 8388608
    net.core.wmem_max = 8388608
    net.core.netdev_max_backlog = 3000
    net.core.somaxconn = 256
    net.ipv4.tcp_tw_recycle = 1
    net.ipv4.tcp_tw_reuse = 1
    net.ipv4.tcp_fin_timeout = 2
    net.ipv4.tcp_max_tw_buckets = 1000
    net.ipv4.tcp_rmem = 4096 1048576 8388608
    net.ipv4.tcp_wmem = 4096 1048576 8388608
    net.ipv4.tcp_timestamps = 0
    net.ipv4.tcp_sack = 0
    net.ipv4.tcp_no_metrics_save = 1
    net.ipv4.tcp_keepalive_time = 1800
    net.ipv4.tcp_keepalive_intvl = 30
    net.ipv4.tcp_keepalive_probes = 3
    net.ipv4.tcp_max_syn_backlog = 8192
    net.ipv4.tcp_syncookies = 1
    net.ipv4.tcp_window_scaling = 1
    net.ipv4.icmp_echo_ignore_broadcasts = 1
    net.ipv4.route.flush = 1
    net.ipv4.conf.all.rp_filter = 1
    net.ipv4.conf.default.promote_secondaries = 1
    net.ipv4.conf.all.promote_secondaries = 1
    net.ipv4.conf.all.arp_ignore = 2
    net.ipv4.conf.default.arp_ignore = 2
    net.ipv4.ip_local_port_range = 1024 65535
    net.ipv4.conf.all.arp_ignore = 2
    net.ipv4.conf.default.arp_announce = 1
    net.ipv4.conf.all.arp_announce = 1
    kernel.sysrq = 1
      
    2、文件句柄修改 .目前只支持linux内核2.6.25之后(Suse11)
                   sudo bash -c 'echo 1500000 > /proc/sys/fs/nr_open'
                   vim /etc/security/limits.conf
                   添加:
    * soft nofile 1500000
                      *  hard nofile 1500000
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  • 原文地址:https://www.cnblogs.com/javawebsoa/p/3105106.html
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