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ver 2.6

    1: #!/bin/sh
    2: #
    3: # elwix sysctl.conf
    4: #
    5: # $Id: sysctl.conf,v 1.10 2021/03/11 13:59:50 misho Exp $
    6: 
    7: sysctl -w kern.coredump=0
    8: sysctl -w debug.debugger_on_panic=0
    9: sysctl -w net.bpf.zerocopy_enable=1
   10: sysctl -w net.bpf.optimize_writers=1
   11: sysctl -w kern.ipc.somaxconn=1024
   12: sysctl -w kern.eventtimer.periodic=1
   13: sysctl -w net.route.netisr_maxqlen=2048
   14: sysctl -w net.inet.ip.redirect=0
   15: sysctl -w net.inet.ip.forwarding=1
   16: sysctl -w net.inet.icmp.reply_from_interface=1
   17: sysctl -w net.inet.tcp.rfc1323=1
   18: sysctl -w net.inet.tcp.ecn.enable=1
   19: sysctl -w net.inet6.ip6.forwarding=1
   20: sysctl -w net.inet6.ip6.accept_rtadv=0
   21: sysctl -w net.inet6.ip6.no_radr=0
   22: sysctl -w kern.maxfilesperproc=4096
   23: #sysctl -w kern.maxfiles=65536
   24: #sysctl -w kern.ipc.maxsockets=65536
   25: #sysctl -w kern.ipc.maxsockbuf=16777216
   26: #sysctl -w kern.ipc.maxpipekva=16777216
   27: #sysctl -w net.graph.maxdgram=131072
   28: #sysctl -w net.graph.recvspace=131072
   29: # Sendmsg() cat't send messages more than maxdgram length.
   30: # Default value causes routing software to fail with OSPF if jumbo frames is turned on.
   31: sysctl -w net.inet.raw.maxdgram=16384
   32: sysctl -w net.inet.raw.recvspace=16384
   33: # Current CPU can manage a lot's more of interrupts than default (1000)
   34: # The 9000 value was found in /usr/src/sys/dev/ixgbe/README
   35: sysctl -w hw.intr_storm_threshold=9000
   36: 
   37: sysctl -w kern.random.harvest.mask=351
   38: 
   39: # Improve a lot's the polling performance
   40: # Enable idle_poll
   41: #sysctl -w kern.polling.idle_poll=1
   42: # The default value of 150 was for FastEthernet:
   43: #sysctl -w kern.polling.burst_max=20000
   44: #sysctl -w kern.polling.each_burst=50
   45: # For a router, don't need to share 50/50 with user process
   46: #sysctl -w kern.polling.user_frac=30
   47: 
   48: #sysctl -w hw.ath.bstuck=8
   49: #net.inet.tcp.mssdflt=1452
   50: #net.inet.tcp.hostcache.expire=1
   51: #dev.ath.0.hal.ar5416_biasadj=1
   52: 
   53: #Power save: Disable power for device with no driver loaded
   54: sysctl -w hw.pci.do_power_nodriver=3
   55: 
   56: # blackhole(8)
   57: # Disable this feature because prevent traceroute to works correctly
   58: #sysctl -w net.inet.tcp.blackhole=2
   59: #sysctl -w net.inet.udp.blackhole=1
   60: # prevent users from seeing information about processes that
   61: # are being run under another UID.
   62: #sysctl -w security.bsd.see_other_uids=0
   63: #sysctl -w security.bsd.see_other_gids=0
   64: # Prevent some potential exploit
   65: #sysctl -w security.bsd.unprivileged_proc_debug=0
   66: 
   67: # Intel NIC tunning
   68: #sysctl -w hw.em.rx_process_limit=-1
   69: #sysctl -w hw.em.txd=2048
   70: #sysctl -w hw.em.rxd=048
   71: 
   72: #sysctl -w hw.igb.rx_process_limit=-1
   73: #sysctl -w hw.igb.txd=2048
   74: #sysctl -w hw.igb.rxd=048
   75: #sysctl -w hw.igb.max_interrupt_rate=16000