Vo FreeBSD som stále začiatočník. S defaultnými nastaveniami siete mi išla pomaly Samba, po niekoľkých hodinách záťaže sieť často padala. Snažil som sa vyladiť sieť na moju prevádzku, v /etc/sysctl mám toto:
net.inet.flowtable.enable=1 net.inet.flowtable.nmbflows=65535 net.inet.ip.fastforwarding=1 net.inet.ip.forwarding=1 net.inet.ip.intr_queue_maxlen=4096 net.inet.tcp.blackhole=2 net.inet.tcp.delacktime=100 net.inet.tcp.delayed_ack=0 net.inet.tcp.ecn.enable=1 net.inet.tcp.fast_finwait2_recycle=1 net.inet.tcp.hostcache.expire=3900 net.inet.tcp.inflight.debug=0 net.inet.tcp.inflight.enable=0 net.inet.tcp.inflight.min=8192 net.inet.tcp.local_slowstart_flightsize=128 net.inet.tcp.local_slowstart_flightsize=16 net.inet.tcp.maxtcptw=131072 net.inet.tcp.mssdflt=1460 net.inet.tcp.nolocaltimewait=1 net.inet.tcp.path_mtu_discovery=0 net.inet.tcp.path_mtu_discovery=1 net.inet.tcp.recvbuf_auto=1 net.inet.tcp.recvbuf_inc=1048576 net.inet.tcp.recvbuf_max=16777216 net.inet.tcp.rfc1323=1 net.inet.tcp.sendbuf_auto=1 net.inet.tcp.sendbuf_inc=1048576 net.inet.tcp.sendbuf_max=16777216 net.inet.tcp.sendspace=4194304 net.inet.tcp.recvspace=4194304 net.inet.tcp.slowstart_flightsize=128 net.inet.tcp.slowstart_flightsize=54 net.inet.udp.blackhole=1 net.inet.udp.maxdgram=65536 net.inet.udp.recvspace=4194304 net.inet.udp.sendspace=4194304 net.inet6.icmp6.nodeinfo=0 net.inet6.icmp6.rediraccept=0 net.inet6.ip6.accept_rtadv=0 net.inet6.ip6.auto_linklocal=0 net.inet6.ip6.prefer_tempaddr=1 net.inet6.ip6.use_tempaddr=1 net.local.stream.recvspace=4194304 net.local.stream.sendspace=4194304 net.inet.tcp.sendbuf_max=16777216 net.inet.tcp.mssdflt=1460 Pri nastavovení som vychádzal z rôznych zdrojov, trošku som aj laboroval. Sieť mi aj teraz občas (po niekoľkých dňoch, niekedy týždňoch) prestane fungovať. Keďže pri serveri nemám monitor, riešim to väčšinou vypnutím a zapnutím servera. Ide o "malý" domáci server s Atom D525+4GB RAM a serverovou sieťovou kartou Intel. Server využívam hlavne ako fileserver (nfs, samba, rsync), beží na ňom pár webov (apache+php+mysql, tomcat) a cez transmission hlavne distribuujem niektoré inštalačné CD a DVD (Sabayon, Debian, PC-BSD). Existuje nejaký example súbor pre nastavenie takto vyťaženej siete? Potrebujem, aby mi Sambu nespomalovala sieť (všade mám 1GBit) a hlavne aby mi sieť neprestávala fungovať. Čo mám v nastaveniach zle, čo mám zmeniť, aby sieť nepadala? S pamäťou problém nemám, swap je väčšinou 0kB. Za každý názor ďakujem. Prikladám ešte výstup sysctl -a | grep net: Vlado Drgoňa
kern.features.inet: 1 kern.features.inet6: 1 kern.random.sys.harvest.ethernet: 1 net.local.stream.recvspace: 131072 net.local.stream.sendspace: 131072 net.local.dgram.recvspace: 4096 net.local.dgram.maxdgram: 2048 net.local.seqpacket.recvspace: 8192 net.local.seqpacket.maxseqpacket: 8192 net.local.taskcount: 0 net.local.recycled: 0 net.local.deferred: 0 net.local.inflight: 0 net.inet.ip.portrange.randomtime: 45 net.inet.ip.portrange.randomcps: 10 net.inet.ip.portrange.randomized: 1 net.inet.ip.portrange.reservedlow: 0 net.inet.ip.portrange.reservedhigh: 1023 net.inet.ip.portrange.hilast: 65535 net.inet.ip.portrange.hifirst: 49152 net.inet.ip.portrange.last: 65535 net.inet.ip.portrange.first: 10000 net.inet.ip.portrange.lowlast: 600 net.inet.ip.portrange.lowfirst: 1023 net.inet.ip.forwarding: 1 net.inet.ip.redirect: 1 net.inet.ip.ttl: 64 net.inet.ip.rtexpire: 3600 net.inet.ip.rtminexpire: 10 net.inet.ip.rtmaxcache: 128 net.inet.ip.sourceroute: 0 net.inet.ip.intr_queue_maxlen: 4096 net.inet.ip.intr_queue_drops: 0 net.inet.ip.accept_sourceroute: 0 net.inet.ip.keepfaith: 0 net.inet.ip.gifttl: 30 net.inet.ip.same_prefix_carp_only: 0 net.inet.ip.random_id_total: 0 net.inet.ip.random_id_collisions: 0 net.inet.ip.random_id_period: 8192 net.inet.ip.mcast.loop: 1 net.inet.ip.mcast.maxsocksrc: 128 net.inet.ip.mcast.maxgrpsrc: 512 net.inet.ip.fastforwarding: 1 net.inet.ip.maxfragpackets: 2048 net.inet.ip.maxfragsperpacket: 16 net.inet.ip.fragpackets: 0 net.inet.ip.check_interface: 0 net.inet.ip.random_id: 0 net.inet.ip.sendsourcequench: 0 net.inet.ip.process_options: 1 net.inet.icmp.maskrepl: 0 net.inet.icmp.icmplim: 200 net.inet.icmp.bmcastecho: 0 net.inet.icmp.quotelen: 8 net.inet.icmp.reply_from_interface: 0 net.inet.icmp.reply_src: net.inet.icmp.log_redirect: 0 net.inet.icmp.drop_redirect: 0 net.inet.icmp.maskfake: 0 net.inet.icmp.icmplim_output: 1 net.inet.igmp.gsrdelay: 10 net.inet.igmp.default_version: 3 net.inet.igmp.legacysupp: 0 net.inet.igmp.v2enable: 1 net.inet.igmp.v1enable: 1 net.inet.igmp.sendlocal: 1 net.inet.igmp.sendra: 1 net.inet.igmp.recvifkludge: 1 net.inet.tcp.rfc1323: 1 net.inet.tcp.mssdflt: 1460 net.inet.tcp.keepidle: 7200000 net.inet.tcp.keepintvl: 75000 net.inet.tcp.sendspace: 4194304 net.inet.tcp.recvspace: 4194304 net.inet.tcp.keepinit: 75000 net.inet.tcp.delacktime: 100 net.inet.tcp.v6mssdflt: 1220 net.inet.tcp.cc.available: newreno net.inet.tcp.cc.algorithm: newreno net.inet.tcp.hostcache.purge: 0 net.inet.tcp.hostcache.prune: 300 net.inet.tcp.hostcache.expire: 3900 net.inet.tcp.hostcache.count: 25 net.inet.tcp.hostcache.bucketlimit: 30 net.inet.tcp.hostcache.hashsize: 512 net.inet.tcp.hostcache.cachelimit: 15360 net.inet.tcp.recvbuf_max: 16777216 net.inet.tcp.recvbuf_inc: 1048576 net.inet.tcp.recvbuf_auto: 1 net.inet.tcp.insecure_rst: 0 net.inet.tcp.ecn.maxretries: 1 net.inet.tcp.ecn.enable: 1 net.inet.tcp.abc_l_var: 2 net.inet.tcp.rfc3465: 1 net.inet.tcp.rfc3390: 1 net.inet.tcp.rfc3042: 1 net.inet.tcp.drop_synfin: 0 net.inet.tcp.delayed_ack: 0 net.inet.tcp.blackhole: 2 net.inet.tcp.log_in_vain: 0 net.inet.tcp.sendbuf_max: 16777216 net.inet.tcp.sendbuf_inc: 1048576 net.inet.tcp.sendbuf_auto: 1 net.inet.tcp.tso: 1 net.inet.tcp.local_slowstart_flightsize: 16 net.inet.tcp.slowstart_flightsize: 54 net.inet.tcp.path_mtu_discovery: 1 net.inet.tcp.reass.overflows: 0 net.inet.tcp.reass.cursegments: 0 net.inet.tcp.reass.maxsegments: 4116 net.inet.tcp.sack.globalholes: 0 net.inet.tcp.sack.globalmaxholes: 65536 net.inet.tcp.sack.maxholes: 128 net.inet.tcp.sack.enable: 1 net.inet.tcp.soreceive_stream: 0 net.inet.tcp.isn_reseed_interval: 0 net.inet.tcp.icmp_may_rst: 1 net.inet.tcp.pcbcount: 44 net.inet.tcp.do_tcpdrain: 1 net.inet.tcp.tcbhashsize: 16384 net.inet.tcp.log_debug: 0 net.inet.tcp.minmss: 216 net.inet.tcp.syncache.rst_on_sock_fail: 1 net.inet.tcp.syncache.rexmtlimit: 3 net.inet.tcp.syncache.hashsize: 512 net.inet.tcp.syncache.count: 0 net.inet.tcp.syncache.cachelimit: 15360 net.inet.tcp.syncache.bucketlimit: 30 net.inet.tcp.syncookies_only: 0 net.inet.tcp.syncookies: 1 net.inet.tcp.timer_race: 0 net.inet.tcp.per_cpu_timers: 0 net.inet.tcp.keepcnt: 8 net.inet.tcp.finwait2_timeout: 60000 net.inet.tcp.fast_finwait2_recycle: 1 net.inet.tcp.always_keepalive: 1 net.inet.tcp.rexmit_slop: 200 net.inet.tcp.rexmit_min: 30 net.inet.tcp.msl: 30000 net.inet.tcp.nolocaltimewait: 1 net.inet.tcp.maxtcptw: 131072 net.inet.udp.checksum: 1 net.inet.udp.maxdgram: 65536 net.inet.udp.recvspace: 4194304 net.inet.udp.blackhole: 1 net.inet.udp.log_in_vain: 0 net.inet.sctp.blackhole: 0 net.inet.sctp.use_dcccecn: 1 net.inet.sctp.rttvar_steady_step: 20 net.inet.sctp.rttvar_eqret: 0 net.inet.sctp.rttvar_rtt: 5 net.inet.sctp.rttvar_bw: 4 net.inet.sctp.initial_cwnd: 3 net.inet.sctp.buffer_splitting: 0 net.inet.sctp.vtag_time_wait: 60 net.inet.sctp.nat_friendly_init: 0 net.inet.sctp.enable_sack_immediately: 0 net.inet.sctp.udp_tunneling_port: 0 net.inet.sctp.mobility_fasthandoff: 0 net.inet.sctp.mobility_base: 0 net.inet.sctp.default_frag_interleave: 1 net.inet.sctp.default_ss_module: 0 net.inet.sctp.default_cc_module: 0 net.inet.sctp.log_level: 0 net.inet.sctp.max_retran_chunk: 30 net.inet.sctp.min_residual: 1452 net.inet.sctp.strict_data_order: 0 net.inet.sctp.abort_at_limit: 0 net.inet.sctp.hb_max_burst: 4 net.inet.sctp.do_sctp_drain: 1 net.inet.sctp.max_chained_mbufs: 5 net.inet.sctp.abc_l_var: 2 net.inet.sctp.nat_friendly: 1 net.inet.sctp.auth_disable: 0 net.inet.sctp.asconf_auth_nochk: 0 net.inet.sctp.cwnd_maxburst: 1 net.inet.sctp.cmt_use_dac: 0 net.inet.sctp.nr_sack_on_off: 0 net.inet.sctp.cmt_on_off: 0 net.inet.sctp.outgoing_streams: 10 net.inet.sctp.add_more_on_output: 1452 net.inet.sctp.path_pf_threshold: 65535 net.inet.sctp.path_rtx_max: 5 net.inet.sctp.assoc_rtx_max: 10 net.inet.sctp.init_rtx_max: 8 net.inet.sctp.valid_cookie_life: 60000 net.inet.sctp.init_rto_max: 60000 net.inet.sctp.rto_initial: 3000 net.inet.sctp.rto_min: 1000 net.inet.sctp.rto_max: 60000 net.inet.sctp.secret_lifetime: 3600 net.inet.sctp.shutdown_guard_time: 180 net.inet.sctp.pmtu_raise_time: 600 net.inet.sctp.heartbeat_interval: 30000 net.inet.sctp.asoc_resource: 10 net.inet.sctp.sys_resource: 1000 net.inet.sctp.sack_freq: 2 net.inet.sctp.delayed_sack_time: 200 net.inet.sctp.chunkscale: 10 net.inet.sctp.min_split_point: 2904 net.inet.sctp.pcbhashsize: 256 net.inet.sctp.tcbhashsize: 1024 net.inet.sctp.maxchunks: 3200 net.inet.sctp.fr_maxburst: 4 net.inet.sctp.maxburst: 4 net.inet.sctp.peer_chkoh: 256 net.inet.sctp.strict_sacks: 1 net.inet.sctp.ecn_enable: 1 net.inet.sctp.auto_asconf: 1 net.inet.sctp.recvspace: 1864135 net.inet.sctp.sendspace: 1864135 net.inet.raw.recvspace: 9216 net.inet.raw.maxdgram: 9216 net.inet.accf.unloadable: 0 net.inet.accf.http.parsehttpversion: 1 net.link.generic.system.ifcount: 8 net.link.ether.inet.log_arp_permanent_modify: 1 net.link.ether.inet.log_arp_movements: 1 net.link.ether.inet.log_arp_wrong_iface: 1 net.link.ether.inet.maxhold: 1 net.link.ether.inet.wait: 20 net.link.ether.inet.proxyall: 0 net.link.ether.inet.useloopback: 1 net.link.ether.inet.maxtries: 5 net.link.ether.inet.max_age: 1200 net.link.ether.ipfw: 0 net.link.vlan.soft_pad: 0 net.link.gif.parallel_tunnels: 0 net.link.gif.max_nesting: 1 net.link.log_link_state_change: 1 net.link.ifqmaxlen: 50 net.link.tun.devfs_cloning: 1 net.inet6.ip6.forwarding: 0 net.inet6.ip6.redirect: 1 net.inet6.ip6.hlim: 64 net.inet6.ip6.maxfragpackets: 16384 net.inet6.ip6.accept_rtadv: 0 net.inet6.ip6.keepfaith: 0 net.inet6.ip6.log_interval: 5 net.inet6.ip6.hdrnestlimit: 15 net.inet6.ip6.dad_count: 1 net.inet6.ip6.auto_flowlabel: 1 net.inet6.ip6.defmcasthlim: 1 net.inet6.ip6.gifhlim: 30 net.inet6.ip6.kame_version: FreeBSD net.inet6.ip6.use_deprecated: 1 net.inet6.ip6.rr_prune: 5 net.inet6.ip6.v6only: 1 net.inet6.ip6.rtexpire: 3600 net.inet6.ip6.rtminexpire: 10 net.inet6.ip6.rtmaxcache: 128 net.inet6.ip6.use_tempaddr: 1 net.inet6.ip6.temppltime: 86400 net.inet6.ip6.tempvltime: 604800 net.inet6.ip6.auto_linklocal: 0 net.inet6.ip6.prefer_tempaddr: 1 net.inet6.ip6.use_defaultzone: 0 net.inet6.ip6.maxfrags: 16384 net.inet6.ip6.mcast_pmtu: 0 net.inet6.ip6.no_radr: 0 net.inet6.ip6.norbit_raif: 0 net.inet6.ip6.rfc6204w3: 0 net.inet6.ip6.mcast.loop: 1 net.inet6.ip6.mcast.maxsocksrc: 128 net.inet6.ip6.mcast.maxgrpsrc: 512 net.inet6.icmp6.rediraccept: 0 net.inet6.icmp6.redirtimeout: 600 net.inet6.icmp6.nd6_prune: 1 net.inet6.icmp6.nd6_delay: 5 net.inet6.icmp6.nd6_umaxtries: 3 net.inet6.icmp6.nd6_mmaxtries: 3 net.inet6.icmp6.nd6_useloopback: 1 net.inet6.icmp6.nodeinfo: 0 net.inet6.icmp6.errppslimit: 100 net.inet6.icmp6.nd6_maxnudhint: 0 net.inet6.icmp6.nd6_debug: 0 net.inet6.icmp6.nd6_maxqueuelen: 1 net.inet6.icmp6.nd6_onlink_ns_rfc4861: 0 net.inet6.mld.use_allow: 1 net.inet6.mld.v1enable: 1 net.inet6.mld.gsrdelay: 10 net.bpf.zerocopy_enable: 0 net.bpf.maxinsns: 512 net.bpf.maxbufsize: 524288 net.bpf.bufsize: 4096 net.ifdescr_maxlen: 1024 net.isr.numthreads: 1 net.isr.maxprot: 16 net.isr.defaultqlimit: 256 net.isr.maxqlimit: 10240 net.isr.bindthreads: 0 net.isr.maxthreads: 1 net.isr.direct: 0 net.isr.direct_force: 0 net.isr.dispatch: direct net.raw.recvspace: 8192 net.raw.sendspace: 8192 net.my_fibnum: 0 net.add_addr_allfibs: 1 net.fibs: 1 net.route.netisr_maxqlen: 256 net.wlan.cac_timeout: 60 net.wlan.nol_timeout: 1800 net.wlan.debug: 0 net.wlan.addba_maxtries: 3 net.wlan.addba_backoff: 10000 net.wlan.addba_timeout: 250 net.wlan.recv_bar: 1 net.wlan.ampdu_age: 500 net.wlan.hwmp.inact: 5000 net.wlan.hwmp.rannint: 1000 net.wlan.hwmp.rootint: 2000 net.wlan.hwmp.roottimeout: 5000 net.wlan.hwmp.pathlifetime: 5000 net.wlan.hwmp.replyforward: 1 net.wlan.hwmp.targetonly: 0 net.wlan.mesh.maxretries: 2 net.wlan.mesh.confirmtimeout: 40 net.wlan.mesh.holdingtimeout: 40 net.wlan.mesh.retrytimeout: 40
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