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AIX 5L 网络性能优化 : 第 3 部分

 2008-11-10 08:27:19 来源:WEB开发网   
核心提示: 上面的输出说明,内核并没有丢弃任何数据包,AIX 5L 网络性能优化 : 第 3 部分(5),这是很好的情况,优化网络性能在这个部分中,no 命令是优化网络参数的最重要的命令,首先,您将了解如何使用 no 命令来优化您的网络子系统,您还将了解可能影响网络性能的一些其他方面

上面的输出说明,内核并没有丢弃任何数据包,这是很好的情况。

优化网络性能

在这个部分中,您将了解如何使用 no 命令来优化您的网络子系统。您还将了解可能影响网络性能的一些其他方面,并且您将了解在适当情况下的建议优化方法。

no 命令是优化网络参数的最重要的命令。首先,使用 -a 标志查看所有的参数(请参见清单 7)。

清单 7. 查看参数

root@lpar37p682e[/] > no -a
         arpqsize = 12
        arpt_killc = 20
       arptab_bsiz = 7
        arptab_nb = 149
        bcastping = 0
   clean_partial_conns = 0
         delayack = 0
      delayackports = {}
     dgd_packets_lost = 3
      dgd_ping_time = 5
      dgd_retry_time = 5
    directed_broadcast = 0
     extendednetstats = 0
         fasttimo = 200
    icmp6_errmsg_rate = 10
     icmpaddressmask = 0
ie5_old_multicast_mapping = 0
          ifsize = 256
     inet_stack_size = 16
        ip6_defttl = 64
        ip6_prune = 1
      ip6forwarding = 0
    ip6srcrouteforward = 1
    ip_ifdelete_notify = 0
         ip_nfrag = 200
       ipforwarding = 0
        ipfragttl = 2
    ipignoreredirects = 0
        ipqmaxlen = 100
     ipsendredirects = 1
    ipsrcrouteforward = 1
      ipsrcrouterecv = 0
      ipsrcroutesend = 1
     llsleep_timeout = 3
         lo_perf = 1
        lowthresh = 90
         main_if6 = 0
        main_site6 = 0
         maxnip6q = 20
          maxttl = 255
        medthresh = 95
        mpr_policy = 1
       multi_homed = 1
        nbc_limit = 262144
      nbc_max_cache = 131072
      nbc_min_cache = 1
     nbc_ofile_hashsz = 12841
         nbc_pseg = 0
      nbc_pseg_limit = 524288
      ndd_event_name = {all}
    ndd_event_tracing = 0
      ndp_mmaxtries = 3
      ndp_umaxtries = 3
         ndpqsize = 50
        ndpt_down = 3
        ndpt_keep = 120
        ndpt_probe = 5
      ndpt_reachable = 30
       ndpt_retrans = 1
       net_buf_size = {all}
       net_buf_type = {all}
    net_malloc_police = 0
      nonlocsrcroute = 0
         nstrpush = 8
       passive_dgd = 0
     pmtu_default_age = 10
       pmtu_expire = 10
pmtu_rediscover_interval = 30
       psebufcalls = 20
         psecache = 1
       pseintrstack = 24576
        psetimers = 20
      rfc1122addrchk = 0
         rfc1323 = 0
         rfc2414 = 1
       route_expire = 1
     routerevalidate = 0
         rto_high = 64
        rto_length = 13
        rto_limit = 7
         rto_low = 1
           sack = 0
          sb_max = 1048576
    send_file_duration = 300
       site6_index = 0
        sockthresh = 85
         sodebug = 0
       sodebug_env = 0
        somaxconn = 1024
         strctlsz = 1024
         strmsgsz = 0
        strthresh = 85
        strturncnt = 15
     subnetsarelocal = 1
    tcp_bad_port_limit = 0
         tcp_ecn = 0
    tcp_ephemeral_high = 65535
    tcp_ephemeral_low = 32768
       tcp_finwait2 = 1200
      tcp_icmpsecure = 0
     tcp_init_window = 0
  tcp_inpcb_hashtab_siz = 24499
       tcp_keepcnt = 8
       tcp_keepidle = 14400
       tcp_keepinit = 150
      tcp_keepintvl = 150
   tcp_limited_transmit = 1
       tcp_low_rto = 0
       tcp_maxburst = 0
       tcp_mssdflt = 1460
     tcp_nagle_limit = 65535
    tcp_nagleoverride = 0
        tcp_ndebug = 100
       tcp_newreno = 1
      tcp_nodelayack = 0
    tcp_pmtu_discover = 1
      tcp_recvspace = 16384
      tcp_sendspace = 16384
      tcp_tcpsecure = 0
       tcp_timewait = 1
         tcp_ttl = 60
      tcprexmtthresh = 3
         thewall = 1048576
     timer_wheel_tick = 0
    udp_bad_port_limit = 0
    udp_ephemeral_high = 65535
    udp_ephemeral_low = 32768
  udp_inpcb_hashtab_siz = 24499
    udp_pmtu_discover = 1
      udp_recvspace = 42080
      udp_sendspace = 9216
         udp_ttl = 30
         udpcksum = 1
         use_isno = 1
      use_sndbufpool = 1

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Tags:AIX 网络 性能

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