AIX 5L 网络性能优化 : 第 3 部分
2008-11-10 08:27:19 来源:WEB开发网上面的输出说明,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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