分类： LINUX
2008-04-27 23:15:36
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声明 作者 说明 --------------------------------------------------------------------------------------------------- /proc/net子目录 此目录下的文件描述或修改了联网代码的行为。可以通过使用arp,netstat,route和ipfwadm命令设置或查询这些特殊文件中的许多文件。 示例： [root@localhost /]# ls /proc/net anycast6 ip_conntrack mcfilter6 rt6_stats tcp arp ip_conntrack_expect netlink rt_acct tcp6 dev ip_mr_cache netstat rt_cache udp dev_mcast ip_mr_vif packet snmp udp6 dev_snmp6 ip_tables_matches psched snmp6 unix if_inet6 ip_tables_names raw sockstat wireless igmp ip_tables_targets raw6 sockstat6 igmp6 ipv6_route route softnet_stat ip6_flowlabel mcfilter rpc stat -------------------------------------------------------------------------------- 以下摘要介绍此目录下文件的功能： arp 转储每个网络接口的arp表中dev包的统计 dev 来自网络设备的统计 dev_mcast 列出二层（数据链路层）多播组 igmp 加入的IGMP多播组 netlink netlink套接口的信息 netstat 网络流量的多种统计。第一行是信息头，带有每个变量的名称。接下来的一行保存相应变量的值 raw 原始套接口的套接口表 route 静态路由表 rpc 包含RPC信息的目录 rt_cache 路由缓冲 snmp snmp agent的ip/icmp/tcp/udp协议统计；各行交替给出字段名和值 sockstat 列出使用的tcp/udp/raw/pac/syc_cookies的数量 tcp TCP连接的套接口 udp UDP连接的套接口表 unix UNIX域套接口的套接口表 -------------------------------------------------------------------------------- 示例： Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT eth0 0035C2DA 00000000 0001 0 0 0 80FFFFF0 eth0 0000FEA9 00000000 0001 0 0 0 0000FFF0 eth0 00000000 0135C2DA 0003 0 0 0 00000000 -------------------------------------------------------------------------------- [root@localhost /]# cat /proc/net/tcp sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode 0: 00000000:8000 00000000:0000 0A 00000000:00000000 00:00000000 00000000 29 0 9525 1 0dde7500 3000 0 0 2 -1 1: 00000000:006F 00000000:0000 0A 00000000:00000000 00:00000000 00000000 0 0 9484 1 0dde79e0 3000 0 0 2 -1 2: 0100007F:0277 00000000:0000 0A 00000000:00000000 00:00000000 00000000 0 0 10049 1 0a8e3a00 3000 0 0 2 -1 3: 0100007F:14D7 00000000:0000 0A 00000000:00000000 00:00000000 00000000 99 0 9847 1 0dde7020 3000 0 0 2 -1 4: 0100007F:0019 00000000:0000 0A 00000000:00000000 00:00000000 00000000 0 0 10286 1 0a8e3520 3000 0 0 2 -1 -------------------------------------------------------------------------------- [root@localhost /]# cat /proc/net/arp IP address HW type Flags HW address Mask Device 218.194.53.1 0x1 0x2 00:0D:BC:78:07:3F * eth0 -------------------------------------------------------------------------------- [root@localhost /]# cat /proc/net/udp sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode 0: 00000000:8000 00000000:0000 07 00000000:00000000 00:00000000 00000000 29 0 9520 2 0b4ef7c0 105: 00000000:14E9 00000000:0000 07 00000000:00000000 00:00000000 00000000 99 0 10284 2 0b4ef040 111: 00000000:006F 00000000:0000 07 00000000:00000000 00:00000000 00000000 0 0 9483 2 0b4efcc0 116: 00000000:02F4 00000000:0000 07 00000000:00000000 00:00000000 00000000 0 0 9511 2 0b4efa40 119: 00000000:0277 00000000:0000 07 00000000:00000000 00:00000000 00000000 0 0 10050 2 0b4ef2c0 -------------------------------------------------------------------------------- /proc/scsi子目录 此目录下包含一个列出了所有检测到的SCSI设备的文件，并且为每种控制器驱动程序提供一个目录，在这个目录下又为已安装的此种控制器的每个实例提供一个子目录。 示例： 由于本人的机器没有SCSI设备，顾暂时无法提供示例。 -------------------------------------------------------------------------------- /proc/sys子目录 在此目录下有许多子目录。此目录中的许多项都可以用来调整系统的性能。这个目录包含信息太多，无法介绍全部。只在示例中展示目录下的一些文件。 示例： debug dev fs kernel net proc sunrpc vm -------------------------------------------------------------------------------- [root@localhost ~]# ls /proc/sys/fs aio-max-nr dentry-state file-nr lease-break-time overflowgid aio-nr dir-notify-enable inode-nr leases-enable overflowuid binfmt_misc file-max inode-state mqueue quota -------------------------------------------------------------------------------- [root@localhost ~]# ls /proc/sys/kernel acct hotplug panic sem cad_pid modprobe panic_on_oops shmall cap-bound msgmax pid_max shmmax core_pattern msgmnb print-fatal-signals shmmni core_uses_pid msgmni printk sysrq ctrl-alt-del ngroups_max printk_ratelimit tainted domainname osrelease printk_ratelimit_burst threads-max exec-shield ostype pty vdso exec-shield-randomize overflowgid random version hostname overflowuid real-root-dev -------------------------------------------------------------------------------- [root@localhost ~]# ls /proc/sys/net core ethernet ipv4 ipv6 unix -------------------------------------------------------------------------------- [root@localhost sys]# ls /proc/sys/vm block_dump laptop_mode nr_pdflush_threads dirty_background_ratio legacy_va_layout overcommit_memory dirty_expire_centisecs lower_zone_protection overcommit_ratio dirty_ratio max_map_count page-cluster dirty_writeback_centisecs min_free_kbytes swappiness hugetlb_shm_group nr_hugepages vfs_cache_pressure -------------------------------------------------------------------------------- [root@localhost sys]# ls /proc/sys/net/ipv4 conf tcp_fack icmp_echo_ignore_all tcp_fin_timeout icmp_echo_ignore_broadcasts tcp_frto icmp_ignore_bogus_error_responses tcp_keepalive_intvl icmp_ratelimit tcp_keepalive_probes icmp_ratemask tcp_keepalive_time igmp_max_memberships tcp_low_latency igmp_max_msf tcp_max_orphans inet_peer_gc_maxtime tcp_max_syn_backlog inet_peer_gc_mintime tcp_max_tw_buckets inet_peer_maxttl tcp_mem inet_peer_minttl tcp_moderate_rcvbuf inet_peer_threshold tcp_no_metrics_save ip_autoconfig tcp_orphan_retries ip_conntrack_max tcp_reordering ip_default_ttl tcp_retrans_collapse ip_dynaddr tcp_retries1 ip_forward tcp_retries2 ipfrag_high_thresh tcp_rfc1337 ipfrag_low_thresh tcp_rmem ipfrag_secret_interval tcp_sack ipfrag_time tcp_stdurg ip_local_port_range tcp_synack_retries ip_nonlocal_bind tcp_syncookies ip_no_pmtu_disc tcp_syn_retries neigh tcp_timestamps netfilter tcp_tso_win_divisor route tcp_tw_recycle tcp_abort_on_overflow tcp_tw_reuse tcp_adv_win_scale tcp_vegas_alpha tcp_app_win tcp_vegas_beta tcp_bic tcp_vegas_cong_avoid tcp_bic_fast_convergence tcp_vegas_gamma tcp_bic_low_window tcp_westwood tcp_dsack tcp_window_scaling tcp_ecn tcp_wmem -------------------------------------------------------------------------------- [root@localhost sys]# cat /proc/sys/kernel/shmall 2097152 -------------------------------------------------------------------------------- [root@localhost sys]# cat /proc/sys/kernel/osrelease 2.6.9-1.667 -------------------------------------------------------------------------------- 总结： 本文出自 51CTO.COM技术博客 |
