iptraf
好用 yum
install iptraf
iptraf is an ncurses-based IP LAN monitor that generates
various network statistics including TCP info, UDP counts, ICMP and OSPF
information, Ethernet，load info, node stats, IP checksum errors, and others.If
the command is issued without any command-line options, the program comes up in
interactive mode, with the various facilities accessed through
the main menu.
nload 不自带
简单直观
wget http://www.roland-riegel.de/nload/nload-0.7.2.tar.gz
tar
zxvf nload-0.7.2.tar.gz
cd nload-0.7.2
./configure;make;make
install
使用
直接用nload回车即可,也可以指定网卡,如nload eth1
还可以指定是以K或M来显示流量,如nload -u
M显示的流量是以MB为单位的
看看还有哪些参数或选项
[root@wdlinux ~]# nload -u K
[root@wdlinux
~]# nload -h
ifstat 不自带
简单直观
Ifstat is a little tool to report interface activity, just like
iostat/vmstat do for other system statistics.
ifstat gathers these statistics
from the kernel internal counters, which is highly operating system
dependent.Right now, the following systems are supported:
Linux >= 2.2.0 (through /proc/net/dev file).
FreeBSD
>= 2.2 (using the ifmib(4) interface).
Solaris >=
5.6 (using the kstat(3K) interface).
IRIX and OpenBSD
(using the SIOCGIFDATA ioctl).
NetBSD and Darwin (using
the route(4) sysctl interface).
Other BSDs (using the
kvm(3) interface).
Digital Unix (OSF/1), Tru64, and Aix
(using the legacy kmem interface).
HP-UX (using the DPLI
streams interface).
Win32 native or through Cygwin (using
the GetIfTable call).
wget -S
http://gael.roualland.free.fr/ifstat/ifstat-1.1.tar.gz
tar zxvf
ifstat-1.1.tar.gz
cd ifstat-1.1
./configure
make；make
install
ifstat
iftop 不自带
wget -S http://www.ex-parrot.com/~pdw/iftop/download/iftop-0.17.tar.gz
tar
zxvf iftop-0.17.tar.gz
cd
iftop-0.17
./configure make；make
install
使用
iftop -i eth1 -B
iftop -i eth2 -B -m 30M
iftop -n -i
eth1
http://jiajun.iteye.com/blog/419515
watch ifconfig
watch more
/proc/net/dev
watch -n 1 "/sbin/ifconfig eth0 | grep bytes"
ulimit -n
[root@CactiEZ ~]# netstat -s
[root@CactiEZ ~]# sar -n DEV
1
[root@CactiEZ ~]# sar -n EDEV 1 2
-n参数很有用，他有6个不同的开关：DEV | EDEV | NFS |
NFSD | SOCK | ALL
。
DEV显示网络接口信息，EDEV显示关于网络错误的统计数据，NFS统计活动的NFS客户端的信息，NFSD统计NFS服务器的信息，SOCK显示套接字信息，ALL显示所有5个开关。它们可以单独或者一起使用。
rxerr/s：每秒钟接收的坏数据包
txerr/s：每秒钟发送的坏数据包 coll/s：每秒冲突数
rxdrop/s：因为缓冲充满，每秒钟丢弃的已接收数据包数
txdrop/s：因为缓冲充满，每秒钟丢弃的已发送数据包数
txcarr/s：发送数据包时，每秒载波错误数
rxfram/s：每秒接收数据包的帧对齐错误数
rxfifo/s：接收的数据包每秒FIFO过速的错误数
txfifo/s：发送的数据包每秒FIFO过速的错误数