ping的结果分析，高手请不吝赐教

tonytian2008

我有两台solaris10的机器，我怀疑一台的网卡有问题或连向的交换机有问题，所以我在两台机器上ping同一台机器，结果是这样的：\r\n第一台，返回时间都比较均衡\r\n64 bytes from 172.23.212.104: icmp_seq=244. time=0.725 ms\r\n64 bytes from 172.23.212.104: icmp_seq=245. time=0.735 ms\r\n64 bytes from 172.23.212.104: icmp_seq=246. time=0.704 ms\r\n64 bytes from 172.23.212.104: icmp_seq=247. time=0.676 ms\r\n64 bytes from 172.23.212.104: icmp_seq=248. time=0.675 ms\r\n64 bytes from 172.23.212.104: icmp_seq=249. time=0.640 ms\r\n64 bytes from 172.23.212.104: icmp_seq=250. time=0.683 ms\r\n64 bytes from 172.23.212.104: icmp_seq=251. time=0.608 ms\r\n64 bytes from 172.23.212.104: icmp_seq=252. time=0.634 ms\r\n\r\n第二台，总是会有些大的时间返回\r\n64 bytes from 172.23.212.104: icmp_seq=321. time=10.2 ms\r\n64 bytes from 172.23.212.104: icmp_seq=322. time=0.771 ms\r\n64 bytes from 172.23.212.104: icmp_seq=323. time=0.614 ms\r\n64 bytes from 172.23.212.104: icmp_seq=324. time=0.707 ms\r\n64 bytes from 172.23.212.104: icmp_seq=325. time=0.582 ms\r\n64 bytes from 172.23.212.104: icmp_seq=326. time=13.8 ms\r\n64 bytes from 172.23.212.104: icmp_seq=327. time=0.598 ms\r\n64 bytes from 172.23.212.104: icmp_seq=328. time=0.680 ms\r\n64 bytes from 172.23.212.104: icmp_seq=329. time=49.4 ms\r\n\r\n请问是什么问题啊，使网卡的问题么？\r\n并且如果这样的话，第二台机器在传输大的数据量时，会不会丢包阿？\r\n\r\n谢谢

briangao

Are these two machines on the same subnet? The most common cause of this kind of problem is traffic congestion. If you have busy network traffic time to time, you will see ping time increase. If these two machines are on the same subnet, then it is possible that the machine\'s CPU is periodically busy and can\'t handle the ping in the timely manner.

tonytian2008

是的，这两台机器在同一个网段，而且连着同一个机器

tonytian2008

我用prstat看了一下系统资源使用情况，发现基本没有费什么资源，是不是问题出在网卡上啊，我在那台ping不稳定的机器上运行程序，会发现有时候会丢包，不知道是不是网卡的硬件故障，请问有方法可以检查网卡状态么？

briangao

How about speed and duplex setting?  Are they the same on both machines and switch ? \r\n

不知道是不是网卡的硬件故障

Could be faulty cable and NIC as well. You can change the cable easily.

tonytian2008

cable的问题应该能够排除，因为我互换过两台机器和交互机的cable，不知道怎么判断NIC的好坏呢？ 谢谢斑竹大人的解答：）

tonytian2008

谢谢斑竹，我准备明天换一块网卡试试