To answer your questios:
1. network is Intranet not internet.
2. servers CPU and I/O are very light. We did use "sar -u" and sar -b to check.
3. is NOT only one server has this network slow problem. at least 4 to 5 servers on that rack all report slow. it is NOT possible all servers on that rack are all heavy load.
--- 11/3/28 (一)，Emmanuel Noobadmin centos.admin@gmail.com 寫道：
寄件者: Emmanuel Noobadmin centos.admin@gmail.com 主旨: Re: [CentOS] centos server network speed check??? 收件者: "CentOS mailing list" centos@centos.org 日期: 2011年3月28日,一,下午5:45 On 3/29/11, mcclnx mcc mcclnx@yahoo.com.tw wrote:
we have several servers on same rack and servers are
all inside firewall.
Centos version from 4.X to 5.X. sometime the
connection are very slow
(compare to servers on other racks also inside
firewall).
we discuss with network engineer he ask us use "ping"
and traceroute" to
check. Both tools response time are good but if
we connect through
application like Web browser, database, or DELL OPMN
tool. The response
time is very very slow.
Are you connecting to the servers from within the same network/building or via Internet?
If the ping times are good, it could be the servers are too heavily loaded, whether due to too many users or inefficient applications. So they would respond very slowly to requests although there is no network problem. _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos