I'm having these strange network latency, crawling speed issues on a couple of Dell R610 servers I have. I have multiple other R610's with same specs, connected to the same Cisco 3750 switch and they're fine. I've done a lot of troubleshooting and still cannot fix the problem. I would appreciate help here. My observium shows no spikes on my network or aggressive traffic on any other server that would cause some bottle-necking of any kind.
1. Tried replacement NIC cards
2. Tried multiple ports on server NIC and Cisco switch
3. Tried Centos 6.8 and Centos 7
4. Upgraded NIC drivers via Dell OMSA
5. Replaced Cat5 cables
6. Rebooted Servers
7. GigE enabled on server and Cisco switch, full duplex
8. Tried both Google resolvers and data center resolvers
Public speed test though are so slow
Installed Dell OMSA this way:
1. Tried replacement NIC cards
2. Tried multiple ports on server NIC and Cisco switch
3. Tried Centos 6.8 and Centos 7
4. Upgraded NIC drivers via Dell OMSA
5. Replaced Cat5 cables
6. Rebooted Servers
7. GigE enabled on server and Cisco switch, full duplex
8. Tried both Google resolvers and data center resolvers
Public speed test though are so slow
Code:
[root@localhost ~]# wget -O /dev/null http://cachefly.cachefly.net/100mb.test
--2016-07-05 13:32:59-- http://cachefly.cachefly.net/100mb.test
Resolving cachefly.cachefly.net (cachefly.cachefly.net)... 205.234.175.175
Connecting to cachefly.cachefly.net (cachefly.cachefly.net)|205.234.175.175|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 104857600 (100M) [application/octet-stream]
Saving to: ‘/dev/null’
0% [ ] 162,475 24.4KB/s eta 73m 24s
Code:
INSTALL Dell System Update (DSU) AND OpenManage Server Administrator
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yum install perl wget -y
wget -q -O - https://linux.dell.com/repo/hardware/dsu/bootstrap.cgi | bash
yum install dell-system-update -y
yum install srvadmin-all -y
/opt/dell/srvadmin/sbin/srvadmin-services.sh start
dsu -u