[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

[K12OSN] iperf monitoring



Hello All,

Centos 6.3 32-bit 
SL 6.1 client root
LTSP 5.x


Would like opinions from anyone here on how you decypher an iperf
capture from my newly put together home server to a server at work.
I am just trying to get a better understanding in regards to some voip
problems I am experiencing since putting this server online.

Notes
1) This server has the integrated Realtek RTL8111e nic.(rev 06)
2) The second nic pci-e is also an RTL81111e           (rev 02)
3) The integrated nic (external nic)  will only negotiate at 100mb. If I
try and force via ethtool to 1000MB my net connection simply stops.
4) The two nics both use the native r8169 driver with the onboard nic
also showing a firmware as well and the pci-e nic does not show a
firmware being used?
5) On my Vonage phone now my voice quality is usable but is very
speradic,,for the listener. This never happened with my old server.
The Vonage phone does run 'behind' my LTSP server.
6) The mobo manufactuer does not show a firmware update for the onboard
nic. For some reason I think this is my voip problem as I have read many
older posts were users with Windows reported frequent network drops
using the Windows supplied driver for this embedded nic.

I know I should have gotten a mobo more Intel centric,,,:)

The below iperf capture is via a vpn connection so there is some
overhead involved here,but seeing how many 'dropped' readings there are
I assume I definaetly have a problem somewhere along the line.
I connected to three different servers at work,to try and get an
average.All results were very close to being the same.

#iperf run print out#

iperf -c 172.28.8.66 -i 1 -t 60
------------------------------------------------------------
Client connecting to 172.28.8.66, TCP port 5001
TCP window size: 21.6 KByte (default)
------------------------------------------------------------
[  3] local 172.31.100.254 port 37457 connected with 172.28.8.66 port
5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 1.0 sec   512 KBytes  4.19 Mbits/sec
[  3]  1.0- 2.0 sec   512 KBytes  4.19 Mbits/sec
[  3]  2.0- 3.0 sec   384 KBytes  3.15 Mbits/sec
[  3]  3.0- 4.0 sec   512 KBytes  4.19 Mbits/sec
[  3]  4.0- 5.0 sec   512 KBytes  4.19 Mbits/sec
[  3]  5.0- 6.0 sec   384 KBytes  3.15 Mbits/sec
[  3]  6.0- 7.0 sec   384 KBytes  3.15 Mbits/sec
[  3]  7.0- 8.0 sec   640 KBytes  5.24 Mbits/sec
[  3]  8.0- 9.0 sec   384 KBytes  3.15 Mbits/sec
[  3]  9.0-10.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 10.0-11.0 sec   256 KBytes  2.10 Mbits/sec
[  3] 11.0-12.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 12.0-13.0 sec   256 KBytes  2.10 Mbits/sec
[  3] 13.0-14.0 sec  1.00 MBytes  8.39 Mbits/sec
[  3] 14.0-15.0 sec  0.00 Bytes  0.00 bits/sec
[  3] 15.0-16.0 sec   384 KBytes  3.15 Mbits/sec
[  3] 16.0-17.0 sec   384 KBytes  3.15 Mbits/sec
[  3] 17.0-18.0 sec   384 KBytes  3.15 Mbits/sec
[  3] 18.0-19.0 sec   384 KBytes  3.15 Mbits/sec
[  3] 19.0-20.0 sec   256 KBytes  2.10 Mbits/sec
[  3] 20.0-21.0 sec  1.12 MBytes  9.44 Mbits/sec
[  3] 21.0-22.0 sec   384 KBytes  3.15 Mbits/sec
[  3] 22.0-23.0 sec  0.00 Bytes  0.00 bits/sec
[  3] 23.0-24.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 24.0-25.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 25.0-26.0 sec   384 KBytes  3.15 Mbits/sec
[  3] 26.0-27.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 27.0-28.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 28.0-29.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 29.0-30.0 sec   384 KBytes  3.15 Mbits/sec
[  3] 30.0-31.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 31.0-32.0 sec  0.00 Bytes  0.00 bits/sec
[  3] 32.0-33.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 33.0-34.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 34.0-35.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 35.0-36.0 sec  0.00 Bytes  0.00 bits/sec
[  3] 36.0-37.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 37.0-38.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 38.0-39.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 39.0-40.0 sec  0.00 Bytes  0.00 bits/sec
[  3] 40.0-41.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 41.0-42.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 42.0-43.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 43.0-44.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 44.0-45.0 sec  0.00 Bytes  0.00 bits/sec
[  3] 45.0-46.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 46.0-47.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 47.0-48.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 48.0-49.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 49.0-50.0 sec  0.00 Bytes  0.00 bits/sec
[  3] 50.0-51.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 51.0-52.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 52.0-53.0 sec  0.00 Bytes  0.00 bits/sec
[  3] 53.0-54.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 54.0-55.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 55.0-56.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 56.0-57.0 sec   512 KBytes  4.19 Mbits/sec
[  3] 57.0-58.0 sec  0.00 Bytes  0.00 bits/sec
[  3] 58.0-59.0 sec   640 KBytes  5.24 Mbits/sec
[  3] 59.0-60.0 sec   512 KBytes  4.19 Mbits/sec
[  3]  0.0-60.7 sec  26.1 MBytes  3.61 Mbits/sec

Thank You,
Barry





[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]