Network bandwidth in root domain seems limited

[KevinLai]

Yum updates in the physical machine seem slow.

[KevinLai]

More information about the problem: Using scp:

tycoon-70-21 to tycoon-70-22: 500Kb/s tycoon-70-22 to tycoon-70-21: 500Kb/s

tycoon-70-21 to wireless: 3Mb/s wireless to tycoon-70-21: 8Mb/s

tycoon-70-21 to village: 1.5Mb/s village to tycoon-70-21: 1.5Mb/s

The results are the same using http.

[KevinLai]

David tested with a crossover cable, which seems to implicate some in the host OS as being the limiter rather than the switch.

Tycoon-70-20:


------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
[  4] local 204.123.32.50 port 5001 connected with 204.123.32.52 port 38584
[  4]  0.0-10.4 sec    800 KBytes    628 Kbits/sec
[  4] local 204.123.32.50 port 5001 connected with 204.123.32.52 port 38585
[  4]  0.0-10.5 sec    776 KBytes    607 Kbits/sec
[  4] local 204.123.32.50 port 5001 connected with 204.123.32.52 port 46620
[  4]  0.0-10.2 sec    784 KBytes    627 Kbits/sec


Tycoon-70-22:

------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
[  4] local 204.123.32.52 port 5001 connected with 204.123.32.50 port 54631
[  4]  0.0-10.5 sec    808 KBytes    633 Kbits/sec
[  4] local 204.123.32.52 port 5001 connected with 204.123.32.50 port 54632
[  4]  0.0-10.5 sec    776 KBytes    607 Kbits/sec
[  4] local 204.123.32.52 port 5001 connected with 204.123.32.50 port 54633
[  4]  0.0-10.2 sec    784 KBytes    628 Kbits/sec

[KevinLai]

This is caused by the following:

/sbin/tc qdisc del dev xenbr0 handle ffff: ingress

[KevinLai]

This was fixed by the upgrade to CentOS