Bandwidth utilization is more than max speed
Ethtool shows max speed is 1Gb/s. But in glances/SAR results in more than 1.7Gb/s.
Can somebody clarify this...
# ethtool ethX | grep -i speed
Speed : 1000Mb/s
there is no dropped packets till now:
# cat /sys/class/net/ethX/statistics/tx_dropped
0
RX packets:159025710994 errors:0 dropped:0 overruns:36682 frame:0
TX packets:121415304749 errors:0 dropped:0 overruns:0 carrier:0
Note: Bonding is not configured
centos bandwidth
asked Feb 28 at 19:45
msp9011msp9011
4,44344167
add a comment |
Ethtool shows max speed is 1Gb/s. But in glances/SAR results in more than 1.7Gb/s.
Can somebody clarify this...
# ethtool ethX | grep -i speed
Speed : 1000Mb/s
there is no dropped packets till now:
# cat /sys/class/net/ethX/statistics/tx_dropped
0
RX packets:159025710994 errors:0 dropped:0 overruns:36682 frame:0
TX packets:121415304749 errors:0 dropped:0 overruns:0 carrier:0
Note: Bonding is not configured
centos bandwidth
asked Feb 28 at 19:45
msp9011msp9011
4,44344167
Is the UDP traffic you are feeding meaningful or just trying to overload it?
– Rui F Ribeiro
Feb 28 at 20:10
can you showtxdrops/s?
– Rui F Ribeiro
Feb 28 at 20:44
can we see tx_dropped while Tx/s is showing 1.7Gbps?
– Rui F Ribeiro
Feb 28 at 21:36
@RuiFRibeiro plz check my edit
– msp9011
Feb 28 at 22:42
add a comment |
Ethtool shows max speed is 1Gb/s. But in glances/SAR results in more than 1.7Gb/s.
Can somebody clarify this...
# ethtool ethX | grep -i speed
Speed : 1000Mb/s
there is no dropped packets till now:
# cat /sys/class/net/ethX/statistics/tx_dropped
0
RX packets:159025710994 errors:0 dropped:0 overruns:36682 frame:0
TX packets:121415304749 errors:0 dropped:0 overruns:0 carrier:0
Note: Bonding is not configured
centos bandwidth
asked Feb 28 at 19:45
msp9011msp9011
4,44344167
Ethtool shows max speed is 1Gb/s. But in glances/SAR results in more than 1.7Gb/s.
Can somebody clarify this...
# ethtool ethX | grep -i speed
Speed : 1000Mb/s
there is no dropped packets till now:
# cat /sys/class/net/ethX/statistics/tx_dropped
0
RX packets:159025710994 errors:0 dropped:0 overruns:36682 frame:0
TX packets:121415304749 errors:0 dropped:0 overruns:0 carrier:0
Note: Bonding is not configured
centos bandwidth
centos bandwidth
asked Feb 28 at 19:45
msp9011msp9011
4,44344167
asked Feb 28 at 19:45
msp9011msp9011
4,44344167
edited Mar 5 at 9:44
msp9011
asked Feb 28 at 19:45
msp9011msp9011
4,44344167
asked Feb 28 at 19:45
msp9011msp9011
4,44344167
asked Feb 28 at 19:45
msp9011msp9011
4,44344167
4,44344167
Is the UDP traffic you are feeding meaningful or just trying to overload it?
– Rui F Ribeiro
Feb 28 at 20:10
can you showtxdrops/s?
– Rui F Ribeiro
Feb 28 at 20:44
can we see tx_dropped while Tx/s is showing 1.7Gbps?
– Rui F Ribeiro
Feb 28 at 21:36
@RuiFRibeiro plz check my edit
– msp9011
Feb 28 at 22:42
add a comment |
Is the UDP traffic you are feeding meaningful or just trying to overload it?
– Rui F Ribeiro
Feb 28 at 20:10
can you showtxdrops/s?
– Rui F Ribeiro
Feb 28 at 20:44
can we see tx_dropped while Tx/s is showing 1.7Gbps?
– Rui F Ribeiro
Feb 28 at 21:36
@RuiFRibeiro plz check my edit
– msp9011
Feb 28 at 22:42
Is the UDP traffic you are feeding meaningful or just trying to overload it?
– Rui F Ribeiro
Feb 28 at 20:10
Is the UDP traffic you are feeding meaningful or just trying to overload it?
– Rui F Ribeiro
Feb 28 at 20:10
can you show
txdrops/s?– Rui F Ribeiro
Feb 28 at 20:44
can you show
txdrops/s?– Rui F Ribeiro
Feb 28 at 20:44
can we see tx_dropped while Tx/s is showing 1.7Gbps?
– Rui F Ribeiro
Feb 28 at 21:36
can we see tx_dropped while Tx/s is showing 1.7Gbps?
– Rui F Ribeiro
Feb 28 at 21:36
@RuiFRibeiro plz check my edit
– msp9011
Feb 28 at 22:42
@RuiFRibeiro plz check my edit
– msp9011
Feb 28 at 22:42
add a comment |
1 Answer
1
active
oldest
votes
Quite simply having a larger value than the capacity of an interface on the output side, does not mean the interface is sending all that traffic; it means however you are trying to send all that traffic and overloading at least the interface.
Most of the extra traffic will be dropped. Have a look at the overrun value.
If the capacity of the interface is exceeded, the frame that is
currently being received is dropped and the overrun counter is
incremented.
PS Having a SCP doing this does not match much the behaviour of a TCP based application, and much less SCP, which is known for being slow. It seems much more typical of a UDP based/multicasting/torrent based application. I strongly suspect something is being overlooked.
answered Mar 1 at 17:42
Rui F RibeiroRui F Ribeiro
41.6k1483141
Has the destination a 10Gbps interface or is a jumbo-enabled interface/network?
– Rui F Ribeiro
Mar 2 at 18:01
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Quite simply having a larger value than the capacity of an interface on the output side, does not mean the interface is sending all that traffic; it means however you are trying to send all that traffic and overloading at least the interface.
Most of the extra traffic will be dropped. Have a look at the overrun value.
If the capacity of the interface is exceeded, the frame that is
currently being received is dropped and the overrun counter is
incremented.
PS Having a SCP doing this does not match much the behaviour of a TCP based application, and much less SCP, which is known for being slow. It seems much more typical of a UDP based/multicasting/torrent based application. I strongly suspect something is being overlooked.
answered Mar 1 at 17:42
Rui F RibeiroRui F Ribeiro
41.6k1483141
Has the destination a 10Gbps interface or is a jumbo-enabled interface/network?
– Rui F Ribeiro
Mar 2 at 18:01
add a comment |
Quite simply having a larger value than the capacity of an interface on the output side, does not mean the interface is sending all that traffic; it means however you are trying to send all that traffic and overloading at least the interface.
Most of the extra traffic will be dropped. Have a look at the overrun value.
If the capacity of the interface is exceeded, the frame that is
currently being received is dropped and the overrun counter is
incremented.
PS Having a SCP doing this does not match much the behaviour of a TCP based application, and much less SCP, which is known for being slow. It seems much more typical of a UDP based/multicasting/torrent based application. I strongly suspect something is being overlooked.
answered Mar 1 at 17:42
Rui F RibeiroRui F Ribeiro
41.6k1483141
Has the destination a 10Gbps interface or is a jumbo-enabled interface/network?
– Rui F Ribeiro
Mar 2 at 18:01
add a comment |
Quite simply having a larger value than the capacity of an interface on the output side, does not mean the interface is sending all that traffic; it means however you are trying to send all that traffic and overloading at least the interface.
Most of the extra traffic will be dropped. Have a look at the overrun value.
If the capacity of the interface is exceeded, the frame that is
currently being received is dropped and the overrun counter is
incremented.
PS Having a SCP doing this does not match much the behaviour of a TCP based application, and much less SCP, which is known for being slow. It seems much more typical of a UDP based/multicasting/torrent based application. I strongly suspect something is being overlooked.
answered Mar 1 at 17:42
Rui F RibeiroRui F Ribeiro
41.6k1483141
Quite simply having a larger value than the capacity of an interface on the output side, does not mean the interface is sending all that traffic; it means however you are trying to send all that traffic and overloading at least the interface.
Most of the extra traffic will be dropped. Have a look at the overrun value.
If the capacity of the interface is exceeded, the frame that is
currently being received is dropped and the overrun counter is
incremented.
PS Having a SCP doing this does not match much the behaviour of a TCP based application, and much less SCP, which is known for being slow. It seems much more typical of a UDP based/multicasting/torrent based application. I strongly suspect something is being overlooked.
answered Mar 1 at 17:42
Rui F RibeiroRui F Ribeiro
41.6k1483141
edited Mar 2 at 17:52
answered Mar 1 at 17:42
Rui F RibeiroRui F Ribeiro
41.6k1483141
answered Mar 1 at 17:42
Rui F RibeiroRui F Ribeiro
41.6k1483141
answered Mar 1 at 17:42
Rui F RibeiroRui F Ribeiro
41.6k1483141
41.6k1483141
Has the destination a 10Gbps interface or is a jumbo-enabled interface/network?
– Rui F Ribeiro
Mar 2 at 18:01
add a comment |
Has the destination a 10Gbps interface or is a jumbo-enabled interface/network?
– Rui F Ribeiro
Mar 2 at 18:01
Has the destination a 10Gbps interface or is a jumbo-enabled interface/network?
– Rui F Ribeiro
Mar 2 at 18:01
Has the destination a 10Gbps interface or is a jumbo-enabled interface/network?
– Rui F Ribeiro
Mar 2 at 18:01
add a comment |
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Is the UDP traffic you are feeding meaningful or just trying to overload it?
– Rui F Ribeiro
Feb 28 at 20:10
can you show
txdrops/s?– Rui F Ribeiro
Feb 28 at 20:44
can we see tx_dropped while Tx/s is showing 1.7Gbps?
– Rui F Ribeiro
Feb 28 at 21:36
@RuiFRibeiro plz check my edit
– msp9011
Feb 28 at 22:42