W dniu 2010-11-18 13:42, Schvberle Daniel pisze:

quoted text
>> So the conclusion might be:
>> - there is problem with my Intel NIC model/cheapset
>> - there is problem with em driver
>> - there is problem with my hardware (I need serwer motherboard with pcie
>> and pci 64bit 66mhz)
>> - I need faster CPU than P4 3GHz ??
>
>    or
>
> - there is a problem with iperf  :)
>
> How about measuring with something else? Did you try tcpbench? Or something
> even simpler, like scp-ing from /dev/null to /dev/null? With pf and queues
> enabled you can monitor the B/S rate.
>
>

there is no tcpbench in packages for 4.8 and for debian linux

1.
transferring file by scp from router-test to linux machine:
transfer speed: 16.1MB/s ~ 128.8 Mbits/s

root@router-test (/root)# top

load averages:  1.59,  1.05,  0.67
28 processes:  2 running, 25 idle, 1 on processor
CPU states: 33.3% user,  0.0% nice, 47.9% system, 14.2% interrupt,  4.6% 
idle
Memory: Real: 11M/80M act/tot  Free: 405M  Swap: 0K/759M used/tot


root@router-test (/root)# systat queue

2 users    Load 1.49 0.99 0.74                      Thu Nov 18 16:27:25 2010

QUEUE               BW SCH  PR  PKTS BYTES DROP_P DROP_B QLEN BORR SUSP 
P/S  B/S
root_em0         1000M cbq   0   10M   14G      0      0    0    0    0 
122  17M
  q_lan            950M cbq       10M   14G      0      0    0    0    0 
122  17M


2.
transferring file back from linux machine to router-test:
transfer speed:  19.9MB/s ~ 159.2 Mbits/s

root@router-test (/root)# top

load averages:  1.13,  0.95,  0.69
25 processes:  1 running, 23 idle, 1 on processor
CPU states: 40.1% user,  0.0% nice, 33.5% system, 26.3% interrupt,  0.0% 
idle
Memory: Real: 11M/80M act/tot  Free: 405M  Swap: 0K/759M used/tot


3.
as comparison transfer speed between two debian boxes:
- tested by iperf: 940 Mbits/sec
- transfering file by scp: 42.6MB/s ~ 340.8 Mbits/s

top:

Tasks:  81 total,   1 running,  80 sleeping,   0 stopped,   0 zombie
Cpu(s):  1.8%us, 13.8%sy,  0.0%ni, 79.0%id,  0.0%wa,  1.0%hi,  4.3%si, 
0.0%st
Mem:   1028836k total,   924868k used,   103968k free,    23800k buffers
Swap:  1951856k total,    51524k used,  1900332k free,   617788k cached


----
best regards
RLW