Why host transmit rate on 1Gb ethernet is only ~750Mbps ?

Jason Leschnik leschnik at gmail.com
Sun Apr 15 01:14:12 UTC 2012


What about the results on the end node, during the testing?.

On Sun, Apr 15, 2012 at 5:37 AM, Yuri <yuri at rawbw.com> wrote:
> On 04/14/2012 12:32, Jason Leschnik wrote:
>>
>> What kind of load are you looking at when running the test?
>>
>> maybe output `vmstat 1 15` during a test run
>
>
> Here is the log during the test run on the sending side:
>
> # vmstat 1 15
>  procs      memory      page                    disks     faults         cpu
>  r b w     avm    fre   flt  re  pi  po    fr  sr md0 ad0   in   sy   cs us
> sy id
>  0 9 17  32481M  1312M  3155   1   6   0  3263 430   0   0 1163 11537 6958
>  4  1 95
>  1 9 17  32507M  1312M   283   0   0   0    55   0   0   0 2354 163960 8891
>  5  4 91
>  1 9 17  32507M  1312M     4   0   0   0     0   0   0   0 5427 156936 15139
>  5  3 92
>  0 9 17  32507M  1312M  3436   0   0   0  2380   0   0   0 5412 211755 16386
>  7  4 89
>  0 9 17  32507M  1312M     4   0   0   0     0   0   0   0 5418 151530 15159
>  5  3 92
>  1 9 17  32495M  1321M     5   0   0   0  2380   0   0   0 5411 145787 15047
>  4  3 93
>  1 9 17  32495M  1321M     4   0   0   0     0   0   0   0 5492 147687 15451
>  4  3 93
>  0 9 17  32495M  1321M     4   0   0   0     0   0   0   0 5441 145666 15155
>  4  3 92
>  0 9 17  32495M  1321M   600   0   0   0     0   0   0   0 5418 147173 15361
>  4  2 93
>  0 9 17  32495M  1321M     7   0   0   0     0   0   0   0 5428 145410 15122
>  4  3 93
>  0 9 17  32495M  1321M     4   0   0   0     0   0   0   0 5427 146896 15175
>  4  3 93
>  1 9 17  32481M  1312M  2402   0   0   0   399   0   0  51 2629 128751 9712
>  4  2 93
>
> Yuri



-- 
Regards,
Jason Leschnik.

[m] 0432 35 4224
[w@] jason dot leschnik <at> ansto dot gov dot au
[U@] jml974 at uow.edu.au


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