Performance problem using Intel X520-DA2
Ivan Voras
ivoras at freebsd.org
Wed Jan 25 11:59:53 UTC 2012
On 24/01/2012 17:53, Marcin Markowski wrote:
> On 24.01.2012 14:22, Ivan Voras wrote:
>>> On Mon, Jan 23, 2012 at 12:20 PM, Marcin
>>> Markowski<mmarkowski at leon.pl>wrote:
>>
>>>> (on 9.0 we can see also kernel thread named {ix0 que} using 100% CPU),
>>
>>>> hw.ixgbe.num_queues=16
>>
>> If there really are 16 hardware queues, shouldn't there be 16 kernel
>> threads for queue processing?
>
> There are 16 threads, but only one of them consumes 100% CPU and the others
> do not use more than 5% CPU:
>
> http://pastebin.com/BWDWh8kW
You need Jack to confirm it but this looks like a serious problem /
bottleneck. It just shouldn't be like that (if the test is exactly the
same).
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