TSO test

[Eric van Gyzen]

Oh, you compare the "total" column from run to run.  Sorry, I was just
thinking about the "rate" column.  Sorry for the noise.

Eric

On 03/17/2016 10:58, Pieper, Jeffrey E wrote:
> No, we have scripts that parse vmstat -i.
> 
> Jeff
> 
> -----Original Message-----
> From: Eric van Gyzen [mailto:vangyzen at FreeBSD.org] 
> Sent: Thursday, March 17, 2016 8:56 AM
> To: Pieper, Jeffrey E <jeffrey.e.pieper at intel.com>; Alan Somers <asomers at freebsd.org>
> Cc: FreeBSD Net <freebsd-net at freebsd.org>; Jack Vogel <jfvogel at gmail.com>
> Subject: Re: TSO test
> 
> Jeff,
> 
> So, you reboot the DUT between each scenario?
> 
> Eric
> 
> On 03/17/2016 10:28, Pieper, Jeffrey E wrote:
>> You can also parse vmstat -i, which we do as well.
>>
>> Jeff
>>
>> -----Original Message-----
>> From: Eric van Gyzen [mailto:vangyzen at FreeBSD.org] 
>> Sent: Thursday, March 17, 2016 8:23 AM
>> To: Alan Somers <asomers at freebsd.org>; Pieper, Jeffrey E <jeffrey.e.pieper at intel.com>
>> Cc: FreeBSD Net <freebsd-net at freebsd.org>; Jack Vogel <jfvogel at gmail.com>
>> Subject: Re: TSO test
>>
>> Alan,
>>
>> That does sound useful.  As one complication, "vmstat -i" shows the
>> interrupt rate since boot.  Either the test would need to reboot between
>> each iteration, or vmstat would need to be improved to show the "recent"
>> rate.  The latter would be a much welcome improvement, in my humble opinion.
>>
>> Cheers,
>>
>> Eric
>>
>> On 03/17/2016 09:45, Alan Somers wrote:
>>> Would it be more useful to log the NIC's interrupt rate using "vmstat -i"?
>>>
>>> On Thu, Mar 17, 2016 at 8:25 AM, Pieper, Jeffrey E <
>>> jeffrey.e.pieper at intel.com> wrote:
>>>
>>>> Basically what we do is run TCP tx traffic using various message sizes
>>>> with TSO enabled, while logging throughput and CPU usage, then run the same
>>>> scenario again with TSO disabled. We do this with both IPv4 and IPv6.
>>>>
>>>> Jeff
>>>>
>>>> -----Original Message-----
>>>> From: owner-freebsd-net at freebsd.org [mailto:owner-freebsd-net at freebsd.org]
>>>> On Behalf Of Jack Vogel
>>>> Sent: Wednesday, March 16, 2016 11:31 PM
>>>> To: FreeBSD Net <freebsd-net at freebsd.org>
>>>> Subject: TSO test
>>>>
>>>> Anyone have a 'simple' test case for TSO, something a bit
>>>> more distilled than running netperf or iperf?
>>>>
>>>> Thanks,
>>>>
>>>> Jack
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>>
>