TSO test

[Eric van Gyzen]

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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>