HEADS-UP: IFLIB implementations of sys/dev/e1000 em, lem, igb pending

[Allan Jude]

On 2017-01-11 15:37, Matthew Macy wrote:
> You can still explicitly set the number of descriptors. It is now reported under the dev sysctl tree. dev.<device>.<unit>.<value>
> 
> -M
> 
> 
>  ---- On Wed, 11 Jan 2017 12:34:23 -0800 Olivier Cochard-Labbé <olivier at freebsd.org> wrote ---- 
>  > 
>  > On Wed, Jan 11, 2017 at 9:13 PM, Matthew Macy <mmacy at nextbsd.org> wrote:
>  > 
>  >   > Hmmm ... did your old tests do 4 or 8 queues on this hardware?
>  >   >
>  >   > Did the old tests run 1024 tx/rx slots or the max 4096?
>  >  
>  >  That's a great point, only having one thread per core could easily account for this. I'm hoping Sean can make txq != rxq work so that you can have 8txqs and 4 rxqs.
>  >  
>  > 
>  > ​The netgate RCC-VE 4860 is a 4 cores atom C2558E, and I'm using 2 of the 4 Gigabit Intel i350 ports.
>  > Lab detail:
>  > https://bsdrp.net/documentation/examples/forwarding_performance_lab_of_a_netgate_rcc-ve_4860
>  > 
>  > My tunning are (same for both test):
>  > hw.igb.rxd="2048" (it should be useless now)
>  > hw.igb.txd="2048" (it should be useless now)

Matt: I think he meant "useless now" because there is no igb, and the
below hw.em version covers it.

>  > hw.em.rxd="2048"
>  > hw.em.txd="2048"
>  > hw.igb.rx_process_limit="-1" (It should be useless now too)
>  > hw.em.rx_process_limit="-1"
>  > 
>  > dev.igb.2.fc=0
>  > dev.igb.3.fc=0
>  > 
>  > I can generate profiling data for you: what kind of data do you want ?
>  >  
> 
> 
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-- 
Allan Jude