Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1264306

Re: [RFC PATCH 0/2] net: mvneta: Introduce RSS support

Show all headers | View raw

Hi Gregory,


> I also choose to associate all the TX queues on the same CPU that the
> one associated to the RX queue. It allows to contain all the
> interrupts on the same CPU. I think that an improvement on this side
> would be the support of the XPS.
>

Did you make some tries? E.g. after mapping certain txqs to CPU1, when
using them was mvneta_tx() executing only on this CPU? Or it rather
means that the irq will hit according to the mapping? As far as I know
the HW, the latter should be true, which would mean the real XPS with
this controller is impossible and the maximum we can control is the
irq.

I think it may be worth to unmask TX irqs on all cpus, so all percpu
napi's would be able to read tx_cause and process sent packets. I'm
looking forward to your opinion.

Best regards,
Marcin
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[RFC PATCH 0/2] net: mvneta: Introduce RSS support Gregory CLEMENT <gregory.clement@free-electrons.com> - 2015-11-06 19:40 +0100
  [RFC PATCH 2/2] net: mvneta: Add naive RSS support Gregory CLEMENT <gregory.clement@free-electrons.com> - 2015-11-06 19:40 +0100
    Re: [RFC PATCH 2/2] net: mvneta: Add naive RSS support Marcin Wojtas <mw@semihalf.com> - 2015-11-06 20:20 +0100
      Re: [RFC PATCH 2/2] net: mvneta: Add naive RSS support Gregory CLEMENT <gregory.clement@free-electrons.com> - 2015-11-06 22:00 +0100
  [RFC PATCH 1/2] net: mvneta: Associate RX queues with each CPU Gregory CLEMENT <gregory.clement@free-electrons.com> - 2015-11-06 19:40 +0100
  Re: [RFC PATCH 0/2] net: mvneta: Introduce RSS support Marcin Wojtas <mw@semihalf.com> - 2015-11-06 20:40 +0100
    Re: [RFC PATCH 0/2] net: mvneta: Introduce RSS support Gregory CLEMENT <gregory.clement@free-electrons.com> - 2015-11-09 19:20 +0100

csiph-web