Groups > linux.kernel > #1209043

Re: [v1 0/6] * nps_enet fixups *

From	David Miller <davem@davemloft.net>
Newsgroups	linux.kernel
Subject	Re: [v1 0/6] * nps_enet fixups *
Date	2015-08-18 07:30 +0200
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From: Noam Camus <noamc@ezchip.com>
Date: Tue, 18 Aug 2015 05:04:20 +0000

> I followed "Hardware Architecture" section from:
> http://www.linuxfoundation.org/collaborate/workgroups/networking/napi
> and came up with "reduce processing latency" idea.

That document has lots of incorrect advice, that's for sure.

For one thing, it also says to count TX work against the budget, you
absolutely should not do this.  TX work is "free" compared to RX work
(which is several orders of magnitude more expensive) and therefore
should not count against the NAPI budget value.
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[v1 0/6] *** nps_enet fixups *** Noam Camus <noamc@ezchip.com> - 2015-08-17 08:00 +0200
  Re: [v1 0/6] *** nps_enet fixups *** David Miller <davem@davemloft.net> - 2015-08-17 19:40 +0200
    RE: [v1 0/6] *** nps_enet fixups *** Noam Camus <noamc@ezchip.com> - 2015-08-18 07:10 +0200
      Re: [v1 0/6] *** nps_enet fixups *** David Miller <davem@davemloft.net> - 2015-08-18 07:30 +0200

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