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From: Bruce Richardson <bruce.richardson@intel.com>
To: Thomas Monjalon <thomas.monjalon@6wind.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v2 3/5] testpmd: Change rxfreet default to 32
Date: Fri, 7 Nov 2014 13:49:30 +0000
Message-ID: <20141107134929.GA12092@bricha3-MOBL3> (raw)
In-Reply-To: <2215672.o2GmOzFsZU@xps13>

On Fri, Nov 07, 2014 at 01:30:53PM +0100, Thomas Monjalon wrote:
> Hi Bruce,
> 
> 2014-09-24 09:03, Richardson, Bruce:
> > From: Neil Horman [mailto:nhorman@tuxdriver.com]
> > > On Tue, Sep 23, 2014 at 12:08:15PM +0100, Bruce Richardson wrote:
> > > > --- a/app/test-pmd/testpmd.c
> > > > +++ b/app/test-pmd/testpmd.c
> > > > @@ -225,7 +225,9 @@ struct rte_eth_thresh tx_thresh = {
> > > >  /*
> > > >   * Configurable value of RX free threshold.
> > > >   */
> > > > -uint16_t rx_free_thresh = 0; /* Immediately free RX descriptors by default. */
> > > > +uint16_t rx_free_thresh = 32; /* Refill RX descriptors once every 32 packets,
> > > > +		This setting is needed for ixgbe to enable bulk alloc or vector
> > > > +		receive functionality. */
> > > 
> > > I thought we were talking about making this a pmd private selectable item,
> > > or allowing a reserved "let the pmd decide" setting.  Or are we saving
> > > that for a later time?
> > 
> > Yes, we are looking at that - and hopefully we can also get a patch for that
> > in for our next release. However, I've left this patch in just in case that
> > doesn't actually happen, as the performance improvements for 10G are just
> > too good to leave aside for the sake of a 1-line change. Ideally, I'd like
> > this go to in, and then be replaced by a "proper" fix.
> 
> Now the patch for PMD defaults is integrated:
> 	http://dpdk.org/ml/archives/dev/2014-October/006511.html
> Are you working on getting these defaults in testpmd?
> 

Not at the minute, as I'm busy on other things. If I find time I can look at it,
though, if nobody else volunteers to do so first.

/Bruce


> Thanks
> -- 
> Thomas

  reply	other threads:[~2014-11-07 13:40 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-17 10:01 [dpdk-dev] [PATCH 0/5] Mbuf Structure Rework, part 3 Bruce Richardson
2014-09-17 10:01 ` [dpdk-dev] [PATCH 1/5] mbuf: ensure next pointer is set to null on free Bruce Richardson
2014-09-17 10:01 ` [dpdk-dev] [PATCH 2/5] ixgbe: add prefetch to improve slow-path tx perf Bruce Richardson
2014-09-17 15:21   ` Neil Horman
2014-09-17 15:35     ` Richardson, Bruce
2014-09-17 17:59       ` Neil Horman
2014-09-18 13:36         ` Bruce Richardson
2014-09-18 15:29           ` Neil Horman
2014-09-18 15:42             ` Bruce Richardson
2014-09-18 17:56               ` Neil Horman
2014-09-17 10:01 ` [dpdk-dev] [PATCH 3/5] testpmd: Change rxfreet default to 32 Bruce Richardson
2014-09-17 15:29   ` Neil Horman
2014-09-18 15:53     ` Richardson, Bruce
2014-09-18 17:13       ` Thomas Monjalon
2014-09-18 18:08         ` Neil Horman
2014-09-19  9:18           ` Richardson, Bruce
2014-09-19 10:24             ` Neil Horman
2014-09-19 10:28               ` Richardson, Bruce
2014-09-19 15:18                 ` Neil Horman
2014-09-18 18:03       ` Neil Horman
2014-09-17 10:01 ` [dpdk-dev] [PATCH 4/5] mbuf: add userdata pointer field Bruce Richardson
2014-09-17 15:35   ` Neil Horman
2014-09-17 16:02     ` Richardson, Bruce
2014-09-17 18:29       ` Neil Horman
2014-09-17 10:01 ` [dpdk-dev] [PATCH 5/5] mbuf: Add in second vlan tag field to mbuf Bruce Richardson
2014-09-17 20:46   ` Stephen Hemminger
2014-09-23 11:08 ` [dpdk-dev] [PATCH v2 0/5] Mbuf Structure Rework, part 3 Bruce Richardson
2014-09-23 11:08   ` [dpdk-dev] [PATCH v2 1/5] mbuf: ensure next pointer is set to null on free Bruce Richardson
2014-09-23 11:08   ` [dpdk-dev] [PATCH v2 2/5] ixgbe: add prefetch to improve slow-path tx perf Bruce Richardson
2014-09-23 11:08   ` [dpdk-dev] [PATCH v2 3/5] testpmd: Change rxfreet default to 32 Bruce Richardson
2014-09-23 17:02     ` Neil Horman
2014-09-24  9:03       ` Richardson, Bruce
2014-09-24 10:05         ` Neil Horman
2014-11-07 12:30         ` Thomas Monjalon
2014-11-07 13:49           ` Bruce Richardson [this message]
2014-09-23 11:08   ` [dpdk-dev] [PATCH v2 4/5] mbuf: add userdata pointer field Bruce Richardson
2014-09-23 11:08   ` [dpdk-dev] [PATCH v2 5/5] mbuf: switch vlan_tci and reserved2 fields Bruce Richardson
2014-09-29 15:58   ` [dpdk-dev] [PATCH v2 0/5] Mbuf Structure Rework, part 3 De Lara Guarch, Pablo
2014-10-08 12:31     ` Thomas Monjalon

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