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From: Gaëtan Rivet <gaetan.rivet@6wind.com>
To: Thomas Monjalon <thomas@monjalon.net>
Cc: david.marchand@redhat.com, ferruh.yigit@intel.com, dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH] devtools: disable automatic probing in null testing
Date: Fri, 22 Nov 2019 15:03:47 +0100
Message-ID: <20191122140347.GE28445@bidouze.6wind.com> (raw)
In-Reply-To: <20191122134808.7639-1-thomas@monjalon.net>

Hi Thomas,

On Fri, Nov 22, 2019 at 02:48:08PM +0100, Thomas Monjalon wrote:
> The script test-null.sh is supposed to do a quick and simple
> run of testpmd with null PMD only, for sanity check.
> As it is not supposed to test probing of any other PMD,
> physical device probing is switched to whitelist mode
> by using a fake PCI address (0:0.0).
> It will also help to keep memory usage stable across platforms.
> 

With https://patchwork.dpdk.org/patch/62014/, --manual-probe could be
used as a more standard way of workarounding the PCI bus.

This is a common issue, we should have cleaner way of addressing it than
using hacks relying on the PCI bus not panicking up upon finding an
inexistant address. Which is a questionable behavior, users should not
be encouraged to rely on it.

> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
> ---
>  devtools/test-null.sh | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/devtools/test-null.sh b/devtools/test-null.sh
> index 9f9a459f76..d82c6ad193 100755
> --- a/devtools/test-null.sh
> +++ b/devtools/test-null.sh
> @@ -26,5 +26,5 @@ fi
>  
>  (sleep 1 && echo stop) |
>  $testpmd -c $coremask --no-huge -m 150 \
> -	$libs --vdev net_null1 --vdev net_null2 $eal_options -- \
> +	$libs -w 0:0.0 --vdev net_null1 --vdev net_null2 $eal_options -- \
>  	--no-mlockall --total-num-mbufs=2048 $testpmd_options -ia
> -- 
> 2.23.0
> 

-- 
Gaëtan Rivet
6WIND

  parent reply index

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-21 15:12 [dpdk-dev] [PATCH] app/testpmd: reduce memory consumption David Marchand
2019-11-21 15:36 ` Ferruh Yigit
2019-11-21 16:17   ` David Marchand
2019-11-21 16:23     ` David Marchand
2019-11-21 21:22       ` Thomas Monjalon
2019-11-21 16:45 ` Stephen Hemminger
2019-11-21 20:32   ` David Marchand
2019-11-21 21:25 ` Thomas Monjalon
2019-11-21 21:55   ` Thomas Monjalon
2019-11-22 10:43 ` [dpdk-dev] [PATCH v2] " David Marchand
2019-11-22 12:24   ` Ferruh Yigit
2019-11-22 13:12     ` Thomas Monjalon
2019-11-22 13:14       ` Ferruh Yigit
2019-11-22 13:48         ` [dpdk-dev] [PATCH] devtools: disable automatic probing in null testing Thomas Monjalon
2019-11-22 13:56           ` Ferruh Yigit
2019-11-22 15:56             ` David Marchand
2019-11-24 22:52               ` Thomas Monjalon
2019-11-22 14:03           ` Gaëtan Rivet [this message]
2019-11-22 14:36             ` Thomas Monjalon
2019-11-22 14:14   ` [dpdk-dev] [PATCH v2] app/testpmd: reduce memory consumption Ferruh Yigit

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