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From: Venumadhav Josyula <vjosyula@gmail.com>
To: "Burakov, Anatoly" <anatoly.burakov@intel.com>
Cc: Bruce Richardson <bruce.richardson@intel.com>,
	users@dpdk.org, dev@dpdk.org,
	Venumadhav Josyula <vjosyula@parallelwireless.com>
Subject: Re: [dpdk-users] [dpdk-dev] time taken for allocation of mempool.
Date: Thu, 14 Nov 2019 15:20:16 +0530	[thread overview]
Message-ID: <CA+i0PGWOGLUK61J-1mZNQjnyRYDxkZfWAzOaJEJ5CXq+xoNyKA@mail.gmail.com> (raw)
In-Reply-To: <3c014e01-3635-df19-a11c-2db09b03d423@intel.com>

Hi Anatoly,

Thanks for quick response. We want to understand, if there will be
performance implications because of iova-mode being va. We want to
understand,  specifically in terms following

   - cache misses
   - Branch misses etc
   - translation of va addr -> phy addr when packet is receieved

 Thanks and regards
Venu

On Thu, 14 Nov 2019 at 15:14, Burakov, Anatoly <anatoly.burakov@intel.com>
wrote:

> On 13-Nov-19 9:01 PM, Venumadhav Josyula wrote:
> > Hi Anatoly,
> >
> > By default w/o specifying --iova-mode option is iova-mode=pa by default ?
> >
> > Thanks
> > Venu
> >
>
> In 18.11, there is a very specific set of circumstances that will
> default to IOVA as VA mode. Future releases have become more aggressive,
> to the point of IOVA as VA mode being the default unless asked
> otherwise. So yes, it is highly likely that in your case, IOVA as PA is
> picked as the default.
>
> --
> Thanks,
> Anatoly
>

  reply	other threads:[~2019-11-14  9:50 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-13  5:07 [dpdk-users] " Venumadhav Josyula
2019-11-13  5:12 ` Venumadhav Josyula
2019-11-13  8:32   ` [dpdk-users] [dpdk-dev] " Olivier Matz
2019-11-13  9:11     ` Venumadhav Josyula
2019-11-13  9:30       ` Olivier Matz
2019-11-13  9:19 ` Bruce Richardson
2019-11-13 17:26   ` Burakov, Anatoly
2019-11-13 21:01     ` Venumadhav Josyula
2019-11-14  9:44       ` Burakov, Anatoly
2019-11-14  9:50         ` Venumadhav Josyula [this message]
2019-11-14  9:57           ` Burakov, Anatoly
2019-11-18 16:43             ` Venumadhav Josyula
2019-12-06 10:47               ` Burakov, Anatoly
2019-12-06 10:49                 ` Venumadhav Josyula
2019-11-14  8:12     ` Venumadhav Josyula
2019-11-14  9:49       ` Burakov, Anatoly
2019-11-14  9:53         ` Venumadhav Josyula
2019-11-18 16:45 ` [dpdk-users] " Venumadhav Josyula

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