netdev - RE: [PATCH v5 2/2] virtio-net: use mtu size as buffer length for big packets

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Message-ID: <PH0PR12MB5481910FDC14C294979BB529DC4E9@PH0PR12MB5481.namprd12.prod.outlook.com>
Date:   Thu, 22 Sep 2022 10:07:04 +0000
From:   Parav Pandit <parav@...dia.com>
To:     "Michael S. Tsirkin" <mst@...hat.com>
CC:     Gavin Li <gavinl@...dia.com>,
        "stephen@...workplumber.org" <stephen@...workplumber.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "jesse.brandeburg@...el.com" <jesse.brandeburg@...el.com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "sridhar.samudrala@...el.com" <sridhar.samudrala@...el.com>,
        "jasowang@...hat.com" <jasowang@...hat.com>,
        "loseweigh@...il.com" <loseweigh@...il.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "virtualization@...ts.linux-foundation.org" 
        <virtualization@...ts.linux-foundation.org>,
        "virtio-dev@...ts.oasis-open.org" <virtio-dev@...ts.oasis-open.org>,
        Gavi Teitz <gavi@...dia.com>,
        Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
        Si-Wei Liu <si-wei.liu@...cle.com>
Subject: RE: [PATCH v5 2/2] virtio-net: use mtu size as buffer length for big
 packets


> From: Michael S. Tsirkin <mst@...hat.com>
> Sent: Thursday, September 22, 2022 5:27 AM

> > >
> > > And I'd like commit log to include results of perf testing
> > > - with indirect feature on
> > Which device do you suggest using for this test?
> 
> AFAIK most devices support INDIRECT, e.g. don't nvidia cards do this?
The device of interest didn't have INDIRECT support.
But the question is no more relevant as Gavin supplied the numbers with INDIRECT in commit log of v6.