netdev - Re: [PATCH net-next v3 3/4] gve: Rx Buffer Recycling

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Message-ID: <20200930142323.00aa8329@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Wed, 30 Sep 2020 14:23:23 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     David Awogbemila <awogbemila@...gle.com>
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH net-next v3 3/4] gve: Rx Buffer Recycling

On Wed, 30 Sep 2020 09:10:02 -0700 David Awogbemila wrote:
> > What if the queue runs completely dry during memory shortage?
> > You need some form of delayed work to periodically refill
> > the free buffers, right?  
> 
> Thanks, this looks like it will require modifications that will need
> to be well tested.
> Just for my own curiosity, how common of an occurrence are such memory
> shortages?

Depends on the workload. For some apps they are very common.