From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: Re: [PATCH net] virtio-net: fix page refcnt leaking when fail to allocate frag skb Date: Wed, 20 Nov 2013 19:03:33 +0200 Message-ID: <20131120170333.GA21972@redhat.com> References: <1384848307-7217-1-git-send-email-jasowang@redhat.com> <1384869828.8604.97.camel@edumazet-glaptop2.roam.corp.google.com> <20131119204909.GA15004@redhat.com> <1384896996.8604.120.camel@edumazet-glaptop2.roam.corp.google.com> <20131119215312.GE15004@redhat.com> <1384898411.8604.127.camel@edumazet-glaptop2.roam.corp.google.com> <20131120085835.GB19341@redhat.com> <1384960593.8604.147.camel@edumazet-glaptop2.roam.corp.google.com> <20131120160625.GA21188@redhat.com> <1384964061.8604.151.camel@edumazet-glaptop2.roam.corp.google.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Michael Dalton , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, Eric Dumazet To: Eric Dumazet Return-path: Content-Disposition: inline In-Reply-To: <1384964061.8604.151.camel@edumazet-glaptop2.roam.corp.google.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org List-Id: netdev.vger.kernel.org On Wed, Nov 20, 2013 at 08:14:21AM -0800, Eric Dumazet wrote: > On Wed, 2013-11-20 at 18:06 +0200, Michael S. Tsirkin wrote: > > > Hmm some kind of disconnect here. > > I got you rmanagement about bufferbloat. > > > > What I am saying is that maybe we should drop packets more > > aggressively: when we drop one packet of a flow, why not > > drop everything that's queued and is for the same flow? > > I really hope your TCP flows use SACK ;) > > Please read the rfc 2018 introduction for details. > > If a packet is dropped, it doesn't mean following packets _have_ to be > dropped. Got it, thanks.