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To: Stephen Hemminger , Dave Taht References: <56270996-33a6-d71b-d935-452dad121df7@linux.alibaba.com> <20210517160036.4093d3f2@hermes.local> From: Eric Dumazet Message-ID: Date: Wed, 19 May 2021 16:31:10 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.0 MIME-Version: 1.0 In-Reply-To: <20210517160036.4093d3f2@hermes.local> Content-Language: en-US Cc: Willem de Bruijn , "Michael S. Tsirkin" , Xianting Tian , Linux Kernel Network Developers , LKML , virtualization , bloat , Jakub Kicinski , "David S. Miller" X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" On 5/18/21 1:00 AM, Stephen Hemminger wrote: > > The Azure network driver (netvsc) also does not have BQL. Several years ago > I tried adding it but it benchmarked worse and there is the added complexity > of handling the accelerated networking VF path. > Note that NIC with many TX queues make BQL almost useless, only adding extra overhead. We should probably make BQL something that can be manually turned on/off. _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization