From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============2009086529520283204==" MIME-Version: 1.0 From: Walker, Benjamin Subject: Re: [SPDK] disk read and network push Date: Mon, 14 Mar 2016 17:04:56 +0000 Message-ID: <1457975096.2884.85.camel@intel.com> In-Reply-To: CAA=abZ_2wyfV6QSzf7Ej0GNK9Bu1L9VaDX8Dc3_=1_fn1zM2QQ@mail.gmail.com List-ID: To: spdk@lists.01.org --===============2009086529520283204== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Hi Sara, Can you elaborate and provide some background context? Are you writing a de= dicated storage application based on SPDK and DPDK? How does this applicati= on serve data to its clients (TCP, UDP, something else)?. Does the NIC you = are using support scatter gather and TSO? Generally speaking, zero copy (defined as one DMA from disk to host memory = and then another DMA from host memory to the NIC) is possible given the rig= ht hardware. Thanks, Ben On Mon, 2016-03-14 at 03:52 -0700, Saravana Kumar wrote: Hi SPDK team I want to know whether disk read(spdk) to network send(dpd= k) can be done...if so how data can be read from disk and sent on network. = lets say 2MB of data needs to be sent from disk to network then 2MB needs t= o be read and split on the dpdk send buffers or make 2MB/( number of dpdk s= end buffer) calls to spdk ? In the latter case copy can be avoided but number of spdk = calls increases. Thanks team.. Regards, Sara _______________________________________________ SPDK mailing list SPDK(a)lists.01.org https://lists.01.org/mailman/listinfo/spdk --===============2009086529520283204==--