From: David Marchand <david.marchand@6wind.com> To: Stefan Hajnoczi <stefanha@gmail.com> Cc: Paolo Bonzini <pbonzini@redhat.com>, Vincent JARDIN <vincent.jardin@6wind.com>, Henning Schild <henning.schild@siemens.com>, Olivier MATZ <olivier.matz@6wind.com>, kvm <kvm@vger.kernel.org>, qemu-devel <qemu-devel@nongnu.org>, Linux Virtualization <virtualization@lists.linux-foundation.org>, "thomas.monjalon@6wind.com" <thomas.monjalon@6wind.com> Subject: Re: [Qemu-devel] Why I advise against using ivshmem Date: Wed, 18 Jun 2014 16:58:25 +0200 [thread overview] Message-ID: <53A1A911.9040407@6wind.com> (raw) In-Reply-To: <20140618105120.GI14030@stefanha-thinkpad.redhat.com> On 06/18/2014 12:51 PM, Stefan Hajnoczi wrote: >> >> Actually, you can avoid this memory copy using frameworks like DPDK. > > I guess it's careful to allocate all packets in the mmapped BAR? Yes. > That's fine if you can modify applications but doesn't work for > unmodified applications using regular networking APIs. If you have access to source code, this should not be a problem. -- David Marchand
WARNING: multiple messages have this Message-ID (diff)
From: David Marchand <david.marchand@6wind.com> To: Stefan Hajnoczi <stefanha@gmail.com> Cc: Henning Schild <henning.schild@siemens.com>, Olivier MATZ <olivier.matz@6wind.com>, kvm <kvm@vger.kernel.org>, qemu-devel <qemu-devel@nongnu.org>, Linux Virtualization <virtualization@lists.linux-foundation.org>, Paolo Bonzini <pbonzini@redhat.com>, Vincent JARDIN <vincent.jardin@6wind.com>, "thomas.monjalon@6wind.com" <thomas.monjalon@6wind.com> Subject: Re: [Qemu-devel] Why I advise against using ivshmem Date: Wed, 18 Jun 2014 16:58:25 +0200 [thread overview] Message-ID: <53A1A911.9040407@6wind.com> (raw) In-Reply-To: <20140618105120.GI14030@stefanha-thinkpad.redhat.com> On 06/18/2014 12:51 PM, Stefan Hajnoczi wrote: >> >> Actually, you can avoid this memory copy using frameworks like DPDK. > > I guess it's careful to allocate all packets in the mmapped BAR? Yes. > That's fine if you can modify applications but doesn't work for > unmodified applications using regular networking APIs. If you have access to source code, this should not be a problem. -- David Marchand
next prev parent reply other threads:[~2014-06-18 14:58 UTC|newest] Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-06-10 16:48 Using virtio for inter-VM communication Henning Schild 2014-06-10 16:48 ` [Qemu-devel] " Henning Schild 2014-06-10 22:15 ` Vincent JARDIN 2014-06-10 22:15 ` Vincent JARDIN 2014-06-10 22:15 ` [Qemu-devel] " Vincent JARDIN 2014-06-12 6:48 ` Markus Armbruster 2014-06-12 6:48 ` Markus Armbruster 2014-06-12 6:48 ` [Qemu-devel] " Markus Armbruster 2014-06-12 7:44 ` Henning Schild 2014-06-12 7:44 ` [Qemu-devel] " Henning Schild 2014-06-12 9:31 ` Vincent JARDIN 2014-06-12 9:31 ` Vincent JARDIN 2014-06-12 9:31 ` [Qemu-devel] " Vincent JARDIN 2014-06-12 12:55 ` Markus Armbruster 2014-06-12 14:40 ` Why I advise against using ivshmem (was: [Qemu-devel] Using virtio for inter-VM communication) Markus Armbruster 2014-06-12 14:40 ` Markus Armbruster 2014-06-12 14:40 ` [Qemu-devel] Why I advise against using ivshmem (was: " Markus Armbruster 2014-06-12 16:02 ` Why I advise against using ivshmem Vincent JARDIN 2014-06-12 16:02 ` [Qemu-devel] " Vincent JARDIN 2014-06-12 16:54 ` Paolo Bonzini 2014-06-12 16:54 ` [Qemu-devel] " Paolo Bonzini 2014-06-13 8:46 ` Markus Armbruster 2014-06-13 9:26 ` Vincent JARDIN 2014-06-13 9:31 ` Jobin Raju George 2014-06-13 9:31 ` Jobin Raju George 2014-06-13 9:31 ` Jobin Raju George 2014-06-13 9:48 ` Olivier MATZ 2014-06-13 9:48 ` Olivier MATZ 2014-06-13 9:48 ` Olivier MATZ 2014-06-13 10:09 ` Paolo Bonzini 2014-06-13 13:41 ` Vincent JARDIN 2014-06-13 13:41 ` Vincent JARDIN 2014-06-13 13:41 ` Vincent JARDIN 2014-06-13 14:10 ` Paolo Bonzini 2014-06-13 14:10 ` Paolo Bonzini 2014-06-14 18:01 ` Vincent JARDIN 2014-06-14 18:01 ` Vincent JARDIN 2014-06-17 2:54 ` Stefan Hajnoczi 2014-06-17 9:03 ` David Marchand 2014-06-17 9:03 ` David Marchand 2014-06-17 9:44 ` Paolo Bonzini 2014-06-18 10:48 ` Stefan Hajnoczi 2014-06-18 10:48 ` Stefan Hajnoczi 2014-06-18 14:57 ` David Marchand 2014-06-18 14:57 ` David Marchand 2014-06-18 14:57 ` David Marchand 2014-06-18 15:10 ` Paolo Bonzini 2014-06-21 9:34 ` Stefan Hajnoczi 2014-06-26 20:02 ` Cam Macdonell 2014-06-26 20:02 ` Cam Macdonell 2014-06-18 15:01 ` Andreas Färber 2014-06-18 15:01 ` Andreas Färber 2014-06-19 8:25 ` David Marchand 2014-06-19 8:25 ` David Marchand 2014-06-19 8:25 ` David Marchand 2014-06-18 15:01 ` Andreas Färber 2014-06-30 11:10 ` Markus Armbruster 2014-06-30 11:10 ` Markus Armbruster 2014-06-30 11:10 ` Markus Armbruster 2014-06-18 10:51 ` Stefan Hajnoczi 2014-06-18 10:51 ` Stefan Hajnoczi 2014-06-18 14:58 ` David Marchand 2014-06-18 14:58 ` David Marchand [this message] 2014-06-18 14:58 ` David Marchand 2014-06-18 14:22 ` Claudio Fontana 2014-06-17 9:03 ` David Marchand 2014-06-13 9:29 ` Jobin Raju George 2014-06-13 9:29 ` [Qemu-devel] " Jobin Raju George 2014-06-13 9:29 ` Jobin Raju George 2014-06-12 16:02 ` Vincent JARDIN 2014-06-12 2:27 ` Using virtio for inter-VM communication Rusty Russell 2014-06-12 2:27 ` Rusty Russell 2014-06-12 2:27 ` [Qemu-devel] " Rusty Russell 2014-06-12 5:32 ` Jan Kiszka 2014-06-12 5:32 ` [Qemu-devel] " Jan Kiszka 2014-06-13 0:47 ` Rusty Russell 2014-06-13 0:47 ` [Qemu-devel] " Rusty Russell 2014-06-13 6:23 ` Jan Kiszka 2014-06-13 6:23 ` [Qemu-devel] " Jan Kiszka 2014-06-13 8:45 ` Paolo Bonzini 2014-06-13 8:45 ` [Qemu-devel] " Paolo Bonzini 2014-06-15 6:20 ` Jan Kiszka 2014-06-15 6:20 ` Jan Kiszka 2014-06-15 6:20 ` [Qemu-devel] " Jan Kiszka 2014-06-17 5:24 ` Paolo Bonzini 2014-06-17 5:24 ` [Qemu-devel] " Paolo Bonzini 2014-06-17 5:57 ` Jan Kiszka 2014-06-17 5:57 ` Jan Kiszka 2014-06-17 5:57 ` [Qemu-devel] " Jan Kiszka 2014-06-17 5:24 ` Paolo Bonzini 2014-06-12 5:32 ` Jan Kiszka
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