Date: Mon, 4 Jan 2016 14:23:02 +0800 From: Julian Elischer <julian@freebsd.org> To: HuanHuan <mailhuanhuan@gmail.com>, Rui Paulo <rpaulo@me.com> Cc: freebsd-net@freebsd.org, Luigi Rizzo <rizzo@iet.unipi.it> Subject: Re: Does FreeBSD have sendmmsg or recvmmsg system calls? Message-ID: <568A0FC6.8050107@freebsd.org> In-Reply-To: <alpine.BSF.2.20.1601040524170.84701@localhost.my.domain> References: <alpine.BSF.2.20.1601031833130.84701@localhost.my.domain> <1451841004.10139.34.camel@me.com> <alpine.BSF.2.20.1601040524170.84701@localhost.my.domain>
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On 4/01/2016 5:32 AM, HuanHuan wrote: > Hi Rui, > > There are no existing applications, but these two calls are for > developing new application on 10G links. > > Currently I use netgraph, especially ng_socket node. And a simple > recvfrom() on a ng_socket costs ~5us or so (200K per second). And > there are many netgraph sockets. So it's good to reduce the time by > ultilizing send/recvmmsg() if there are these two syscalls. Even a > simple-loop like implmentation like linux's will be good as Luigi > has suggested. As the writer of netgraph I would like to point out that it was never designed to be a high throughput service. I'm happy thought that it CAN be used at these speeds but I designed it for prototyping and for serial line speeds. The idea was that once something was prototyped out, one would take the code from all the modules used and create a special purpose module that dd what you need. The fact that people have not needed the last step is gratifying but surprising. > > On Sun, 3 Jan 2016, Rui Paulo wrote: > >> On Sun, 2016-01-03 at 18:34 +0800, HuanHuan wrote: >>> NetBSD 7.0 has just introduced these two syscalls. >>> And Linux also has them. >>> >>> Does FreeBSD have them? Or plan to support them in the future? >> >> FreeBSD does not have them. It doesn't seem especially hard to >> implement, though. Do you know any major application already using >> them? >> >> -- >> Rui Paulo >> >> > _______________________________________________ > freebsd-net@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > >
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