Does FreeBSD have sendmmsg or recvmmsg system calls?

[Julian Elischer]

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
>>
>>
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