Date: 8 Jan 2016 07:58:15 +0000 From: "Mark Delany" <c2h@romeo.emu.st> To: freebsd-net@freebsd.org Subject: Re: Does FreeBSD have sendmmsg or recvmmsg system calls? Message-ID: <20160108075815.3243.qmail@f5-external.bushwire.net> In-Reply-To: <20160108172323.W1815@besplex.bde.org> References: <20160104101747.58347.qmail@f5-external.bushwire.net> <20160104194044.GD3625@kib.kiev.ua> <20160104210741.32812.qmail@f5-external.bushwire.net> <CAP=KkTwfpjec2Tgnm4PRR3u8t4GEqN9Febm5HRcqapifBG-B6g@mail.gmail.com> <CA%2BhQ2%2Bh4NNz9tgSpjJdv7fXteq5tAR7o3LvjV=u08NHjRLPwmA@mail.gmail.com> <CAP=KkTzFUDsZwDDLD3n97xJW0qLVZMPduZGSX%2BeXC3UuLpVjMg@mail.gmail.com> <20160107161213.GZ3625@kib.kiev.ua> <CA%2BhQ2%2Bg6OB3MmZrW5hzNSnkcqKaKf1XGDraHfWXtSrowxKuL5g@mail.gmail.com> <20160107192840.GF3625@kib.kiev.ua> <20160108172323.W1815@besplex.bde.org>
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On 08Jan16, Bruce Evans allegedly wrote: > If the NIC can't reach line rate > Network stack overheads are also enormous. Bruce makes some excellent points. I challenge anyone to get line rate UDP out of FBSD (or Linux) for a 1G NIC yet alone a 10G NIC listening to a single port. It was exactly my frustration with UDP performance that led me down the path of *mmsg() and netmap. Frankly this is an opportunity for FBSD as UDP performance appears to be a neglected area. Mark.
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