Which version of iperf did you modify?
Bob
On Fri, Jan 13, 2017 at 10:27 AM, Hoshall, Paul <hos...@textronsystems.com>
wrote:
> No versions of iperf I’ve seen use sendto() for UDP…..
>
>
>
> And Yes….I modified iperf and took measurements…..
>
>
>
> After my UDP application could not achieve the iperf UDP throughput….
>
> which subsequently is really only UDP by the protocol ID in the IP header….
>
> All other protocol layers are connection-oriented…..socket
> connect/listen/etc…
>
>
>
> *From:* Bob McMahon [mailto:bob.mcma...@broadcom.com]
> *Sent:* Friday, January 13, 2017 1:15 PM
> *To:* Hoshall, Paul
> *Cc:* iperf-users@lists.sourceforge.net; Gibbs, James
> *Subject:* Re: [Iperf-users] When will real UDP, connectionless
> (sendto(), recvfrom(), broadcast) be iperf'd?
>
>
>
> Which version of iperf are you using? Do you have any measurements for
> UDP using sendto() vs send() with bind() and connect()? I haven't seen any
> performance difference on my systems but haven't really spent much time
> profile it either.
>
>
>
> http://man7.org/linux/man-pages/man7/udp.7.html
>
>
>
> Bob
>
>
>
> On Fri, Jan 13, 2017 at 5:52 AM, Hoshall, Paul <hos...@textronsystems.com>
> wrote:
>
> Iperf does a connect with the UDP socket first….then sends() to a specific
> address
>
>
>
> Sendto ( broadcast ) is way slower than send()…..in Linux and Windows
>
>
>
> *From:* Bob McMahon [mailto:bob.mcma...@broadcom.com]
> *Sent:* Thursday, January 12, 2017 5:48 PM
> *To:* Hoshall, Paul
> *Cc:* iperf-users@lists.sourceforge.net; Gibbs, James
> *Subject:* Re: [Iperf-users] When will real UDP, connectionless
> (sendto(), recvfrom(), broadcast) be iperf'd?
>
>
>
> Not sure why this is needed. I think a UDP socket with bind() using
> send() is equivalent to sendto() with respect to both being connectionless
> at the network layer. Are you trying to test system or OS calls? If not,
> I think a bind for UDP should be fine.
>
>
>
> Bob
>
>
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>
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