Date: Sat, 23 Apr 2022 04:11:27 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 251052] [sctp] Throughput becomes extremely low under load Message-ID: <bug-251052-7501-Mdv8ThIbrK@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-251052-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-251052-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D251052 --- Comment #11 from bc979@lafn.org --- (In reply to Bryan Drewery from comment #9) It appears that iperf3 does not use multiple streams regardless of the sett= ings for the arguments. With nstreams set to > 1, tcpdump shows that the SCTP f= ield SID is always 0. Looking through the code, the actual write statement used does not support including a stream pointer. I suspect that was overlooked= in the last update. The code does call a sctp_write like function, but it is = just set to their standard write module. Iperf3 will not test this problem alth= ough it does sort of indicate a problem since the throughput basically goes to z= ero. This just might be a problem in iperf3 rather than in SCTP. --=20 You are receiving this mail because: You are the assignee for the bug.=
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