Date: Thu, 03 Oct 2019 11:49:10 +0100 From: Pete French <petefrench@ingresso.co.uk> To: eugen@grosbein.net, freebsd-stable@freebsd.org, petefrench@ingresso.co.uk Subject: Re: Running iperf3 as a server drops all connections to a machine Message-ID: <E1iFyfW-0000uH-Q8@dilbert.ingresso.co.uk> In-Reply-To: <59a037a5-03df-e143-41e9-0cfe648a3f22@grosbein.net>
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> > Any opinions or things people would ike me to check ? > > netstat -p tcp -ss > tcpdump -i $interface -npvs0 icmp or 'tcp[tcpflags] & (tcp-rst) !=3D 0' I havent had a chnace to look at this for a couple of days, but I thought I would give it mor testing now (doing the above). Updated to the latest -STABLE as I always do before checking things, and the problem has now gone away. Theres nothing I can see in the commits over the last few days which touches this - the only thign I can see is the changes to ixgbe, and mine is igb so it cant be that. The test I did at the time showed the network rate slowing to zero, but staying up if I didnt use cubic - the disconnect only happened using cubic, if thats a useful data point. I will try and find time to go back to the older ernel and see if it still does it. If not then I guess I can say it was a hardware fault, which seems to have fixed itself, but it didnt feel like it at the time. So, thats the update - will follow up to this thread if I can get it to happen again, and will make the suggested tests. (I assume you mean to run that inside 'screen' on the server side, yes?) thanks, -pete.
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