Date: Tue, 7 Nov 2017 18:29:48 +0100 From: Vincenzo Maffione <v.maffione@gmail.com> To: Joe Buehler <aspam@cox.net> Cc: FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: virtio_net / netmap RX dropping frames Message-ID: <CA%2B_eA9gu6ztg=TqqvaU_52JytNe9aoH6qi2yWLDX3Wc1Thf0HA@mail.gmail.com> In-Reply-To: <5A01EC84.80703@cox.net> References: <59F0FBEE.6030008@cox.net> <59F1F1BA.3020608@cox.net> <59F214F6.9060905@cox.net> <59F223C3.5040907@cox.net> <5A01EC84.80703@cox.net>
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I understand. My point was simply to make sure your performance problems here are not netmap's fault. Cheers, Vincenzo 2017-11-07 18:25 GMT+01:00 Joe Buehler <aspam@cox.net>: > I believe the frame drop is due to the nature of my KVM setup. There > are large latencies in processing incoming frames due to the vagaries of > the LINUX kernel. Moving to the RT kernel helped, host tuning is also > needed to eliminate large latencies in processing frames. There is good > information on real-time KVM on the net that explains how to achieve > what I want. > > Joe Buehler > > -- Vincenzo Maffione
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