Date: Tue, 15 Sep 2015 20:34:42 +0200 From: Hans Petter Selasky <hps@selasky.org> To: Adrian Chadd <adrian.chadd@gmail.com> Cc: =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= <royger@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "svn-src-head@freebsd.org" <svn-src-head@freebsd.org> Subject: Re: svn commit: r271946 - in head/sys: dev/oce dev/vmware/vmxnet3 dev/xen/netfront kern net netinet ofed/drivers/net/mlx4 sys Message-ID: <55F864C2.9030102@selasky.org> In-Reply-To: <CAJ-VmonsGdG9eddWLLPTG3wwW3FDHDkH-F2xD%2B2nt=yvwBRS-A@mail.gmail.com> References: <201409220827.s8M8RRHB031526@svn.freebsd.org> <55F69093.5050807@FreeBSD.org> <55F6935C.9000000@selasky.org> <55F6A694.7020404@FreeBSD.org> <55F6A914.6050109@selasky.org> <55F6ED8F.5030402@FreeBSD.org> <CAJ-Vmo=vq6NbUNecTvkzDLQW3rQzpPToFGbR9TxdcyO_BL3s_g@mail.gmail.com> <55F7FE1A.3050500@selasky.org> <CAJ-VmonsGdG9eddWLLPTG3wwW3FDHDkH-F2xD%2B2nt=yvwBRS-A@mail.gmail.com>
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Hi Adrian, On 09/15/15 19:13, Adrian Chadd wrote: > I know all of this. What I'm asking is different - what about the > change(s) that broke/fixed the Xen network performance actually caused > the change in behaviour? I know things are sensitive to how the mbufs > are broken up - I'd like to see exactly this. You need to add statistic counters to the network drivers in question, how frequently packets are defragged and/or dropped in the TX path to figure that out. Can we continue this discussion elsewhere? --HPS
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