Date: Mon, 17 Aug 2015 13:51:45 +0300 From: Daniel Braniss <danny@cs.huji.ac.il> To: Christopher Forgeron <csforgeron@gmail.com> Cc: Slawa Olhovchenkov <slw@zxy.spb.ru>, FreeBSD Net <freebsd-net@freebsd.org>, FreeBSD stable <freebsd-stable@freebsd.org> Subject: Re: ix(intel) vs mlxen(mellanox) 10Gb performance Message-ID: <17871443-E105-4434-80B1-6939306A865F@cs.huji.ac.il> In-Reply-To: <CAB2_NwBOLcL4EVjFN6=BvBC_YN=gmfZMweVbmb5ZPCsK4Hnx1g@mail.gmail.com> References: <1D52028A-B39F-4F9B-BD38-CB1D73BF5D56@cs.huji.ac.il> <20150817094145.GB3158@zxy.spb.ru> <CAB2_NwBOLcL4EVjFN6=BvBC_YN=gmfZMweVbmb5ZPCsK4Hnx1g@mail.gmail.com>
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> On Aug 17, 2015, at 1:41 PM, Christopher Forgeron = <csforgeron@gmail.com> wrote: >=20 > FYI, I can regularly hit 9.3 Gib/s with my Intel X520-DA2's and = FreeBSD 10.1. Before 10.1 it was less. >=20 this is NOT iperf/3 where i do get close to wire speed, it=E2=80=99s NFS writes, i.e., almost real work :-) > I used to tweak the card settings, but now it's just stock. You may = want to check your settings, the Mellanox may just have better defaults = for your switch.=20 >=20 > On Mon, Aug 17, 2015 at 6:41 AM, Slawa Olhovchenkov <slw@zxy.spb.ru = <mailto:slw@zxy.spb.ru>> wrote: > On Mon, Aug 17, 2015 at 10:27:41AM +0300, Daniel Braniss wrote: >=20 > > hi, > > I have a host (Dell R730) with both cards, connected to an = HP8200 switch at 10Gb. > > when writing to the same storage (netapp) this is what I get: > > ix0: ~130MGB/s > > mlxen0 ~330MGB/s > > this is via nfs/tcpv3 > > > > I can get similar (bad) performance with the mellanox if I = increase the file size > > to 512MGB. >=20 > Look like mellanox have internal beffer for caching and do ACK = acclerating. >=20 > > so at face value, it seems the mlxen does a better use of = resources than the intel. > > Any ideas how to improve ix/intel's performance? >=20 > Are you sure about netapp performance? > _______________________________________________ > freebsd-net@freebsd.org <mailto:freebsd-net@freebsd.org> mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-net = <https://lists.freebsd.org/mailman/listinfo/freebsd-net>; > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org = <mailto:freebsd-net-unsubscribe@freebsd.org>" >=20
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