> On Aug 17, 2015, at 3:21 PM, Rick Macklem <rmack...@uoguelph.ca> wrote: > > Daniel Braniss wrote: >> >>> On Aug 17, 2015, at 1:41 PM, Christopher Forgeron <csforge...@gmail.com> >>> wrote: >>> >>> 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. >>> >> >> this is NOT iperf/3 where i do get close to wire speed, >> it’s 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. >>> > Have you tried disabling TSO for the Intel? With TSO enabled, it will be > copying > every transmitted mbuf chain to a new chain of mbuf clusters via. m_defrag() > when > TSO is enabled. (Assuming you aren't an 82598 chip. Most seem to be the 82599 > chip > these days?) >
hi Rick how can i check the chip? > This has been fixed in the driver very recently, but those fixes won't be in > 10.1. > > rick > ps: If you could test with 10.2, it would be interesting to see how the ix > does with > the current driver fixes in it? I new TSO was involved! ok, firstly, it’s 10.2 stable. with TSO enabled, ix is bad, around 64MGB/s. disabling TSO it’s better, around 130 still, mlxen0 is about 250! with and without TSO > >>> On Mon, Aug 17, 2015 at 6:41 AM, Slawa Olhovchenkov <s...@zxy.spb.ru >>> <mailto:s...@zxy.spb.ru>> wrote: >>> On Mon, Aug 17, 2015 at 10:27:41AM +0300, Daniel Braniss wrote: >>> >>>> 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. >>> >>> Look like mellanox have internal beffer for caching and do ACK acclerating. >>> >>>> 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? >>> >>> Are you sure about netapp performance? >>> _______________________________________________ >>> freebsd-...@freebsd.org <mailto:freebsd-...@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-unsubscr...@freebsd.org >>> <mailto:freebsd-net-unsubscr...@freebsd.org>" >>> >> >> _______________________________________________ >> freebsd-stable@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-stable >> To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org" _______________________________________________ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"