Date: Fri, 25 Apr 2014 13:13:16 +0200 From: Robert Blacquiere <freebsd-net@blacquiere.nl> To: freebsd-net@freebsd.org Subject: Re: NFS over LAGG / lacp poor performance Message-ID: <20140425111316.GJ9177@calendar.blacquiere.nl> In-Reply-To: <535A1354.2040309@wp.pl> References: <535A1354.2040309@wp.pl>
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Hi Marek, On Fri, Apr 25, 2014 at 09:48:36AM +0200, Marek Salwerowicz wrote: > Hi list, > <snip> > Both boxes are connected to the same switch (HP 1910-48G) > > I need to transfer around 10 TB of data from storage1 to storage2 > I obeserve that during copying, only one NIC (instead of all 4) is used. > > Boxes are not stressed during copying > > What's more, apart from having 1 NIC saturated (transfer around 120 > MB/s), I observe transfer rate on level of 70-80 MB/s Default lacp 802.3ad works with mac based hashes to loadbalance traffic. So single host (mac) will be transfered by one ethernet adaptor as you have seen. > > I haven't changed any kernel configuration, nor sysctl's - am I missing > sth ? There are tuneables, i think, to change the hash from mac source : dest hash to session tcp source+port: dest:port but these might need also configuring on switch/network. Regards Robert Blacquiere
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