Date: Fri, 25 Apr 2014 15:06:33 +0200 From: Marek Salwerowicz <marek_sal@wp.pl> To: Steven Hartland <killing@multiplay.co.uk>, =?ISO-8859-1?Q?Gerrit_K=FC?= =?ISO-8859-1?Q?hn?= <gerrit.kuehn@aei.mpg.de> Cc: freebsd-net@freebsd.org Subject: Re: NFS over LAGG / lacp poor performance Message-ID: <535A5DD9.9060206@wp.pl> In-Reply-To: <8247FE6336414E1F97ADA561D0680097@multiplay.co.uk> References: <535A1354.2040309@wp.pl> <20140425113711.e7c7d1c2.gerrit.kuehn@aei.mpg.de> <535A482E.1030106@wp.pl> <20140425140123.a76c18f9.gerrit.kuehn@aei.mpg.de> <535A5268.100@wp.pl> <8247FE6336414E1F97ADA561D0680097@multiplay.co.uk>
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W dniu 2014-04-25 14:55, Steven Hartland pisze: > ----- Original Message ----- From: "Marek Salwerowicz" <marek_sal@wp.pl> > > >> W dniu 2014-04-25 14:01, Gerrit Kühn pisze: >>> Thanks for your input. As far as I understood so far, there should >>> be one >>> igb queue created per cpu core in the system by default (and this is >>> what >>> I see on my system). But my irq rate looks quite high to me (and it is >>> only on one of these queues). >> >> >> My CPU has 8 cores: >> >> http://ark.intel.com/products/75267/Intel-Xeon-Processor-E5-2640-v2-20M-Cache-2_00-GHz >> >> >> So why do I have only 1 queue ? > > What does "sysctl hw.igb.num_queues" report? storage1% sysctl hw.igb.num_queues hw.igb.num_queues: 1 > > num_queues does default to 1 for Legacy or MSI so you might be hitting > that. > > Do you see "Using MSIX interrupts with" in your dmesg? storage% dmesg | grep MSIX igb0: Using MSIX interrupts with 2 vectors igb1: Using MSIX interrupts with 2 vectors igb2: Using MSIX interrupts with 2 vectors igb3: Using MSIX interrupts with 2 vectors igb0: Using MSIX interrupts with 2 vectors igb1: Using MSIX interrupts with 2 vectors igb2: Using MSIX interrupts with 2 vectors igb3: Using MSIX interrupts with 2 vectors -- Marek
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