Date: Fri, 25 Apr 2014 15:02:15 +0100 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Marek Salwerowicz" <marek_sal@wp.pl>, =?iso-8859-1?Q?Gerrit_K=FChn?= <gerrit.kuehn@aei.mpg.de> Cc: freebsd-net@freebsd.org Subject: Re: NFS over LAGG / lacp poor performance Message-ID: <4E7A280CACC84910A3DE068085976E30@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> <535A5DD9.9060206@wp.pl> <AC1233D368D94519BB59B484D6F385C0@multiplay.co.uk> <535A69CE.9010800@wp.pl>
next in thread | previous in thread | raw e-mail | index | archive | help
----- Original Message -----
From: "Marek Salwerowicz" <marek_sal@wp.pl>
To: "Steven Hartland" <killing@multiplay.co.uk>; "Gerrit Kühn" <gerrit.kuehn@aei.mpg.de>
Cc: <freebsd-net@freebsd.org>
Sent: Friday, April 25, 2014 2:57 PM
Subject: Re: NFS over LAGG / lacp poor performance
>W dniu 2014-04-25 15:27, Steven Hartland pisze:
>> In that case I believe you've hard coded the number of queues, check
>> /boot/loader.conf
>> for references to this.
>
> Yes, that's true:
>
> % cat /boot/loader.conf
> debug.acpi.max_tasks="128"
> if_lagg_load="YES"
> kern.ipc.nmbclusters="131072"
> hw.igb.num_queues="1"
>
>
> I am wondering why I have turned this on..
> My box has raidz2 ZFS box with SSD mirrored log..
We find that large numbers of queues causes high interrupt issues
however at a guess you did this to enable the machine to boot with
all nics due to lack of auto mbuf tuning in 9.x.
I'd go with ~2 queues per nic.
Regards
Steve
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4E7A280CACC84910A3DE068085976E30>