The driver does not calculate what it needs, it just keeps taking :) Hmmm, well it would be difficult to calculate a real total, as each instance of the driver (one per port) has no idea about other instances. I suppose there could be a display of the total needed per port?
Jack On Fri, Nov 21, 2014 at 12:34 PM, David DeSimone <ddesim...@verio.net> wrote: > Would it be possible for the driver to report how many clusters it > calculated that it needs, whenever it runs into this memory shortage during > attach? That way an administrator might have some idea how much to > increase their tunables in order to meet the driver's requirements. > > As it is, it's merely a guessing game or requires digging into driver > source to come up with the right numbers. > > > -----Original Message----- > From: owner-freebsd-...@freebsd.org [mailto:owner-freebsd-...@freebsd.org] > On Behalf Of Jack Vogel > Sent: Friday, November 21, 2014 10:23 AM > To: Gerrit Kühn > Cc: FreeBSD Net > Subject: Re: igb Could not setup receive structures (again) > > The message is pretty straightforward, its only cause is the inability > of the driver to get the necessary clusters to populate the RX rings. > > After you get the error do a `netstat -m` and see what the state of the > 9K jumbo pool is, for that is the size you would be using. > > Depending on the specific device type you may have up to 8 rings > per interface, and with a ring size of 1K... > > It does seem like you should have enough, but maybe something else > in your system is using the pool? As I said, look at netstat, it should > give > you the truth, and then adjust the allocated size to fit your needs. > > Jack > > > On Fri, Nov 21, 2014 at 2:48 AM, Gerrit Kühn <gerrit.ku...@aei.mpg.de> > wrote: > > > Hi all, > > > > I get the error message above when trying to go for jumbo frames (mtu > > 9000) on a system here. I found a lot of comments on this, but they all > > state that this is due to a too low setting for mbufs in FreeBSD8/9 > > settings. > > However, I have 10-stable here, and the settings look rather high to me: > > > > kern.ipc.nmbclusters: 1014856 > > kern.ipc.maxmbufmem: 8313700352 > > kern.ipc.nmbufs: 6495090 > > kern.ipc.nmbjumbop: 507428 > > kern.ipc.nmbjumbo9: 451047 > > kern.ipc.nmbjumbo16: 338284 > > > > FreeBSD mclane 10.0-STABLE FreeBSD 10.0-STABLE #5 r261710: Mon Feb 10 > > 16:55:29 CET 2014 r...@mclane.rt.aei.uni-hannover.de: > /usr/obj/usr/src/sys/GENERIC > > amd64 > > > > > > Is this still too low? I have a 6core machine with 6 igb interfaces, and > I > > cannot even get one of these set to mtu 9000 without getting "Could not > > setup receive structures". > > > > > > cu > > Gerrit > > _______________________________________________ > > freebsd-net@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-net > > To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org" > > > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org" > This email message is intended for the use of the person to whom it has > been sent, and may contain information that is confidential or legally > protected. If you are not the intended recipient or have received this > message in error, you are not authorized to copy, distribute, or otherwise > use this message or its attachments. Please notify the sender immediately > by return e-mail and permanently delete this message and any attachments. > Verio Inc. makes no warranty that this email is error or virus free. Thank > you. > _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
