On Thu, Apr 14, 2011 at 9:44 PM, Leon Meßner <l.mess...@physik.tu-berlin.de> wrote: > On Thu, Apr 14, 2011 at 08:55:17PM +0200, K. Macy wrote: >> That isn't guaranteed to work if he is KVA limited. >> >> On Thu, Apr 14, 2011 at 6:44 PM, Jack Vogel <jfvo...@gmail.com> wrote: >> > If you get this message its only for one reason, you don't have enough >> > mbufs >> > to >> > fill your rings. You must do one of two things, either reduce the number of >> > queues, >> > or increase the relevant mbuf pool. >> > >> > Increase the 9K mbuf cluster pool. > > I did set it to twice the default, and now it works and netstat -m > shows: > > 8192/391/8583/12800 9k jumbo clusters in use (current/cache/total/max) > > Whats a reasonable amount to set kern.ipc.nmbjumbo9 to and is there > any > form of auto-tuning (i have absolutely no load on this machine and > mbufs > are higher than default pool size).
The auto-tuning for jumbo clusters works poorly at best. It isn't load consuming them, it is the preallocation to large receive queues. > > Thanks to all, > Leon > >> > On Thu, Apr 14, 2011 at 6:05 AM, Leon Meßner >> > <l.mess...@physik.tu-berlin.de>wrote: >> > >> >> Hi, >> >> >> >> i tried setting the mtu on one of my ixgbe(4) intel NICs to support >> >> jumbo frames. This is on a box with RELENG_8 from today. >> >> >> >> # ifconfig ix0 mtu 9198 >> >> >> >> I then get the following error: >> >> >> >> # tail -n 1 /var/log/messages >> >> Apr 14 12:48:43 siloneu kernel: ix0: Could not setup receive structures >> >> >> >> I already tried the following patch because of Jack Vogel's advice given >> >> in the following thread on -stable in Oct. last year, which still >> >> produces the same error message and leaves the box unpingable: >> >> >> >> http://lists.freebsd.org/pipermail/freebsd-stable/2010-October/059541.html >> >> >> >> # cat ~/patches/ixgbe.num_queues_to_4.patch >> >> --- /root/.vimbackup/ixgbe.c~ 2011-04-12 22:14:27.000000000 +0000 >> >> +++ sys/dev/ixgbe/ixgbe.c 2011-04-12 22:14:27.000000000 +0000 >> >> @@ -273,7 +273,7 @@ TUNABLE_INT("hw.ixgbe.hdr_split", &ixgbe >> >> * number of cpus. Each queue is a pair >> >> * of RX and TX rings with a msix vector >> >> */ >> >> -static int ixgbe_num_queues = 0; >> >> +static int ixgbe_num_queues = 4; >> >> TUNABLE_INT("hw.ixgbe.num_queues", &ixgbe_num_queues); >> >> >> >> /* >> >> >> >> _______________________________________________ >> >> freebsd-stable@freebsd.org mailing list >> >> http://lists.freebsd.org/mailman/listinfo/freebsd-stable >> >> To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org" >> >> >> > _______________________________________________ >> > freebsd-stable@freebsd.org mailing list >> > http://lists.freebsd.org/mailman/listinfo/freebsd-stable >> > To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org" >> > >> _______________________________________________ >> freebsd-stable@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-stable >> To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org" > _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
