On 11 Aug 2014, at 14:12, Eggert, Lars <l...@netapp.com> wrote: > On 2014-8-11, at 9:17, Michael Tuexen <michael.tue...@lurchi.franken.de> > wrote: >> Was there any suspicious output provided by netstat -m when the problems >> occur? > > root@laurel:~ # netstat -m > 8186/2179/10365 mbufs in use (current/cache/total) > 8184/1214/9398/2036224 mbuf clusters in use (current/cache/total/max) > 8184/885 mbuf+clusters out of packet secondary zone in use (current/cache) > 0/5/5/1018111 4k (page size) jumbo clusters in use (current/cache/total/max) > 0/0/0/301662 9k jumbo clusters in use (current/cache/total/max) > 0/0/0/169685 16k jumbo clusters in use (current/cache/total/max) > 18414K/2992K/21407K bytes allocated to network (current/cache/total) > 544/57/8194 requests for mbufs denied (mbufs/clusters/mbuf+clusters) I guess the above is the problem. The card wants a lot of mbufs... So the problem should go away if you increase the number of mbufs/clusters, which means no requests are denied and you don't experience any performance issue. I ran into this on machines having several igb and ixgbe cards, each wanting a lot of clusters for each of the receive rings per receive queue...
Best regards Michael > 0/0/0 requests for mbufs delayed (mbufs/clusters/mbuf+clusters) > 0/0/0 requests for jumbo clusters delayed (4k/9k/16k) > 0/0/0 requests for jumbo clusters denied (4k/9k/16k) > 0 requests for sfbufs denied > 0 requests for sfbufs delayed > 0 requests for I/O initiated by sendfile > > root@laurel:~ # uptime > 2:12PM up 37 mins, 3 users, load averages: 0.20, 0.25, 0.15 > > Lars _______________________________________________ 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"
