<<On Fri, 8 Mar 2013 12:13:28 -0800, Jack Vogel <jfvo...@gmail.com> said:
> Yes, in the past the code was in this form, it should work fine Garrett, > just make sure > the 4K pool is large enough. [Andre Oppermann's patch:] >> if (adapter->max_frame_size <= 2048) adapter-> rx_mbuf_sz = MCLBYTES; >> - else if (adapter->max_frame_size <= 4096) >> + else adapter-> rx_mbuf_sz = MJUMPAGESIZE; >> - else if (adapter->max_frame_size <= 9216) >> - adapter->rx_mbuf_sz = MJUM9BYTES; >> - else >> - adapter->rx_mbuf_sz = MJUM16BYTES; So I tried exactly this, and it certainly worked insofar as only 4k clusters were allocated, but NFS performance went down precipitously (to fewer than 100 ops/s where normally it would be doing 2000 ops/s). I took a tcpdump while it was in this state, which I will try to make some sense of when I get back to the office. (It wasn't livelocked; in fact, the server was mostly idle, but responses would take seconds rather than milliseconds -- assuming the client could even successfully mount the server at all, which the Debian automounter frequently refused to do.) I ended up reverting back to the old kernel (which I managed to lose the sources for), and once I get my second server up, I will try to do some more testing to see if I can identify the source of the problem. -GAWollman _______________________________________________ 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"
