On Tue, May 14, 2013 at 4:55 AM, Stuart Henderson <s...@spacehopper.org> wrote: > Anyone have any ideas about how to improve TCP performance with huge > numbers of out-of-order packets? > > 62653661 packets received > 25373283 acks (for 43239433893 bytes) > 2225419 duplicate acks > 20139430 packets (21139432159 bytes) received in-sequence > 989606 completely duplicate packets (299125194 bytes) > 51753 old duplicate packets > 362 packets with some duplicate data (144255 bytes duplicated) > 15927761 out-of-order packets (19170915512 bytes) > 28812 packets (28812 bytes) of data after window > 28812 window probes > 259673 window update packets > 38231 packets received after close > 21 discarded for bad checksums > 26790492 packets hardware-checksummed >
Hi Stuart, Out of curiosity, what kind of link are you getting this on? What kind of hardware? I ask because I had something similar with a few of my Debian boxes. The problem was related to non-pegged interrupts on the E5-2600 Xeons. Cheers, --peter
