On Fri, 2015-07-31 at 16:42 +0530, Prashant Upadhyaya wrote: > On Fri, Jul 31, 2015 at 1:26 PM, Eric Dumazet <eric.duma...@gmail.com> wrote: > > On Fri, 2015-07-31 at 12:30 +0530, Prashant Upadhyaya wrote: > > > >> The delays work for me but is clearly not good for the performance of > >> the slow path. And more importantly, I was looking for a fundamental > >> reason regarding why it works with delays and why not without it. The > >> issue is reproducible with a big ping (3.11.10-301.fc20.x86_64) > > > > How big ping needs to be to reproduce the problem ? > > > > > > If the MTU is 1500, I start getting problems anywhere starting from > 2900 bytes and surely comes when further big pings are used eg. 10 K. > (ping <IP> -s <Size> eg. ping 10.3.10.244 -s 10000) > And the big pings do work, as I said, with the delay hack.
It might help trying this while you receive such frags : perf record -a -g skb:kfree_skb sleep 10 ... perf report -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
