On 08/25/2017 04:57 PM, Eric Dumazet wrote: > On Fri, 2017-08-25 at 16:18 -0700, Florian Fainelli wrote: > >> Eric, are there areas of the stack where we are allowed to drop packets, >> not propagate that back to write(2) and also not increment any counter >> either, or maybe I am not looking where I should... > > What happens if you increase these sysctls ?
I don't see packet loss after I tweak these two sysctls according to your suggestions. Tweaking eth0's sysctls did not change anything, but tweaking gphy's sysctl resolved the loss. This was a little surprising considering that gphy is an IFF_NO_QUEUE interface and eth0 is the conduit interface that does the real transmission. Does that make sense with respect to what I reported earlier? Should I try to dump the neigh stats? Thanks! > > grep . `find /proc/sys|grep unres_qlen` > > > unres_qlen_bytes -> 2000000 > unres_qlen -> 10000 > > -- Florian
