On Mon 2016-11-28 07:31:43, Eric Dumazet wrote: > On Mon, 2016-11-28 at 09:54 -0500, David Miller wrote: > > From: Lino Sanfilippo <lsan...@marvell.com> > > Date: Mon, 28 Nov 2016 14:07:51 +0100 > > > > > Calling skb_orphan() in the xmit handler made this issue disappear. > > > > This is not the way to handle this problem. > > > > The solution is to free the SKBs in a timely manner after the > > chip has transmitted the frame. > > Note that the 'pauses' described by Pavel are also caused by a too small > SO_SNDBUF value on the UDP socket. > > An immediate fix, with no kernel change is to increase it. > > echo 1000000 >/proc/sys/net/core/wmem_default
Thanks a lot. For the record, that works around the problem, too. (Or
at least helps a lot; it may be possible that problem still remains if
continuous stream of packets is going to trigger this, if I read the
sources correctly.)
Best regards,
Pavel
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