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Date: Tue, 08 Nov 2011 11:25:38 +0100 From: Eric Dumazet <eric.dumazet@...il.com> To: Chris Siebenmann <cks@...toronto.edu> Cc: netdev@...r.kernel.org Subject: Re: Bug? GRE tunnel periodically won't transmit some packets Le mardi 08 novembre 2011 à 08:34 +0100, Eric Dumazet a écrit : > Le mardi 08 novembre 2011 à 02:08 -0500, Chris Siebenmann a écrit : > > > Let me know if you want a full dump of 'ip link show' (with or > > without verbosity). > > > > - cks > > Oh yes, I meant "ip -s -s link show dev extun" > > to get detailed infos : > > # ip -s -s link show dev ppp0 > 8: ppp0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc > pfifo_fast state UNKNOWN qlen 3 > link/ppp > RX: bytes packets errors dropped overrun mcast > 21120910 21103 0 0 0 0 > RX errors: length crc frame fifo missed > 0 0 0 0 0 > TX: bytes packets errors dropped carrier collsns > 1310652 13736 0 0 0 0 > TX errors: aborted fifo window heartbeat > 0 0 0 0 > Hmm, by the way, I see the default device queue length of ppp is 3 You might have packet drops at the ppp0 device itself ip -s -s link show dev ppp0 ; tc -s -d qdisc show dev ppp0 You could try to increase ppp0 queue length or install a classifier with 128 packet limit. ifconfig ppp0 txqueuelen 32 or : tc qdisc add dev ppp0 root sfq -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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