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Date: Tue, 25 Jul 2006 14:36:03 +0200
From: Jeremie Le Hen <jeremie@le-hen.org>
To: Jack Vogel <jfvogel@gmail.com>
Message-ID: <20060725123603.GH6253@obiwan.tataz.chchile.org>
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Cc: freebsd-current@freebsd.org, Jeremie Le Hen <jeremie@le-hen.org>
Subject: Re: [fbsd] Re: em(4) watchdog timeout
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On Fri, Jul 21, 2006 at 09:27:31AM -0700, Jack Vogel wrote:
> hitting watchdog means you have a hang of some sort.
> try 'sysctl dev.em.0.debug_info=1' and see if that gives any clues.

dev.em.0.debug_info:
% em0: Adapter hardware address = 0xc2a32130 
% em0: CTRL = 0x18f00241 RCTL = 0x801a 
% em0: Packet buffer = Tx=16k Rx=48k 
% em0: Flow control watermarks high = 47104 low = 45604
% em0: tx_int_delay = 66, tx_abs_int_delay = 66
% em0: rx_int_delay = 0, rx_abs_int_delay = 66
% em0: fifo workaround = 0, fifo_reset_count = 0
% em0: hw tdh = 149, hw tdt = 149
% em0: Num Tx descriptors avail = 256
% em0: Tx Descriptors not avail1 = 0
% em0: Tx Descriptors not avail2 = 0
% em0: Std mbuf failed = 0
% em0: Std mbuf cluster failed = 0
% em0: Driver dropped packets = 0

dev.em.0.stats:
% em0: Excessive collisions = 0
% em0: Symbol errors = 0
% em0: Sequence errors = 0
% em0: Defer count = 0
% em0: Missed Packets = 0
% em0: Receive No Buffers = 0
% em0: Receive length errors = 0
% em0: Receive errors = 0
% em0: Crc errors = 0
% em0: Alignment errors = 0
% em0: Carrier extension errors = 0
% em0: RX overruns = 0
% em0: watchdog timeouts = 6
% em0: XON Rcvd = 0
% em0: XON Xmtd = 0
% em0: XOFF Rcvd = 0
% em0: XOFF Xmtd = 0
% em0: Good Packets Rcvd = 3720143
% em0: Good Packets Xmtd = 1246413

Most of provided debugging informations are meaningless for me.
Is any minded soul able to understand this ?

Thank you,
-- 
Jeremie Le Hen
< jeremie at le-hen dot org >< ttz at chchile dot org >