Subject: tlp errors
To: None <email@example.com>
From: Ray Phillips <firstname.lastname@example.org>
Date: 04/17/2002 09:38:15
I thought I'd report some tlp errors which appeared on my AS200
4/166's console yesterday and today, viz.
tlp0: incoming packet spilled, resetting
tlp0: receive ring overrun
appeared repeatedly on the console until I rebooted it, after which
tlp0: receive error: MII error
tlp0: receive error: dribbling bit
tlp0: receive error: CRC error
showed up a couple of times.
I'd been using de for some weeks before switching to tlp and hadn't
seen any errors. More details are appended to this message.
Shortly before the "packet spilled errors" appeared I'd been ftping a
~ 470 MB file to the machine a number of times. I didn't notice, but
it's possible they began to occur during those sessions--the transfer
rate certainly slowed down a lot, e.g. from 902.79 KB/s to 125.18
KB/s (averaged over the whole transfer).
The AS200 has 144 MB RAM, is using its built in network card, and is
running NetBSD/alpha 1.5.2. This is part of its dmesg's output:
tlp0 at pci0 dev 11 function 0: DECchip 21040 Ethernet, pass 2.3
tlp0: interrupting at isa irq 5
tlp0: Ethernet address 08:00:2b:e7:b5:17
tlp0: 10baseT, 10baseT-FDX, 10base5, manual
The source of the file was a SparcStation 10 with 448 MB RAM using
the le0 driver for its internal 10baseT interface, and running
NetBSD/sparc 1.5.2. I also tried fetching it from a PC with 128 MB
RAM, a 10/100baseT card which was using the rtk driver, and running
The point of the ftp'ing exercise was to see if there was a
noticeable difference in performance between the de and tlp drivers:
I moved the file between the machines a few times with both the de
and tlp drivers.
To make the two kernels for the tests, I applied the SA2002-001
ptrace patch to the 1.5.2 sys source tree I made a copy of the
GENERIC configuration file and enabled KERNFS in it; the de kernel
was built from that. The tlp kernel config file was the same except
de* at pci? dev ? function ? # 21x4x-based Ethernet
was commented out and
tlp* at pci? dev ? function ? # DECchip 21x4x and clones