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SubjectRE: netdev issues (3c905B)
Date
Hi Martin,

Here's /proc/interrupts:

CPU0 CPU1
0: 2748043 2754927 IO-APIC-edge timer
1: 2 0 IO-APIC-edge keyboard
2: 0 0 XT-PIC cascade
4: 2737 2892 IO-APIC-edge serial
17: 9573612 9568840 IO-APIC-level eth0
18: 483436 482421 IO-APIC-level aic7xxx
NMI: 5505505 5505399
LOC: 5502609 5502508
ERR: 0

-Vibol

-----Original Message-----
From: linux-kernel-owner@vger.kernel.org
[mailto:linux-kernel-owner@vger.kernel.org]On Behalf Of Martin Moerman
Sent: Tuesday, February 20, 2001 4:22 PM
To: Vibol Hou
Cc: Linux-Kernel
Subject: Re: netdev issues (3c905B)



Vibol,

I see that the card is on IRQ 17 ???

can you send us /proc/interrupts

/Martin


On Tue, 20 Feb 2001, Vibol Hou wrote:

> Hi,
>
> I have some problems on a heavily loaded web server. The first is that
the
> kernel is spitting out a bunch of "NETDEV WATCHDOG: eth0: transmit timed
> out" errors. I do not recall this happening in 2.4.0 under the same
> conditions.
>
> Another problem that I seem to have, of which I have had reports from
> clients, is that the server has problems talking to clients using modems
> This didn't occur before with the 2.2 series kernel (all other things held
> constant). It seems each time a client tries to load up any site on the
> server, the connection will just die (or stall). This does not apply to
> high-bandwidth connections (DSL and up) since everything seems fine on DSL
> and faster, but I tried connecting using my dial-up account with
Earthlink,
> and the reports seem to be true. Can those of you on a 56k modem try
> connecting to http://khmerconnection.com and see if the page loads?
Apache
> isn't the only service affected. It seems *any* TCP communication runs
like
> a turtle (even SSH. takes minutes to login, then minutes to echo each
> letter. doesn't do this on a DSL connection from the same computer).
>
> The card that is exhibiting this problem is a 3c905B (lspci below):
>
> 00:08.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone]
> (rev 30)
> Subsystem: 3Com Corporation: Unknown device 9055
> Flags: bus master, medium devsel, latency 80, IRQ 17
> I/O ports at e400 [size=128]
> Memory at e8001000 (32-bit, non-prefetchable) [size=128]
> Expansion ROM at e4000000 [disabled] [size=128K]
> Capabilities: [dc] Power Management version 1
>
> dmesg shows hordes of these at high peak usage (300KBps+):
>
> NETDEV WATCHDOG: eth0: transmit timed out
> eth0: transmit timed out, tx_status 00 status e601.
> diagnostics: net 0cd8 media 8880 dma 0000003a.
> eth0: Interrupt posted but not delivered -- IRQ blocked by another device?
> Flags; bus-master 1, full 0; dirty 9256291(3) current 9256291(3).
> Transmit list 00000000 vs. f7de5230.
> 0: @f7de5200 length 80000042 status 00010042
> 1: @f7de5210 length 8000004a status 8001004a
> 2: @f7de5220 length 80000036 status 80010036
> 3: @f7de5230 length 80000036 status 00010036
> 4: @f7de5240 length 80000042 status 00010042
> 5: @f7de5250 length 80000036 status 00010036
> 6: @f7de5260 length 800005ea status 000105ea
> 7: @f7de5270 length 800005ea status 000105ea
> 8: @f7de5280 length 8000003a status 0001003a
> 9: @f7de5290 length 8000003e status 0001003e
> 10: @f7de52a0 length 8000003a status 0001003a
> 11: @f7de52b0 length 8000003e status 0001003e
> 12: @f7de52c0 length 8000003e status 0001003e
> 13: @f7de52d0 length 8000004a status 0001004a
> 14: @f7de52e0 length 8000004a status 0001004a
> 15: @f7de52f0 length 8000003e status 0001003e
> eth0: Resetting the Tx ring pointer.
>
> Any ideas?
>
> Thanks,
> --
> Vibol Hou
>
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