Alignment errors (update)

[Daniele Orlandi]

Donald Becker wrote:
> 
> What about netperf or ttcp while you generate a lot of PCI bus traffic?
> Perhaps reading your whole disk in the background.

Bingo!

Started netperf, no alignment errors...

Started copying big files from one disk to another, immediately the alignment
errors began to raise at a rate of about 200/second.
The disks are two 6 GB UDMA EIDE disks.

hdc: FUJITSU MPB3064ATU, 6187MB w/0kB Cache, CHS=13410/15/63, DMA
hdd: FUJITSU MPB3064ATU E, 6187MB w/0kB Cache, CHS=13410/15/63, DMA

> This might indicate a problem with the FIFO threshold or PCI burst length
> settings.  (The driver currently uses the recommended defaults.)

The FIFO probably has much to do with my problem:

[root@etabeta /]# cat /proc/net/dev
Inter-|   Receive                  |  Transmit
 face |packets errs drop fifo frame|packets errs drop fifo colls carrier
    lo: 242667    0    0    0    0   242667    0    0    0     0    0
  eth0:2210414    0    0    0    0  3557684    0    0 37264     0    0

All these 37000 fifo errors were generated in few minutes.

Well, what should I do now ?

(Now I'm going to try to play with my BIOS settings to see if something changes,
I'll let you know if something happens).

Thanks very much !

Bye!

-- 
 Daniele

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 Daniele Orlandi - Utility Line Italia - http://www.orlandi.com
 Via Mezzera 29/A - 20030 - Seveso (MI) - Italy
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