eth0 is S-L-O-W--outgoing, that is
How do I start diagnosing this?
Incoming data from the LAN is as fast as it should be, but
outgoing, whether Samba file transfer or POP3, looks like about
1/3 of one Mbit/s.
In addition, there seem to be pauses of several seconds in larger
transfers. Files or mail attachments that go over one MB often
time out during these pauses.
Debian 2.2, kernel 2.4.9 (A. Bunk's packages), acting as POP3
server, Samba print server, and NAT gateway.
The card is a D-Link DFE-530TX; takes the via-rhine driver. the
diagnostics program from Donald Becker's site shows it's linked
to the switch at a steady 100BASE-Tx.
Disk access, as far as hdparm -tT goes, seems normal for ATA-33.
(This is an Asus SP97-V board w SiS chipset, P233MMX CPU.)
During a long, slow file transfer, top doesn't show any excessive
CPU use--no process over 0.3%.
The iptables configuration is minimal: just the one NAT rule, and
incoming filters when the PPP link is up.
Other configuration info available of course. I'm clueless what
to do. Try other NICs on speculation? Downgrade the kernel
version?
How can I figure out where the problem is?
TIA,
Tony
--
-- Tony Crawford
-- tc@crawfords.de
-- +49-3341-30 99 99
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