On Tue, 16 Aug 2005, Anders Breindahl wrote:
> Please educate me: What exactly determines a NIC's reliability? What defines
> its effectiveness?
use 2 machines for all tests, but use the same nic card in both machines
scp machine1:/opt/test/10MB.tgz machine2:/opt/junk
----
try the same test with another pair of nic cards
----
during the tests... if you see "stalled" as an error message/warning
for scp:
- throw that nic card away ..
- or throw away the switch/hub (don't use one if you want to
eliminate the hubs/switches and use a cross over cable instead)
- or throw away your ethernet cables
- you cable should be xx' long and no more than
2(?) switch/routers between 2 machines ..
- or throw away the kernel and drivers
- or change your tcp/ip variable options
- or ???
- you should be able to run at 50% - 75% or faster of sustained bandwidth
between any 2 machines
- 100Mbps --> you should see 8MByte or 10MByte per sec transfers
( 1 second to transfer a 8MB file )
- given a choice ..
- i'd use intel chipsets ( on the motherboard ) or pci cards
- i'd avoid broadcom chipsets unless you know how to tweek the
kernel drivers
c ya
alvin
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