> Are they big files that should tax the network? If so, you're probably
> maxing out the network in which case it's "normal" and not a reason for
> concern. I've heard people target 5% collisions. You can check each
> machine's interface with ifconfig (or, I guess newer distro's use ip): I
> believe you divide the collisions by the bytes out. If the error
> rate seems
> high then maybe you have some trouble to worry about.
>
> As I understand it, you should be able to get about half the bandwidth. A
> 100 Mb connection will transfer 50*1000*1024/8 bytes per second (half the
> 100 times a million bits divided by 8 bits per byte). Are you
> getting these
> kind of throughputs?
pn] Well, I just ftp'ed on again to check. It transferred a 639,453,184
byte file in 132.83 seconds for 4814.11Kbytes/sec. Isn't this only about
38.5Mb/sec? This is with no other significant activity on the network. Not
that's it's bad (overall), but I'm just wondering if it is normal or if it
indicates a problem somewhere.
pn] I didn't know the exact ip command ("man ip" is no help), and I'm about
to wipe this Red Hat 6.2 box in favor of SuSE 7.1. So I couldn't get the
collisions count you mentioned above. Anybody wanna make an offer on a
hardly-used boxed RH7.1 Pro? :)
> Finally, I thought that with hubs you had a single, lowest-demoninator
> speed... so if one connecting card was 10 Mb then all connections would be
> 10Mb... I could be wrong about this.
pn] On this hub, there are lights for each speed. It uses the lowest speed
between the NICs being used (100 in this case).
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