**SPAM** Re: [Click] ..use cpu 100%

Eddie Kohler kohler at icir.org
Fri Oct 31 12:29:17 EST 2003


Hi Carlo,

First, fix your spam blocker.

Second, the configuration you supplied will, in fact, run at 100% CPU
utilization. The KernelTap element is always scheduled, and will continue
taking up CPU, trying to pull from its upstream Queue, even when the
upstream Queue is empty.

I'm going to check in a fix for this problem, but it will not be available
in Click 1.2.4, you'll have to upgrade to Click CVS and use the KernelTun
elemnet instead of KernelTap.  (KernelTun is better anyway.)

> now i can ping, transfer file in scp, ftp and http mode, but after i
> transfered about 10mb the router stalled and the receiver pc crash with
> error
> "eth1: ERROR-110 Writing Tx descriptor to BAP" and i must restart.

That's weird, a user-level configuration could not crash your
kernel. Probably a bug on the receiver pc.

Eddie


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