Subject: RE: interrupt storm
To: Bronstein Dan <D.Bronstein@flarion.com>
From: Matt Thomas <matt@3am-software.com>
List: tech-embed
Date: 03/25/2004 15:24:02
At 03:09 PM 3/25/2004, Bronstein Dan wrote:
>I compiled the ethernet interface with event countered enabled.
>The following is from vmstat.
>
>event                                         total     rate type
>wm0 txdw                                       2008        0 intr
>wm0 rxintr                                    29948       11 intr
>wm0 linkintr                                      2        0 intr
>wm0 txseg1                                     2426        0 misc
>wm0 txseg2                                       43        0 misc
>wm0 txseg3                                       12        0 misc
>
>I haven't added any dynamic system event counters to the wan driver,
>but I did add some interrupt counters that I check from ddb.  The
>actual processing (handling) of the wan interrupts is very low, but
>the count that gets updated on entry into the interrupt handler is
>exceedingly high after enabling one of the t1 ports.  Once the port
>is enabled, the only thing I can do is to break into the kernel
>debugger since it seems like nothing else is happening other than pci
>Int11's.  BTW.. I did check the ethernet event counts from ddb and
>they're reasonable.

from ddb

db> show event

What platform is this on?

-- 
Matt Thomas                     email: matt@3am-software.com
3am Software Foundry              www: http://3am-software.com/bio/matt/
Cupertino, CA              disclaimer: I avow all knowledge of this message.