From owner-freebsd-bugs  Fri Aug 11 18:50: 5 2000
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Date: Fri, 11 Aug 2000 18:46:39 -0700 (PDT)
From: xyf@stocke.com
To: freebsd-gnats-submit@FreeBSD.org
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Subject: misc/20555: 3C509 driver performance problem
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>Number:         20555
>Category:       misc
>Synopsis:       3C509 driver performance problem
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Aug 11 18:50:01 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     xuyifeng
>Release:        FreeBSD 4.0
>Organization:
stocke.com
>Environment:
>Description:
I just freshly installed Redhat Linux 6.2 and FreeBSD 4.0 on same
machine,  I run ApacheBench program ab on another
Linux machine to test the both OS, both OS have same Apache config options, using command:

    ab -c 10 -n 10000 http://192.168.1.27/index.html

they both give me good performance, the result is almost same, but ...
FreeBSD uses more CPU time than Linux, FreeBSD CPU idle is 40%,
Linux CPU idle is 60%, almost 20% CPU lost in FreeBSD!

I use "top" command and see FreeBSD cost 34% of CPU time in interrupt
handling, the system time is good, only 12%, my net card is old 3COM 3C509, my question is:

  is this the problem of 3C509 driver in FreeBSD  or  just is more serious FreeBSD design problem?


>How-To-Repeat:
from another machine run apache benchmark program to pull FreeBSD,

    ab -c 10 -n 10000 http://192.168.1.27/index.html


>Fix:
don't kown

>Release-Note:
>Audit-Trail:
>Unformatted:


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