kern/123621: Quagga - zebra high processing

[cktan]

>Number:         123621
>Category:       kern
>Synopsis:       Quagga - zebra high processing
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue May 13 02:50:03 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     cktan
>Release:        7.0 Stable
>Organization:
OCESB
>Environment:
FreeBSD Router1 7.0-STABLE FreeBSD 7.0-STABLE #0: Wed Apr 23 08:57:11 MYT 2008     root at backup:/usr/obj/usr/src/sys/GENERIC  i386
>Description:
We are using freebsd for all our OSPF and BGP routers in our Metro Network. In freebsd 6.x, the interrupt is very high if the traffic increase.. However, Freebsd 7.0, the interrupt issue is improve a lot (at least 10x improve). But the new issue come out whereby the Zebra daemon is CPU utilization is very high as running on 40% if the traffic for that router go up to 80Mbps. This is not happen to 6.x routers but only 7.0 routers which currently I've 3 units and all of them have the same issue. 


top:

1273 root        1  69    0 70120K 66632K select 1  26.8H 32.76% zebra

>How-To-Repeat:

>Fix:


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