Re: heavy network load

The original author of the scheduler has come up with this patch
which should fix the issue. Please test the attached patch.

On Sat, Oct 06, 2007 at 02:49:01PM +0900, Katsuji Ishikawa wrote:
> Hi .
> I use -CURRENT on Parallels Desktop(Mac OS X). It works very fine.
> But today I csup'ed and installed these. After that, I encountered
> network problem..
> 
> 
> Details:
> 
> Host: Parallels Desktop (Mac OS X) , 192.168.0.3
> Guest: FreeBSD-CURRENT , 192.168.0.6
> 
> before (Old current)
> katsuji_at_hexley% ping 192.168.0.6
> PING 192.168.0.6 (192.168.0.6): 56 data bytes
> 64 bytes from 192.168.0.6: icmp_seq=0 ttl=64 time=0.462 ms
> 64 bytes from 192.168.0.6: icmp_seq=1 ttl=64 time=0.623 ms
> 64 bytes from 192.168.0.6: icmp_seq=2 ttl=64 time=0.497 ms
> 64 bytes from 192.168.0.6: icmp_seq=3 ttl=64 time=0.571 ms
> 64 bytes from 192.168.0.6: icmp_seq=4 ttl=64 time=0.610 ms
> 64 bytes from 192.168.0.6: icmp_seq=5 ttl=64 time=0.510 ms
> ^C
> --- 192.168.0.6 ping statistics ---
> 6 packets transmitted, 6 packets received, 0% packet loss
> round-trip min/avg/max/stddev = 0.462/0.545/0.623/0.060 ms
> 
> 
> after (csuped today, occured packet loss...)
> katsuji_at_hexley% ping 192.168.0.6
> PING 192.168.0.6 (192.168.0.6): 56 data bytes
> 64 bytes from 192.168.0.6: icmp_seq=0 ttl=64 time=4397.146 ms
> 64 bytes from 192.168.0.6: icmp_seq=1 ttl=64 time=3397.082 ms
> 64 bytes from 192.168.0.6: icmp_seq=2 ttl=64 time=2397.021 ms
> 64 bytes from 192.168.0.6: icmp_seq=3 ttl=64 time=1395.493 ms
> 64 bytes from 192.168.0.6: icmp_seq=4 ttl=64 time=393.692 ms
> ^C
> --- 192.168.0.6 ping statistics ---
> 11 packets transmitted, 5 packets received, 54% packet loss
> round-trip min/avg/max/stddev = 393.692/2396.087/4397.146/1415.415 ms
> 
> 
> kernel configuration:
> 
> katsuji_at_seven% cat ULE3                         [/sys/i386/conf]
> include         GENERIC
> ident           ULE3
> 
> nooptions       SCHED_4BSD
> options         SCHED_ULE
> 
> 
> Have you any good ideas?
> 
> Regards,
> 
> -- 
> Katsuji ISHIKAWA <k.ishish_at_gmail.com>
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-- 
Christian S.J. Peron
csjp_at_FreeBSD.ORG
FreeBSD Committer