Subject: Re: NetBSD 1.6.2 ping times again
To: Donald Lee <MacPPC@caution.icompute.com>
From: Nathan J. Williams <nathanw@wasabisystems.com>
List: port-macppc
Date: 07/15/2004 00:58:05
Donald Lee <MacPPC@caution.icompute.com> writes:

> I just spent some time trying to figure out why the NetBSD 1.6.2
> kernel appears to be delaying ping reponses to the next
> minor system clock tick, causing each ping to take a multiple of
> 10 ms to complete.

What hardware?

This peoblem doesn't appear to exist on -current on a PowerMac G4,
anyway.

5 mac-g4:nathanw>ping mtm
PING marvin-the-martian.nathanw.com (10.1.0.1): 56 data bytes
64 bytes from 10.1.0.1: icmp_seq=0 ttl=255 time=0.221 ms
64 bytes from 10.1.0.1: icmp_seq=1 ttl=255 time=0.292 ms
64 bytes from 10.1.0.1: icmp_seq=2 ttl=255 time=0.286 ms
64 bytes from 10.1.0.1: icmp_seq=3 ttl=255 time=0.257 ms
64 bytes from 10.1.0.1: icmp_seq=4 ttl=255 time=0.298 ms
64 bytes from 10.1.0.1: icmp_seq=5 ttl=255 time=0.275 ms
64 bytes from 10.1.0.1: icmp_seq=6 ttl=255 time=0.274 ms
64 bytes from 10.1.0.1: icmp_seq=7 ttl=255 time=0.270 ms
64 bytes from 10.1.0.1: icmp_seq=8 ttl=255 time=0.276 ms
64 bytes from 10.1.0.1: icmp_seq=9 ttl=255 time=0.248 ms

bm0 at obio0 offset 0x11000 irq 42,33: address 00:50:e4:99:d6:19
lxtphy0 at bm0 phy 0: LXT970 10/100 media interface, rev. 3
lxtphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto

NetBSD mac-g4.nathanw.com 2.0G NetBSD 2.0G (G4) #11: Wed Jul  7
15:58:59 EDT 2004 nathanw@marvin-the-martian.nathanw.com:/nbsd/src/sys/arch/macppc/compile/G4 macppc

        - Nathan