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Date:      Sat, 5 Jan 2002 17:51:08 +0100
From:      Bernd Walter <ticso@cicely8.cicely.de>
To:        "Floris 'Tamama' van Gog" <floris@vangog.net>
Cc:        freebsd-alpha@FreeBSD.ORG
Subject:   Re: What could be wrong? very slow networking box
Message-ID:  <20020105175108.A15190@cicely8.cicely.de>
In-Reply-To: <004401c195fe$18378c90$9600000a@tamama>
References:  <004401c195fe$18378c90$9600000a@tamama>

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On Sat, Jan 05, 2002 at 04:31:49PM +0100, Floris 'Tamama' van Gog wrote:
> Holas,
> 
> I think this is not right
> 
> bloodscent# ping localhost
> PING localhost (127.0.0.1): 48 data bytes
> 64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=1.056 ms
> 64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.700 ms
> 64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.629 ms
> 64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.678 ms
> ^C
> --- localhost ping statistics ---
> 4 packets transmitted, 4 packets received, 0% packet loss
> round-trip min/avg/max/stddev = 0.629/0.766/1.056/0.170 ms
> bloodscent#
> 
> I can remember local loopbacks to be a 'tad' faster (0.008ms or
> something like that)

8µS are only 1328 clock cycles on your 166MHz System.
Memory bandwidth is much slower - hard to beleave.
Maybe you had run Linux - AFAIK Linux ping show seconds...

> Someone in #freebsd/undernet said it might be a hardware conflict
> somehow.
> 
> The machine is an AXPCI33 166Mhz with 64MB ram (well its in the dmesg
> below). When I had natd and pptpclient going to get internet
> connectivity for my LAN the connection got so slow that it was
> noticable. A game, mostly udp data, 7.5kb/sec made the uptime stats go
> to 1.54 1.30 1.20 (the gateway was only routing)

This is on a PC164, which is much faster than an AXPpci33:
ticso@cicely9> ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1): 48 data bytes
64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=0.144 ms
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.092 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.085 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.092 ms
^C
--- 127.0.0.1 ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max/stddev = 0.085/0.103/0.144/0.024 ms

> If anyone has any ideas what this might be or cause it, I would love to
> hear it!

I'm not shure what you expect, but we are talking about less than a
millisecond.
My AXPpci33 machine is not up so I can't compare.
But my other machines (NetBSD/Solaris) are in a similar range.

-- 
B.Walter              COSMO-Project         http://www.cosmo-project.de
ticso@cicely.de         Usergroup           info@cosmo-project.de


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