Date: Mon, 19 Oct 1998 07:23:46 -0700 From: David Greenman <dg@root.com> To: "John W. DeBoskey" <jwd@unx.sas.com> Cc: freebsd-current@FreeBSD.ORG Subject: Re: Conflicting ping performance Message-ID: <199810191423.HAA03011@implode.root.com> In-Reply-To: Your message of "Mon, 19 Oct 1998 10:11:35 EDT." <199810191411.KAA21204@bb01f39.unx.sas.com>
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> We're seeing some very interesting ping timings. Wall-clock vs.
>recorded ping statistics.
>
> In the statistics below, the -current system is recording ping
>statistics 1/2 the values of the march snap. However, the march
>snap completes in 0.05 seconds, while the -current system requires
>10 seconds. A system running the 980825-SNAP gives the same strange
>results as the -current system.
>
> The network controllers should not have any effect since we are
>testing against localhost. (however, the two machines below are
>identical hardware configs using fxp0).
>
> This problem replicates when testing the actual network devices.
>
> Can anyone else replicate this problem?
>
> Comments, Critiques, or diffs to fix this are appreciated.
Caused by this:
RCS file: /home/ncvs/src/sbin/ping/ping.c,v
...
----------------------------
revision 1.41
date: 1998/08/26 18:51:37; author: des; state: Exp; lines: +1 -13
Remove -c restrictions from previous commit.
----------------------------
revision 1.40
date: 1998/08/26 01:58:39; author: dillon; state: Exp; lines: +38 -11
(well tested at BEST): -i option can now take FP values (e.g. -i 0.1),
extremely useful for networking testing. Other options secured from
user-level D.O.S. attacks. -f, -s now root-only. -i wait times < 1.0
root-only. -c count limited to 100 and defaults to 16 when ping run
by non-root user.
-DG
David Greenman
Co-founder/Principal Architect, The FreeBSD Project
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