Date: Thu, 25 Nov 1999 23:41:25 +0100 From: "Niels Chr. Bank-Pedersen" <ncbp@bank-pedersen.dk> To: freebsd-questions@FreeBSD.ORG, Greg Lehey <grog@lemis.com> Subject: Re: ping response times over ppp Message-ID: <19991125234125.A23366@bank-pedersen.dk> In-Reply-To: <19991125173107.16398@mojave.sitaranetworks.com>; from grog@mojave.sitaranetworks.com on Thu, Nov 25, 1999 at 05:31:07PM -0500 References: <19991125230609.A23253@bank-pedersen.dk> <19991125173107.16398@mojave.sitaranetworks.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thu, Nov 25, 1999 at 05:31:07PM -0500, Greg Lehey wrote: > On Thursday, 25 November 1999 at 23:06:09 +0100, Niels Chr. Bank-Pedersen wrote: > > Hi, > > > > We are doing some testing of some new network equipment, and I've > > stumbled across the following: > > > > 64 bytes from 192.168.10.10: icmp_seq=22 ttl=253 time=210.361 ms > > 64 bytes from 192.168.10.10: icmp_seq=23 ttl=253 time=210.392 ms > > > > All responsetimes equals n*10 + epsilon [ms]. I'm pretty sure we don't have > > any queuing involved that could influence the results, so my question is > > whether this is caused by timeresolution problems within either ping or > > ppp; or I'm just plain lucky to hit n*10 every time? :) > > Sounds like it could be the other end. What's there? I seem to > remember that System V STREAMS can sometimes do things like this. It's a FreeBSD-STABLE as well: FreeBSD freeze.wheel.dk 3.3-STABLE FreeBSD 3.3-STABLE #6: Fri Nov 19 22:03:19 CET 1999 root@freeze.wheel.dk:/usr/src/sys/compile/FREEZE i386 - and it's just a few ethernets away - plus of course the ppp-link (see below). > BTW, for normal ping packets and 33.6 or 56 kb/s, these are *very* > slow times. Actually its ISDN, just not the B-channel :-) > Greg /Niels Chr. -- Niels Christian Bank-Pedersen, NCB1-RIPE. Network Manager, Tele Danmark NET, IP-section. "Hey, are any of you guys out there actually *using* RFC 2549?" To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?19991125234125.A23366>