Date: Wed, 10 Feb 1999 16:34:15 +0100 From: etxgnon@etxb.ericsson.se (Gunnar Olsson) To: luigi@labinfo.iet.unipi.it Cc: hackers@FreeBSD.ORG Subject: Re: real time measurements Message-ID: <199902101534.QAA06615@avc354.etxb.ericsson.se>
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> From majordom@FreeBSD.ORG Wed Feb 10 16:20 MET 1999 > Delivered-To: vmailer-hackers@freebsd.org > From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> > Subject: Re: real time measurements > To: etxgnon@etxb.ericsson.se (Gunnar Olsson) > Date: Wed, 10 Feb 1999 14:04:17 +0100 (MET) > Cc: hackers@FreeBSD.ORG, etxgnon@etxb.ericsson.se > X-Loop: FreeBSD.ORG > > > I'm doing real time measurements through a PC, > > which I use as a router. Sometimes a packet is delayed > > through the system, even though the load is low. > > I have tried to disable all not necessary processes, > > but still I can see this delay. > > > > Does anyone know if something is going around in the > > system? Some parameter I can set? > > Please let me know! > > how much delay, and how can you tell that -- it could be delayed by > ethernet collisions or anything. > > luigi > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message > Hi, no collision problems. One incoming port and one outgoing port and no congestion. I have now time stamp the packets trough the system and find an increase from normal 5 microsecunds to 200 microsecund between the functions ip_input and ip_output sometimes. Any ideas? Regards, Gunnar To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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