Date: Mon, 20 Jul 1998 16:05:13 -0700 (PDT) From: Doug White <dwhite@resnet.uoregon.edu> To: "Swanton, George" <gswanton@biw.com> Cc: "'freebsd-questions@FreeBSD.ORG'" <freebsd-questions@FreeBSD.ORG> Subject: Re: simulating WAN latency Message-ID: <Pine.BSF.4.00.9807201604110.16885-100000@resnet.uoregon.edu> In-Reply-To: <8340CF4C9BFED01188A200A0C969E9971DAA71@NT_LPD17_EXCH>
next in thread | previous in thread | raw e-mail | index | archive | help
On Fri, 17 Jul 1998, Swanton, George wrote: > Travelling as a stranger in the strange land of WindowsNT I have > encountered a problem I'm hoping my faithful friend FreeBSD can help > me solve. > > We have an application demonstrating less than impressive performance > over a wide area link. There is a configuration I belive will help but > for various reasons am unable to test without undo difficulty. I would > like to test the solution locally using a FreeBSD machine to introduce > the ~80ms latency of the 512K WAN into a local TCP link. > > I am writing to request suggestions as to how to procede. I am > considering tweaking the system to buffer packets and forward them > after a specified delay, or perhaps dropping incoming packets with > probability P. A pointer to an existing package or related document > would of course be highly desirable. Look into the ALTQ and dummynet systems that are floating about. dummynet was originally a network simulator; you may be able to configure it to introduce some delays. Poke around in the mail archives at http://www.freebsd.org/search.html for info. Doug White | University of Oregon Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant http://gladstone.uoregon.edu/~dwhite | Computer Science Major 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?Pine.BSF.4.00.9807201604110.16885-100000>