Date: Thu, 29 Jun 2000 02:23:35 -0400 From: Jim Conner <jconner@enterit.com> To: Peter.McGarvey@telinco.net Cc: freebsd-questions@FreeBSD.ORG Subject: Re: ARGH! :) Ongoing bandwidth throttling issue...need help! Message-ID: <4.3.2.7.2.20000629022049.02696478@mail.enterit.com> In-Reply-To: <395AE79B.7C81631A@telinco.net> References: <4.3.2.7.2.20000628023139.026784a0@mail.enterit.com>
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At 07:07 AM 6/29/2000 +0100, you wrote: >Jim Conner wrote: > > > > Is there anything or any reason anyone can think of that would keep my > > machine from using its full capacity bandwidth? Its a 3.4REL machine using > > a 10/100 BT NIC plugged into a 10/100 switch and it transfers almost like > > its on a 1 BT connection =P It is absolutely driving me crazy! Im using > > the Via Rhine driver (DLink card) and no NATD or ipfw. Here is what > > systeat -tcp gives me: > >I've had speed problems with NICs in the past. > >For a start I turned off Full-Duplex. Yes, I know it's *should* give me >twice the throughtput - but I discovered it's actually a good way to >slow your whole network down. It's only usefull for the occasional >client system and defiantely not on a server. Ok...noted :) Thanks... >I also discovered that the the other thing which slows traffic is >MS-Windows. The MS TCP stack is a pile of c**p. So in and >Unix<->Windoms connection my unix systems tend to have to wait for tcp >acknowlegements. This is actually something I already knew. Winjunk...gotta not love it =P oops...sorry, didn't mean to trash another OS... >I'm not kidding here, the Windows lag is noticable. A while back I >managed to download a whole FreeBSD ISO image off the internet onto my >FreeBSD machine in just under 7 minutes. Whereas it took almost 20 >minutes to copy this off my FreeBSD box onto my Windows machine - and >both machines had a 100Mbps connection to the same switch. Not good. hmm...thats odd! but somewhat believable.... >BTW, you do realise that the top of the screen is the system load >average not the network throughput. I only mention the fact because I >once had a work mate who got confused and freaked. He would not believe >otherwise until I showed him the lottle flashing lighes throughput on >the hub. Nope...didn't know that about the status bar on systat...good to know. Thanks. >As for monitoring bandwidth, I don't really think systat really cuts >it. Get hold of MRTG and put it on another machine. Set it to monitor >the port on your ftp server, and you'll get a nice little graph of the >throughput. Already have it, but haven't implemented snmpd on the server so no pretty graphs as of yet for the server =P but got all sorts of pretty stuff on the router! ;) - Jim >-- >TTFN, FNORD > >Peter McGarvey, Unix Administrator >Network Operations Center, Telinco Limited - Jim ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Today's errors, in contrast: Windows - "Invalid page fault in module kernel32.dll at 0032:A16F2935" UNIX - "segmentation fault - core dumped" Humanous Beingsus - "OOPS, I've fallen and I can't get up" ------------------------------- Jim Conner NOTJames jconner@enterit.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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