Date: Wed, 30 May 2001 08:35:50 -0600 From: Peter <fbsdq@yahoo.com> To: mischief@lanesbry.com, "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: win2k Networking very slow Message-ID: <SAK.2001.05.30.ioeoktnn@support10>
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Have you tried Windows to Windows, same cards/mobo/hardware [reboot] I have tried that and it's about 6MB/sec up and down, just when I boot FreeBSD it slows down.......If you try this in Windows and it's fast I'll probably start thinking it's drivers because for me FBSD to FBSD is also slow. Please cc: me / keep me posted if you find anything out. btw, thanks for mailing all this, I'll try on my system and see what happens. On 05/29/2001 6:43:31 PM, Ralph Seberry is quoted as saying: . . . .|I wrote to Peter about his question of a slow network connection . . . .|to win95, because I have a similar problem. I think I have peter's . . . .|solution but I'm stuck. . . . .| . . . .|My position: . . . .|Box A: win2k + intel etherexpress Pro 100B NIC, speed to internet is . . . .|much better than connectivity to box B via samba/ftp. . . . .|Box B: freebsd 4.1 + netgear 100 baseTx, speed to internet fine. . . . .| . . . .|I've looked at several avenues (see below), but I'm missing something. . . . .|The connection just "pauses" frequently. (no lights on switch flicker.) . . . .| . . . .|On Tuesday, 29 May 2001 at 08:31, Peter <fbsdq@yahoo.com> wrote: . . . .|> > Did you get a response to this, I have a similar problem . . . .|> No response, thinking about buying new NIC's. . . . .| . . . .|I tried that :-( . . . .| . . . .|I've done some more research now. See, I had win98 and it would . . . .|slow down intermittently. But I had to upgrade to win2k (for work) . . . .|and it is 3 orders of magnitude too slow and hangs a lot! (not . . . .|collisions actually, from looking at the switch.) . . . .| . . . .|Someone else on freebsd-questions got advised to turn of delayed ack . . . .|(which is funny, because I think delayed ack in win2k is part of my . . . .|problem) by: . . . .|sysctl -w net.inet.ip.delayed_ack=0 . . . .| . . . .|which gave an order of magnitude performance increase. . . . .| . . . .|Someone else said collisions could be half duplex NIC, . . . .|so I checked. That's not it. In fact I might have that from . . . .|the samba list. They said if one side is 1/2 duplex, one full, . . . .|then one side gets lots of stalls, the other lots of dropped . . . .|packets, iirc. . . . .| . . . .|I found a microsoft knowledgebase article on this: . . . .|Q169789 which complains the interframe gap is smaller than . . . .|the 802.3 specification (so it's not a microsoft bug, natch) . . . .|but gives a work-around. Sounds like Peter's situtation. . . . .| . . . .|As for my problem, after turning off delayed_ack, I'm still . . . .|2 orders of magnitude slower than expected (up from 600bytes/sec . . . .|to 6k/second). But at least it doesn't hang any more. . . . .|This problem exists on ftp as well as samba. . . . .| . . . .|I turned of delayed ack in win2k (called SackOpts - special ack opts - . . . .|in microsoft knowledgebase article Q120642 and Q224829 on microsoft . . . .|tcpip tuning) and I think it made some difference, but it's subjective. . . . .| . . . .|I found knowledgebase article Q244826 on "slow msdos file copy", . . . .|which suggests changing TCPWindow, but that didn't work. The . . . .|description (of losing packets due to incompatible packing of the . . . .|TCP window) sounds plausible for my symptoms, though. . . . .| . . . .|I tried fiddling with rfc1323, ttl, recvspace and sendspace parameters . . . .|to little avail. (These were suggested in a Nov99 post to the samba . . . .|list, although there it was a setsockopts() mod to samba code.) . . . .|sysctl -w net.inet.ip.ttl=128 . . . .|sysctl -w net.inet.ip.rfc1323=0 . . . .|sysctl -w net.inet.ip.sendspace=32768 . . . .|sysctl -w net.inet.ip.recvspace=32768 . . . .| . . . .|I tweaked the same paramaters in win2k. to no avail. . . . .|suggestions from the list welcome. I'm appending ifconfig, . . . .|dmesg to entice you, but sysctl -A was 15k, so ask for . . . .|what you want out of that. . . . .| www.nul.cjb.net www.FreeBSD.org _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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