Date: Tue, 6 Aug 2002 08:48:53 +0000 From: Josh Paetzel <friar_josh@webwarrior.net> To: Marcin Jurczuk <spock@tkb.pl>, <hackers@FreeBSD.ORG> Subject: Re: FreeBSD performing worse than Linux? Message-ID: <200208060848.53601.friar_josh@webwarrior.net> In-Reply-To: <20020806074146.U25158-100000@poczta.tkb.net.pl> References: <20020806074146.U25158-100000@poczta.tkb.net.pl>
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On Tuesday 06 August 2002 05:48, Marcin Jurczuk wrote: > On Wed, 28 Nov 2001, Josh Paetzel wrote: > > Well, I am seeing dismal ftp performance on my 4.x boxes. I have a > > network of 4 machines, three of which are running -STABLE from Nov > > 22. The other machine is running NetBSD 1.5.2 Release. One of the > > FreeBSD machines has a base 10 cards in it and has reasonable > > performace with ftp transfer rates around 1.1Megs/sec. The NetBSD > > machine is a sparcstation 10 with an onboard intel base 10 adapter, > > and it too sees reasonable ftp performance. The other two -STABLE > > boxes have 100tx cards in them. One is a Linksys LNE100TX, and the > > other is an intel Pro 10/100B/100+. The hub for this network is an 8 > > port SOHOware autosensing affair. Both of the 100 cards > > auto-negotiate to 100tx half-duplex. I can get appoximately > > 1.5Megs/sec out of them using ftp. I have tried swapping cables, > > swapping ports, and replacing the hub with a crossover cable and > > manually configuring the cards for either full or half duplex > > operation. None of these steps makes any difference at all. I can > > reliably duplicate my transfer speeds on a 600 meg file with a std. > > deviation of less than a half a second no matter what network > > configuration I use. My next step will be to try some different NICs, > > but I don't have anything here that is 100tx based to swap with. I > > have gotten proper transfer rates out of these machines in the past, > > but I don't remember if the network cards have changed since then. I > > rarely move large files around at all, and so only looked into this as > > a curiosity when seeing this thread. I also intend to try some NFS > > mounts out to see if this is a protocol issue or not. > > I have two 4.6 servers, and one 4.5 firewall with mostly two type cards: > Intel Pro 10/100 and Intelinet 10/100 (rtl8139C). > Two segments of network, one is on Cisco Catalyst 2900 second built on > ATI 8224 10/100 switch. On both solutions transfers are around 8-9 MB/s > betwen FBSD-> FSDB, FBSD->Linux, Linux-FBSD. > All of those cards work on 100 Mbps/Full Duplex mode.. > > I didn't notice any strange behavior on FreeBSD, only Linux show messeges > like: > eth0: card reports no resources. > eth0: card reports no resources. > but there is no slow down because of this message... > > Best regards. > > -- > Marcin Jurczuk -> spock@tkb.pl > UNIX/Network Administrator > Bialystok Cable Television > I administrate some machines on two subnets, connected via a Catalyst 1900. All of the cards on all of the machines loop up at 100tx full-duplex. There are 3 different w2k boxes, and 5 FreeBSD -STABLE boxes from two weeks ago. My ftp performance is completely bizzare. Between each FBSD machine, there is a different level of performance, and it's directional, too. Machine A to Machine B might be 10Megs/sec, while the reverse is only 6Megs/sec. then A to C will be totally different, and C to A different again, and so on and so forth. About half the connections are in a reasonable transfer rate (8-10Megs/sec) the other half range from 4Megs/sec-7Megs/sec. The cards are a grab bag of realtek 8139s, intel pros, 3com905s and so forth. swapping cards makes no difference. I've tried different switches and it makes to difference. I compared ALL of the sysctl knobs on all the machines and they were all identical (save what you would expect to be different). My network at home has an SGI box, a sparc, and 3 PCs running irix, solaris 9, and FreeBSD STABLE from today. I can do 10Megs/sec all day long from one machine to another in either direction, and yeah, the sysctl knobs are the same as the "sick" network. I intend to reinstall as many of the machines as I can this weekend to see if it makes any difference....oh yeah, one last tidbit. On the "sick" network, the Windows machines can do 10Megs/sec between each other, but only 4-6 to the FreeBSD machines. As the previous poster noted, the speeds are repeatable. If a machine does 6M/sec to another machine, it will repeat that endlessly, regardless of port, nic, switch, cable, or anything else I can think of to change. Josh To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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