Date: Thu, 9 Feb 2006 07:29:21 -0500 From: <mark.jacobs@custserv.com> To: <software@schmittnet.com> Cc: questions@freebsd.org Subject: RE: showdown transfering files with scp Message-ID: <7867115D33789747BE4994F8700BB58604084688@tmpmailmb02.enterprise.corpad.timeinc.com>
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This is a home network. Cable modem to OpenBSD firewall. Firewall to router/hub. Three PC's attached to hub. The transfer was between two of the PC's. Mark Jacobs -----Original Message----- From: Bill Schmitt (SW) [mailto:software@schmittnet.com]=20 Sent: Wednesday, February 08, 2006 3:52 PM To: Jacobs, Mark - Data Center Operations <mark.jacobs@custserv.com> Cc: questions@freebsd.org Subject: Re: showdown transfering files with scp mark.jacobs@custserv.com wrote: >I was using scp to copy several large (300-800mb) each files between two >Freebsd machines. Both are on the same hub, 100MB Ethernet connection. >The source box is FreeBSD 5.4 stable at a late October build date. The >target is running 6.0 stable at a current build date. > >=20 > >The first three files showed a transfer rate of about 3mb/sec and >transfer took about a 5-7 minutes for each file. After the third one >however the transfer rate dropped to 100-200 KB/sec. There was nothing >else going on in the internal network at the time. > >=20 > >Any ideas on what happened? > >=20 > >Mark Jacobs > >_______________________________________________ >freebsd-questions@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-questions >To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > > > > =20 > I can't be sure if it's the issue, but at one point some individuals on=20 the network where I worked installed hubs of their own (the=20 non-intelligent variety of connection) and it didn't just slow them=20 down, it dragged down the entire network segment. Since hubs are not=20 intelligent, there are an awful lot of collisions and putting a hub=20 downstream from the routers means that all bets are off on performance.=20 Hope that helps.
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