Date: Thu, 16 Sep 2004 00:34:23 -0600 From: Gary Aitken <garya@dreamchaser.org> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: packet pass through vs ftp -- performance weirdity Message-ID: <414933EF.2050404@dreamchaser.org>
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I'm seeing some weird network performance I don't understand. If I sit at an NT box and using a web browser, go through my fbsd 4.10 firewall to someplace out in the world through a slow dsl connection, I get download speeds of 20KB - 45KB/sec, pretty much the max my DSL connection can deliver. The nt box is connected to the fbsd box over a 10Mb/sec full duplex crossover cable for test purposes. If I ftp (shell window) or use a browser to ftp from the fbsd box itself, I see a max speed of something like 8KB/sec. This makes absolutely no sense to me, given the relative speeds of the network connections, which I would have thought was the limiting factor. The fbsd box is a p200, 128M, single 7200rpm 9.4ms seagate ultra scsi drive, 10MB/sec negotiated xfr rate. Data used for testing was ~8MB file in /var partition, don't know how badly fragmented. Is passing packets through the firewall and ipfw rules that much faster than an ftp access? Ideas for where to look for what's slowing things down? Thanks, Gary
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