Date: Tue, 27 Nov 2001 00:43:06 -0500 (EST) From: Marco Radzinschi <marco@radzinschi.com> To: FreeBDS-Questions <freebsd-questions@freebsd.org> Subject: Low throughput on server: how to remedy? Message-ID: <20011127003256.D90942-100000@mail.radzinschi.com>
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Hello: I have a server running FreeBSD 4.4 release, hooked up to a network via a 100 MBit switch. When I retrieve files via FTP over this link, the files are coming in at 38 MBit/sec maximum. Now, the 38 MBit/sec figure is when there is barely any traffic going through the wire other than between the server and ONE client. I am wondering why the throughput is not even half what the switch can handle. The switch and NIC's are set to 100 MBit full duplex, so I know that the server simply cannot pump out any more data. I don't think the server is underpowered, but here are the specs: Intel Celeron 400 MHz 256 MB RAM 40 GB 7200 RPM IDE Quantum HDD (ATA-33) 3Com 3c905 NIC I checked the top output during a download, and I see maybe 5% CPU usage going towards user processes, and 90% for interrupts. Could it be that maybe the NIC is causing such high rate of interrupts? Marco Radzinschi E-Mail: marco@radzinschi.com AOL IM: CrackedBoy Running FreeBSD 4.4-RELEASE i386 12:32AM up 15 days, 9:01, 1 user, load averages: 1.02, 1.02, 0.99 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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