From owner-freebsd-questions Mon Nov 26 21:42:38 2001 Delivered-To: freebsd-questions@freebsd.org Received: from mail.radzinschi.com (cc222717-a.owml1.md.home.com [65.8.33.207]) by hub.freebsd.org (Postfix) with ESMTP id DAE9637B417 for ; Mon, 26 Nov 2001 21:42:32 -0800 (PST) Received: from localhost (marco@localhost.radzinschi.com [127.0.0.1]) by mail.radzinschi.com (8.11.6/8.11.6) with ESMTP id fAR5h6N90972 for ; Tue, 27 Nov 2001 00:43:07 -0500 (EST) (envelope-from marco@radzinschi.com) Date: Tue, 27 Nov 2001 00:43:06 -0500 (EST) From: Marco Radzinschi To: FreeBDS-Questions Subject: Low throughput on server: how to remedy? Message-ID: <20011127003256.D90942-100000@mail.radzinschi.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG 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