From owner-freebsd-isp Mon Feb 25 2:50:44 2002 Delivered-To: freebsd-isp@freebsd.org Received: from ady.warpnet.ro (ady.warpnet.ro [217.156.25.2]) by hub.freebsd.org (Postfix) with ESMTP id 2CD8037B417; Mon, 25 Feb 2002 02:50:37 -0800 (PST) Received: from localhost (ady@localhost) by ady.warpnet.ro (8.9.3/8.9.3) with ESMTP id MAA43817; Mon, 25 Feb 2002 12:49:59 +0200 (EET) (envelope-from ady@warpnet.ro) Date: Mon, 25 Feb 2002 12:49:59 +0200 (EET) From: Adrian Penisoara To: "Forrest W. Christian" Cc: freebsd-isp@FreeBSD.ORG, freebsd-network@FreeBSD.ORG Subject: Re: Lucent Avaya Comm 11Mbps wireless eating all CPU In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Hi, On Sun, 24 Feb 2002, Forrest W. Christian wrote: > On Sun, 24 Feb 2002, Adrian Penisoara wrote: > > I have a PCMCIA Lucent Avaya Communication Silver 11Mbps wireless card > > (hosted on a PCI PC Card bus) installed on a gateway with a Pentium > > 233Mhz MMX CPU and this card eats all CPU at about 3Mbps (with >90% of > > the time spent in interrupts). > > This isn't normal... Are you sure that it is what is eating the > processor? What does top show you... Yes, in top Interrupts can jump from 10-13% to 97% when I go at near 3Mbps traffic. > > > My hypothesis is that the CPU is hogged by the WEP encryption > > calculations done by the driver in the interrupt handler or it might be > > something wrong with the driver. > > WEP is on the card not in the driver. There is no performance impact to > speak of in enabling WEP. Well, this looks normal to me. > > > Has anyone seen this issue ? Is it normal ? Could a better CPU (e.g. > > 700Mh Duron) handle the whole 11Mbps bandwidth ? > > Something is amiss. I can get 4-5Mb/s through a ISA carrier without even > thinking. That is on a 486/66, and the load is basically nothing... > Someone suggested thet it might be a PC BIOS shared IRC. What can I do about that ? Thanks, Ady (@warpnet.ro) _______________________________________________________________________ | Programming in BASIC causes brain damage. | | (Edsger Wybe Dijkstra) | To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message