From owner-freebsd-hackers Thu Jul 2 08:30:49 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id IAA09832 for freebsd-hackers-outgoing; Thu, 2 Jul 1998 08:30:49 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from terra.Sarnoff.COM (terra.sarnoff.com [130.33.11.203]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id IAA09730 for ; Thu, 2 Jul 1998 08:30:28 -0700 (PDT) (envelope-from rminnich@Sarnoff.COM) Received: (from rminnich@localhost) by terra.Sarnoff.COM (8.6.12/8.6.12) id LAA01885; Thu, 2 Jul 1998 11:29:54 -0400 Date: Thu, 2 Jul 1998 11:29:54 -0400 (EDT) From: "Ron G. Minnich" X-Sender: rminnich@terra To: hackers@FreeBSD.ORG Subject: RE: timeout granularity (was: Re: Console driver...) In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, 2 Jul 1998 sbabkin@dcn.att.com wrote: > The measurements > have shown that handling 115200 bps transfer caused 11520 > interrupts per second and ate up about 20% CPU of 20 MHz 386 > in the interrupt handler. The OS was SCO Unix 3.2.1. Interesting. One the 486/25, linux 1.0.xx, the 10k interrupts also seemed to eat about 20% of the machine. ron To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message