From owner-freebsd-mobile Tue Sep 7 22:11:50 1999 Delivered-To: freebsd-mobile@freebsd.org Received: from ns.mt.sri.com (ns.mt.sri.com [206.127.79.91]) by hub.freebsd.org (Postfix) with ESMTP id D36B014D35 for ; Tue, 7 Sep 1999 22:11:44 -0700 (PDT) (envelope-from nate@mt.sri.com) Received: from mt.sri.com (rocky.mt.sri.com [206.127.76.100]) by ns.mt.sri.com (8.9.3/8.9.3) with SMTP id XAA26007; Tue, 7 Sep 1999 23:09:32 -0600 (MDT) (envelope-from nate@rocky.mt.sri.com) Received: by mt.sri.com (SMI-8.6/SMI-SVR4) id XAA24903; Tue, 7 Sep 1999 23:09:31 -0600 Date: Tue, 7 Sep 1999 23:09:31 -0600 Message-Id: <199909080509.XAA24903@mt.sri.com> From: Nate Williams MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit To: Warner Losh Cc: nate@mt.sri.com (Nate Williams), Duncan Barclay , freebsd-mobile@FreeBSD.ORG Subject: Re: Silo overflows on Libretto 50 In-Reply-To: <199909080505.XAA17535@harmony.village.org> References: <199908222248.QAA25757@mt.sri.com> <199909080505.XAA17535@harmony.village.org> X-Mailer: VM 6.34 under 19.16 "Lille" XEmacs Lucid Reply-To: nate@mt.sri.com (Nate Williams) Sender: owner-freebsd-mobile@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > : > I'm getting silo overflows on my Libretto 50CT talking to an Option PC-Card > : > modem. Can I do anything about this or do I have to live with it? > : > : You must live with it until Warner fixes the PCCARD code to use 'fast' > : interrupts. Otherwise, the other IRQ load on the system hogs the system > : too much and overflows become very common. > > Since sio is broken in current for pccard, I'm not sure I follow what > you are saying here. What I'm saying is that the previous PCCARD code did not support fast interrupts at all, and I was assuming (possibly wrongly) that the re-written PCCARD code would overcome that weakness, so that people with PCMCIA modems could run reliably run faster. The 2.* code used the 'normal' interrupt mechanism for serial interrupts, which imposes a much higher load on the system than fast interrupts which causes the system to have silo overflows. Nate To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message