Date: Thu, 10 Sep 1998 01:21:48 +0100 From: Brian Somers <brian@Awfulhak.org> To: Yoav Cohen-Sivan <ycs@netvision.net.il> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: sio FIFO overflow? Message-ID: <199809100021.BAA04842@woof.lan.awfulhak.org> In-Reply-To: Your message of "Wed, 09 Sep 1998 14:56:17 %2B0300." <35F66CE1.347AAE45@netvision.net.il>
next in thread | previous in thread | raw e-mail | index | archive | help
Does this mean that PR 7755 is closable in its current incarnation ?
> I think I am seeig FIFO overflows during 115200 bps transfers on a
> serial port. Especially with heavy disk activity. Is there a way to flag
> FIFO overflows, and is there a way to check interrupt latency?
>
> I've been seeing randomly-timed link lockups during almost every PPP
> session I
> initiate (both kernel and user). The lockups clear after hanging up and
> redialling.
>
> I finally lowered my bps from 115200 to 57600, and voila! lockups have
> disappeared. I've spent the better part of the past 3 days banging on
> the link (and my phone bill) like there's no tomorrow.
>
> The lockups were usually during heavy link and system use, and I'm
> thinking
> the serial FIFO was overflowing, but the sio driver latency was too
> great to respond in time.
>
> Could this have caused some corrupted packets to be sent to my ISP
> (using Cisco 5200 equipment), causing it to ignore me for the duration
> of the session?
>
> Yoav
--
Brian <brian@Awfulhak.org>, <brian@FreeBSD.org>, <brian@OpenBSD.org>
<http://www.Awfulhak.org>;
Don't _EVER_ lose your sense of humour....
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199809100021.BAA04842>