Date: Wed, 27 Mar 1996 21:58:16 -0500 (EST) From: John Brann <jbrann@panix.com> To: gpalmer@FreeBSD.ORG (Gary Palmer) Cc: questions@FreeBSD.ORG, hackers@FreeBSD.ORG Subject: Re: iijppp problems - related to interrupts? Message-ID: <199603280259.VAA03591@jbrann> In-Reply-To: <1403.827887073@palmer.demon.co.uk> from Gary Palmer at "Mar 27, 96 00:37:53 am"
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Hi Gary, Thanks for the reply... Gary Palmer wrote... > John Brann wrote in message ID > <199603262340.SAA02049@jbrann.dialup.access.net>: > [... stuff deleted...] > > Is the interrupt level extraordinary? > > I should say so. From my machine, which for a while was downloading a > large file at 3.1K sec with a 115200 baud DTE rate to a 28k8 > modem. I'm using a 16550 COM port: > > gary@palmer:~> vmstat -i [vmstat details deleted] > Total 2812314 366 The thing about vmstat is that it averages over the whole of uptime. I'm suffering big spikes. > > The modem is on sio1... My IRQ rate (total) is 366/sec on average. > > > If so, what can I do - is it a hardware problem? > > Possibly. Do you have a FIFO'd COM port (a 16550) or one of the older, > non-FIFO'd ports? Nope... dmesg says: sio0 at 0x3f8-0x3ff irq 4 on isa sio0: type 16550A sio1 at 0x2f8-0x2ff irq 3 on isa sio1: type 16550A > > I don't think (however) that this problem is tracable to the > IRQ's... Have you tried updating the kernel & ppp binaries? I run a custom kernel - nothing fancy, just trimmed down to my devices. ppp is as per 2.1.0 release, but I've been having exactly the same problem since last June. > > Gary > Regards, John (An English ex-pat in New York...) -- Beavis and Butt-Head; Vladimir and Estragon for the '90s. finger jbrann@panix.com for pgp public key
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