Date: Mon, 23 Jun 1997 12:00:26 -0700 (PDT) From: Simon Shapiro <Shimon@i-Connect.Net> To: FreeBSd-Hackers@FreeBSD.ORG Subject: I/O Errors with PPP Message-ID: <XFMail.970623120026.Shimon@i-Connect.Net>
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Hi Y'all, This is a continuation of a problem we encounter when running the new DPT SCSI driver on a Pentium Pro machine. To make long stories short, here is what we did: * Setup kernel PPP session to our favorite ISP. We tried, V34, 64K ISDN and 128Kb ISDN. Same result. * Start make release, make world, or dump. Result: Either the system FREEZES solid or all access to a given disk devie blockes indefinitely. The second case seems more common. To verify, we had another scenario: * Do NOT start PPP * Start X11 (XF8633), open an xterm, login to another system and run an endless loop of ``ls -alR''. * Start a compile, dump to tape (sure crasher) or even large dump on two tape drives at the same time. Result: Perfect behavior and completion. The above are with or WITHOUT software interrupts enabled in the driver. Actually, these results are reproducable wit hthe software interrupts #ifdef`ed out of the driver. Load does not seem to matter, as long as there is some. We managed to get crashes overnight when cvsup was running from a cron entry, or receiving email. Any suggestions will be appreciated. Simon P.S. We do see an occsional sio buffer overflow when running ISDN.home | help
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