Date: Mon, 07 Jul 1997 23:29:34 -0700 (PDT) From: Simon Shapiro <Shimon@i-Connect.Net> To: Josh Tiefenbach <josh@ican.net> Cc: scsi@freebsd.org Subject: RE: Prob w/DPT driver v1.1.6 Message-ID: <XFMail.970707232934.Shimon@i-Connect.Net> In-Reply-To: <19970707224647.13985@ican.net>
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Hi Josh Tiefenbach; On 08-Jul-97 you wrote: > Booting up a RELENG_2_2 box with the latest DPT driver: Does it work at all, or does it die after exactly this one message? > dpt0: BAD (0) CCB in SP (status = 1011 0000). This means that the DPT interrupted after a command completion but the results are far from perfect; The command completed has invalid address and the status is totally messed up. this normally indicates hardware problems. Can you please tell me the board model, S/N, rev level, along with the firmware (the boot prompt reports that). Also, I need the Mfg, model of the motherboard this thing goes into. How many PCI slots? Is the DPT in a ``secondary (behind a bridge)'' or primary PCI slot? I will contact DPT development with this data and try to resolve it. > from config file: > > options DPT_USE_SINTR=1 > options DPT_TRACK_CCB_USAGE > options DPT_MEASURE_PERFORMANCE > options DPT_HANDLE_TIMEOUTS If you are on 1.1.6, you must have: options DPT_SINTR_SPLHIGH as well, or the above will also happen (at least). > Error also occurs with the last 3 options turned off. Do not turn off any of the above, for a while. The savings (if you do) are on the order of 2-7 microseconds per command. The DPT serves a cache hit in 250-270us. A typical SCSI command (that goes to disk) takes 5-25ms. This on an idle system, with a single command issued. > Suggestions? See above. Keep me informed and thank you. Simon
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