IDE corruption during heavy bt878-induced interrupt load

joe briggs (jbriggs@briggsmedia.com)
Tue, 22 Apr 2003 14:45:14 -0400


I am seeking comments or suggestions to this problem:

I create multi-channel digital surveillance systems using cards with 4 or more
multiplexed bt878 framegrabbers; each one capturing 5 or more frames per
second on each of its two input channels (total 4 * 2 * 5 = 40 fps).
Typically I run using either a Promise or Adaptec HPT370 IDE-RAID controller
with 2 WD-120GB/8MB-cache drives striped in RAID-0, with another IDE as hda
for my system drive. What happens is that every few seconds I get a "BTTV:
RISC ERROR - resetting" from the frame grabber driver. After a few days of
this I have corruption on my Reiser file system; which usually I am able to
clean up with mkreiserfs --fix-fixable or --rebuild-tree. The corruption is
both on my RAID and my system drive. Missing doing this maintenance action
can really ruin my day.

I am today replacing the IDE RAID with a 3WARE IDE-RAID that emulates SCSI on
the premise that the problem has to do with hardware bus arbitration. But as
of yet I don't have any data to support that or show improvement.

All comments/suggestions/etc. appreciated.

Joe

-- 
Joe Briggs
Briggs Media Systems
105 Burnsen Ave.
Manchester NH 01304 USA
TEL/FAX 603-232-3115 MOBILE 603-493-2386
www.briggsmedia.com
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