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mounting cdrom costs lot of performance

reitsema
reitsema asked
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Last Modified: 2013-12-06
When I mount a CDROM on a HP-UX system it takes about 5 minutes, during this time it seems the system hangs, nobody can continue until this mounting is done. It's a multi processor system, so you would think that only 1 CPU is busy, but the whole system "hangs", even on the console you don't get a prompt anymore during the mount proces.
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Does it do this on all cdrom discs, or just one or two? If it's only a couple, check they're not scratched or dirty. Is it a SCSI cdrom or IDE? If it's IDE, check it's not slaved off the hard drive with the /usr filesystem on. If this drive was struggling to read a cd, then the IDE bus would not be able to pass on data to or from the main filesystem on the hard drive. If it's SCSI, this should not happen.
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I have tried several machines, the problem is everywhere the same, the CD's I try to mount are official HP application CD's, there some extra software on it, mostly trial software. I also have more copies of the CDROM's because you get a set of CDROM's for every machine but all CDROM's have the same problem. I think it's a typical HP problem.
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