Vanhorn, Mike wrote:
I have two HP dc7800 convertible minitowers that are exhibiting the following issue: every 5-10 minutes, they will "freeze" for about 30 seconds, and then pick right back up again. During the freeze, it seems that nothing at all happens on the system; the clock doesn't even advance (it just picks up again with the next second, and that 30-or-so seconds are lost).
I've tried both CentOS 5.8 and 5.7, thinking it was a kernel incompatibility, but the problem happened with both versions. I have tried different hard drives, different memory, even swapped the entire machine, and the problem exists everywhere. I have tried adding "pci=nommconf" to the kernel line, as that was reported as being necessary back with 5.2 on these machines, but that made no difference (and shouldn't be necessary now, anyway, as I believe the issue has either been fixed or worked-around).
<snip> When you say "swapped the entire machine", what did you do? Also, what's running on them? Have you tried running top -d 10 or smaller (that will update the screen every 10 secs; I only recently found that current top allows tenths of a second.
If you don't see anything, I'd suggest you call HP, assuming they're still under warranty.
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