Seeing init in S mode in 'top' like that:
1 root 16 0 1972 556 480 S 0.0 0.0 0:00.53 init
is not so extraordinary if you just invoke 'top'. If it is in R or other
process mode continuously, that would be alarming.
Another symptom that comes along with this weird non-0.00 load issue is that
user I/O seems to "glitch" every now and then. Almost like the hard drives
are spinning up after being put to sleep... however, APM is disabled in my
kernel since I am running in SMP mode.
I think that #might# be the key symptom. How exactly do you mean the
'glitch'. Does I/O pause for an interval to the point where you notice
it for several seconds and then continues, abort completely (I/O
errors)? It could be that there is somekind of background reconstruction
or syncing happenning due to driver or hardware issues.
dmesg | grep -i md
should give you any hickups related to the RAID config. Doing also a
'vmstat 3'
whilst you see the 'glitchy' I/O you mention might be useful. Look for a
high number of interrupts or elevated r and b columns.
/proc/interrupts, the output of 'lsmod' and your SoftRAID configs files
would help, as well as your kernel version.
GM
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