[ale] md2_raid1

[drifter at oppositelock.org (drifter)]

My box suddenly slowed down, so I checked with TOP and a program called 
md2_raid1 is sucking 20% of the cpu cycles -- and making it difficult to even 
type this email. :(  This box is running FC11

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Next stop was the log file and this is at the end of /var/log/messages:

Dec 13 11:21:08 Sarge kernel: imklog 3.22.1, log source = /proc/kmsg 
started.
Dec 13 11:21:08 Sarge rsyslogd: [origin software="rsyslogd" 
swVersion="3.22.1" x-pid="1362" x-info="http://www.rsyslog.com";] (re)start

Dec 13 11:41:02 Sarge kernel: md: data-check of RAID array md2

Dec 13 11:41:02 Sarge kernel: md: minimum _guaranteed_  speed: 1000 
KB/sec/disk.

Dec 13 11:41:02 Sarge kernel: md: using maximum available idle IO bandwidth 
(but not more than 200000 KB/sec) for data-check.

Dec 13 11:41:02 Sarge kernel: md: using 128k window, over a total of 
202001152 blocks.

Dec 13 11:41:02 Sarge kernel: md: delaying data-check of md0 until md2 has 
finished (they share one or more physical units)

Dec 13 11:41:02 Sarge kernel: md: delaying data-check of md1 until md2 has 
finished (they share one or more physical units)

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Does the OS suspect a problem with one of both of the hard drives?

Turned the box off last night so the uptime is less than 2 hours.

Another program, npviewer, also has been stealing cycles and I killed that 
first, hoping that the box would return to normal.  Didn't help much.  
Checking in the log I see this line:

Dec 13 10:41:42 Sarge kernel: npviewer.bin[2584]: segfault at ff99cd48 ip 
ff99cd48 sp bfb6773c error 14

and I have no idea what it is trying to tell me.  Note that this was about 
an hour before the box started checking the raid array.

Hints would be appreciated.

Sean