timer problem?

[Hiroki Sato]

Hi,

 I have some experiences of "hiccup" probably due to the
 timer during my package building.  The primary symptom is
 that the following message appears and some of the TCP sessions
 which were opened at that time lock forever:

  |ad6: WRITE command timeout tag=0 serv=0 - resetting
  |ata3: resetting devices .. done

 These TCP sessions seem to remain over 24 hours with no
 packet.  It does not always happen but does not recover once
 it stopped working without manually disconnecting by killing
 the process (typically fetch(1)) that holds it.  Note that
 no system panic occurs and the system works fine before/after it.

 I am not sure what causes these symptoms but what can I do to
 investigate them?  Please let me know it if there is a knob for
 debugging or so on.  Thanks.

-- 
| Hiroki SATO
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