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<DIV><FONT face=Tahoma size=2><SPAN
class=717321223-05122006>Hi,</SPAN></FONT></DIV>
<DIV><FONT face=Tahoma size=2><SPAN
class=717321223-05122006></SPAN></FONT> </DIV>
<DIV><FONT face=Tahoma size=2><SPAN class=717321223-05122006>We have a bad
performance issue in one of our database servers and I´ve discovered very iostat
strange numbers .</SPAN></FONT></DIV>
<DIV><FONT face=Tahoma size=2><SPAN
class=717321223-05122006></SPAN></FONT> </DIV>
<DIV><FONT face=Tahoma size=2><SPAN class=717321223-05122006>The server is
showing up normally 100.00% disk utilization but this morning I´ve shutted down
the database and the iostat was still showing 100.00 %util.</SPAN></FONT></DIV>
<DIV><FONT face=Tahoma size=2><SPAN
class=717321223-05122006></SPAN></FONT> </DIV>
<DIV><FONT face=Tahoma size=2><SPAN class=717321223-05122006>What can explain
this behaviour?</SPAN></FONT></DIV>
<DIV><FONT face=Tahoma size=2><SPAN
class=717321223-05122006></SPAN></FONT> </DIV>
<DIV><FONT face=Tahoma size=2><SPAN class=717321223-05122006>iostat -x
</SPAN></FONT></DIV>
<DIV><FONT face=Tahoma size=2><SPAN
class=717321223-05122006></SPAN></FONT> </DIV>
<DIV><FONT face=Tahoma size=2>avg-cpu: %user %nice %system
%iowait
%idle<BR>
0.00 0.00 0.00 0.00
100.00</FONT></DIV>
<DIV><FONT face=Tahoma size=2></FONT> </DIV>
<DIV><FONT face=Tahoma size=2>Device: rrqm/s
wrqm/s r/s w/s rsec/s
wsec/s rkB/s wkB/s avgrq-sz
avgqu-sz await svctm
%util<BR>sda
0.00 0.00 0.00 0.00
0.00 0.00 0.00
0.00 0.00 451876.46 0.00
0.00 100.00<BR>sdb
0.00 0.00 0.00 0.00
0.00 0.00 0.00
0.00 0.00 451876.46 0.00
0.00 100.00<BR>md1
0.00 0.00 0.00 0.00
0.00 0.00 0.00
0.00 0.00 0.00
0.00 0.00
0.00<BR>md0
0.00 0.00 0.00 0.00
0.00 0.00 0.00
0.00 0.00 0.00
0.00 0.00 0.00</FONT></DIV>
<DIV><FONT face=Tahoma size=2></FONT> </DIV>
<DIV><FONT face=Tahoma size=2>avg-cpu: %user %nice %system
%iowait
%idle<BR>
0.00 0.00 0.00 0.00
100.00</FONT></DIV>
<DIV><FONT face=Tahoma size=2></FONT> </DIV>
<DIV><FONT face=Tahoma size=2>Device: rrqm/s
wrqm/s r/s w/s rsec/s
wsec/s rkB/s wkB/s avgrq-sz
avgqu-sz await svctm
%util<BR>sda
0.00 0.00 0.00 0.00
0.00 0.00 0.00
0.00 0.00 451876.46 0.00
0.00 100.00<BR>sdb
0.00 0.00 0.00 0.00
0.00 0.00 0.00
0.00 0.00 451876.46 0.00
0.00 100.00<BR>md1
0.00 0.00 0.00 0.00
0.00 0.00 0.00
0.00 0.00 0.00
0.00 0.00
0.00<BR>md0
0.00 0.00 0.00 0.00
0.00 0.00 0.00
0.00 0.00 0.00
0.00 0.00 0.00</FONT></DIV>
<P><FONT face=Tahoma size=2>Reimer<BR></FONT></P></BODY></HTML>