HP-UX
- From: "Alfonso León" <aleon68@xxxxxxxxx>
- To: oracle-l <oracle-l@xxxxxxxxxxxxx>
- Date: Mon, 14 Aug 2006 14:28:08 -0500
Hi Every one:
we went online today with full load, until last week we were 20% loaded, and
CPU Utilization with less 10%. We have a HPUX with 10 cpus and a Hitachi
SAN. Oracle 9.2.0.6. CPU utilization is now 40%.
Today the performance was way more less than expected.
these are the top wait event
Top 5 Timed Events
~~~~~~~~~~~~~~~~~~ % Total
Event Waits Time (s) Ela Time
-------------------------------------------- ------------ -----------
--------
db file sequential read 1,768,294 38,259
39.69
log file sync 71,190 30,065
31.19
free buffer waits 12,212 11,351
11.78
buffer busy waits 360,596 8,773
9.10
CPU time 2,736
2.84
db file scattered read 382,133 1,691
1.75
db file parallel read 2,958 1,199
1.24
log file parallel write 5,193 1,073
1.11
enqueue 1,649 698
.72
SQL*Net message from dblink 54,991 141
.15
As you can see i'm waiting on disk, the path utilization of the san is less
than 20% and the CPU utilization is less than 40%. almost all the processes
are sleeping.
On the HP-UX monitor says that peak disk utilization is 100% the rest of the
parameters are normal and sub-used.
Does anybody know if there is parameter in kernel that limit the disk
request?
Any idea would be appreciated.
Alfonso Leon
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