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cpu_consumed_verses_cpuwait.sql
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cpu_consumed_verses_cpuwait.sql
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/*
see
http://kylehailey.com/oracle-cpu-time/
output looks like
SQL> /
CPU_TOTAL CPU_OS CPU_ORA CPU_ORA_WAIT COMMIT READIO WAIT
---------- ---------- ---------- ------------ ---------- ---------- ----------
14.887 .387 13.753 .747 0 0 .023
SQL> /
CPU_TOTAL CPU_OS CPU_ORA CPU_ORA_WAIT COMMIT READIO WAIT
---------- ---------- ---------- ------------ ---------- ---------- ----------
21.989 7.469 12.909 1.611 0 0 .044
SQL> /
CPU_TOTAL CPU_OS CPU_ORA CPU_ORA_WAIT COMMIT READIO WAIT
---------- ---------- ---------- ------------ ---------- ---------- ----------
26.595 12.125 11.841 2.629 0 0 .025
SQL> /
CPU_TOTAL CPU_OS CPU_ORA CPU_ORA_WAIT COMMIT READIO WAIT
---------- ---------- ---------- ------------ ---------- ---------- ----------
27.045 12.125 11.841 3.079 0 0 .025
*/
with AASSTAT as (
select
decode(n.wait_class,'User I/O','User I/O',
'Commit','Commit',
'Wait') CLASS,
sum(round(m.time_waited/m.INTSIZE_CSEC,3)) AAS,
BEGIN_TIME ,
END_TIME
from v$waitclassmetric m,
v$system_wait_class n
where m.wait_class_id=n.wait_class_id
and n.wait_class != 'Idle'
group by decode(n.wait_class,'User I/O','User I/O', 'Commit','Commit', 'Wait'), BEGIN_TIME, END_TIME
union
select 'CPU_ORA_CONSUMED' CLASS,
round(value/100,3) AAS,
BEGIN_TIME ,
END_TIME
from v$sysmetric
where metric_name='CPU Usage Per Sec'
and group_id=2
union
select 'CPU_OS' CLASS ,
round((prcnt.busy*parameter.cpu_count)/100,3) AAS,
BEGIN_TIME ,
END_TIME
from
( select value busy, BEGIN_TIME,END_TIME from v$sysmetric where metric_name='Host CPU Utilization (%)' and group_id=2 ) prcnt,
( select value cpu_count from v$parameter where name='cpu_count' ) parameter
union
select
'CPU_ORA_DEMAND' CLASS,
nvl(round( sum(decode(session_state,'ON CPU',1,0))/60,2),0) AAS,
cast(min(SAMPLE_TIME) as date) BEGIN_TIME ,
cast(max(SAMPLE_TIME) as date) END_TIME
from v$active_session_history ash
where SAMPLE_TIME >= (select BEGIN_TIME from v$sysmetric where metric_name='CPU Usage Per Sec' and group_id=2 )
and SAMPLE_TIME < (select END_TIME from v$sysmetric where metric_name='CPU Usage Per Sec' and group_id=2 )
)
select
to_char(BEGIN_TIME,'HH:MI:SS') BEGIN_TIME,
to_char(END_TIME,'HH:MI:SS') END_TIME,
( decode(sign(CPU_OS-CPU_ORA_CONSUMED), -1, 0, (CPU_OS - CPU_ORA_CONSUMED )) +
CPU_ORA_CONSUMED +
decode(sign(CPU_ORA_DEMAND-CPU_ORA_CONSUMED), -1, 0, (CPU_ORA_DEMAND - CPU_ORA_CONSUMED ))) CPU_TOTAL,
decode(sign(CPU_OS-CPU_ORA_CONSUMED), -1, 0, (CPU_OS - CPU_ORA_CONSUMED )) CPU_OS,
CPU_ORA_CONSUMED CPU_ORA,
decode(sign(CPU_ORA_DEMAND-CPU_ORA_CONSUMED), -1, 0, (CPU_ORA_DEMAND - CPU_ORA_CONSUMED )) CPU_ORA_WAIT,
COMMIT,
READIO,
WAIT
from (
select
min(BEGIN_TIME) BEGIN_TIME,
max(END_TIME) END_TIME,
sum(decode(CLASS,'CPU_ORA_CONSUMED',AAS,0)) CPU_ORA_CONSUMED,
sum(decode(CLASS,'CPU_ORA_DEMAND' ,AAS,0)) CPU_ORA_DEMAND,
sum(decode(CLASS,'CPU_OS' ,AAS,0)) CPU_OS,
sum(decode(CLASS,'Commit' ,AAS,0)) COMMIT,
sum(decode(CLASS,'User I/O' ,AAS,0)) READIO,
sum(decode(CLASS,'Wait' ,AAS,0)) WAIT
from AASSTAT)
/