SMON process consume High CPU in production setup.

Hi,
Recently we migrate our storage from IBM DS4700 to IBM v7000. on last Saturday from yesterday and today cpu almost 100 percent in peak hours.
Right now our datafiles in SSD and archivelogs in SAS disk.
Please suggest
regards,
Karthi.

Hi Karthi,
Which SMON process is consuming CPU ,I mean,Database SMON /ASM SMON if is in use.
+ Install and enable OSwatcher with atleast 30 seconds interval and monitor which process /what is causing high CPU.
+ If they are oracle processes ,then validate what are they doing at database level .
Does it comes from any application code ,if so validate those sqls.
+ Install procwatcher to understand what are they doing .
Refer::-----------
==============
Procwatcher: Script to Monitor and Examine Oracle DB and Clusterware Processes (Doc ID 459694.1)
+ Then as per your environment get pstack/procstack of that process in 30 seconds interval for 3-4 times .
If try to identify the issue ,if required please open service request with us.
Regards,
Aritra

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Hi jackhill,
Please check whether you configure Search service in your SharePoint.
And please use Taskmgr on the server to check which process may be cause this issue.
In addition, there is an article about high CPU in SharePoint 2013, please check if it is useful for you:
https://speverything.wordpress.com/2013/03/12/sharepoint-2013-high-cpu-and-memory-utilization-killing-my-server/
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Hi,
DBWR is consuming high CPU. After enabling DirectIO on Solaris SPARC 10, dbwr is eating away almost 1 CPU on a v440 machine i.e. 19% throughout the day. Neither of "buffer busy waits" or "write complete waits" or "free buffer waits" are in the top 5 wait events, which, to me, means that there is no buffer contention.
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Thanks

user12022918 wrote:
DBWR is consuming high CPU. After enabling DirectIO on Solaris SPARC 10, dbwr is eating away almost 1 CPU on a v440 machine i.e. 19% throughout the day. 19% is less than 1/5th of a CPU. Or are you referring to a 100% being all 4 CPUs?
What I understand is that after enabling DirectIO, it takes longer for the IO to complete because pre-DirectIO it would return from the file system cache whereas now it has to return from the disk Incorrect. See directio for details.
Yes, removing the file system cache from the I/O layer for a device can reduce I/O performance if the caller does not perform its own caching. However, direct I/O will eliminate the system cache overheads (and associated CPU resources needed) from a caller (like Oracle) that implements its own sophisticated buffer cache.
Direct I/O should therefore increase Oracle I/O performance and decrease resource footprint as it eliminates the need for the kernel to maintain a cache for that device.
Infact after enabling DirectIO, IO has become very slow which is another problem and as a result log file writes have also become slow which is a 3rd problem. Direct I/O, as per the Sun docs, is an advisory call. It may not place that device in direct I/O modes. It may result in partial direct I/O. So you need to make sure exactly what happens and how successful (partial or complete) this setting was.
btw, I am aware that if there were many FTS, then DirectIO can make the system slow but there are no FTS in my case. FTS (multi block reads/large sequential reads) is slower? This is contrary to Sun's docs that state:
Large sequential I/O generally performs best with DIRECTIO_ON, except when a file is sparse or is being extended and is opened with O_SYNC or O_DSYNC.

DBWR is consuming high CPU

Hi,
I'm experiencing bug in Oracle version 10.2.0.3:
7385253 – DBWR IS CONSUMING HIGH CPU
The explanation of the bug on metalink says its from version 10.2.0.4 and there is a patch.
My question is, if this bug was also present in 10.2.0.3 and can the patch be applied to this version of Oracle DB.
Cheers.

Hi,
AFAIK, it won't support, since patch on 10.2.0.3 would required additional files which not available onthat current version, so its fix on the top of 10.2.0.4. I am not sure whether it will work or not.
- Pavan Kumar N
- ORACLE OCP - 9i/10g
https://www.oracleinternals.blogspot.com

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David Losada
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Ora 10gR2 on Solaris9 : smon consuming high cpu

Hi,
I noticed that the smon process is consuming abnormal amounts of CPU.
At startup, every time, it uses +/- 13 seconds of cpu. Afterwards, at regular times , it starts again consuming cpu.
After running 3 days, it consumed +/- 400 secs, while it is only a small development database, hardly used !
I ran the query :
select count(*) from DBA_FREE_SPACE;
----> this number is steady (+/- 70)
select tablespace_name, segment_name, segment_type, sum(bytes),
count(extent_id)
from dba_extents
where segment_type = 'TEMPORARY';
----> no rows
So what is smon doing then ???? How can I find out how to correct ?
Thanks
Linde Ackermans
Edited by: user602338 on 04-Dec-2008 05:53

Hi,
I noticed that the smon process is consuming abnormal amounts of CPU.
At startup, every time, it uses +/- 13 seconds of cpu. Afterwards, at regular times , it starts again consuming cpu.
After running 3 days, it consumed +/- 400 secs, while it is only a small development database, hardly used !
I ran the query :
select count(*) from DBA_FREE_SPACE;
----> this number is steady (+/- 70)
select tablespace_name, segment_name, segment_type, sum(bytes),
count(extent_id)
from dba_extents
where segment_type = 'TEMPORARY';
----> no rows
So what is smon doing then ???? How can I find out how to correct ?
Thanks
Linde Ackermans
Edited by: user602338 on 04-Dec-2008 05:53

Process svchost consuming high cpu 99 %

Hi,
We have installed iis 6 in windows server 2003 and the process 832 svchost consuming the high cpu and causing the slow response of the applications, hence please advise the possible work around for the same
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All Operations
Tip:
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rpcrt4!RPC_INTERFACE::DispatchToStub
rpcrt4!LRPC_SCALL::DealWithRequestMessage
rpcrt4!LRPC_ADDRESS::DealWithLRPCRequest
ntdll!RtlpWaitThread
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rpcrt4!LOADABLE_TRANSPORT::ProcessIOEvents
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vssapi!CVssWriterImpl::RequestWriterInfo
ole32!ThreadInvoke
rpcrt4!RPC_INTERFACE::DispatchToStubWithObject
ncobjapi!CNamedPipeClient::ProviderReadyThreadProc
msvcrt!_endthreadex
aelupsvc!AelTppWorkerThreadRoutine
ntdll!NtReadFile
kernel32!ReadFile
advapi32!ScGetPipeInput
advapi32!ScDispatcherLoop
advapi32!StartServiceCtrlDispatcherW
svchost!_wmainCRTStartup
kernel32!BaseProcessStart
ntdll!RtlpTimerThread
wzcsvc!ServiceStart
shsvcs!CGenericServiceManager::_ServiceMain
schedsvc!CSchedWorker::MainServiceLoop
schedsvc!SchedMain
schedsvc!SchedStart
schedsvc!SchedServiceMain
schedsvc!WindowMsgFcn
schedsvc!PfSvcMainThread
schedsvc!PfSvProcessTraceThread
13 hits
8 hits
8 hits
7 hits
3 hits
3 hits
3 hits
3 hits
3 hits
3 hits
3 hits
2 hits
2 hits
2 hits
2 hits
2 hits
2 hits
2 hits
2 hits
2 hits
2 hits
2 hits
2 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits

Hi,
We have installed iis 6 in windows server 2003 and the process 832 svchost consuming the high cpu and causing the slow response of the applications, hence please advise the possible work around for the same
please find below the dump analysis
All Operations
Tip:
To search on any particular function in the list below, highlight it with the mouse then press CTRL+C, CTRL+F, CTRL+V. This will highlight all the call stacks which contain the particular function and allow you to jump between them in
the browser.
Top 40 functions in all operations (excludes boiler-plate functions)
ntdll!NtReplyWaitReceivePortEx
svchost!ServiceStarter
advapi32!ScSvcctrlThreadA
ntdll!ZwRemoveIoCompletion
ntdll!ZwDelayExecution
rpcrt4!Invoke
rpcrt4!DispatchToStubInCNoAvrf
rpcrt4!RPC_INTERFACE::DispatchToStubWorker
rpcrt4!RPC_INTERFACE::DispatchToStub
rpcrt4!LRPC_SCALL::DealWithRequestMessage
rpcrt4!LRPC_ADDRESS::DealWithLRPCRequest
ntdll!RtlpWaitThread
authz!AuthzpDeQueueThreadWorker
rpcrt4!COMMON_ProcessCalls
rpcrt4!LOADABLE_TRANSPORT::ProcessIOEvents
rpcrt4!ProcessIOEventsWrapper
browser!BrWorkerThread
vssapi!CVssWriterImpl::RequestWriterInfo
ole32!ThreadInvoke
rpcrt4!RPC_INTERFACE::DispatchToStubWithObject
ncobjapi!CNamedPipeClient::ProviderReadyThreadProc
msvcrt!_endthreadex
aelupsvc!AelTppWorkerThreadRoutine
ntdll!NtReadFile
kernel32!ReadFile
advapi32!ScGetPipeInput
advapi32!ScDispatcherLoop
advapi32!StartServiceCtrlDispatcherW
svchost!_wmainCRTStartup
kernel32!BaseProcessStart
ntdll!RtlpTimerThread
wzcsvc!ServiceStart
shsvcs!CGenericServiceManager::_ServiceMain
schedsvc!CSchedWorker::MainServiceLoop
schedsvc!SchedMain
schedsvc!SchedStart
schedsvc!SchedServiceMain
schedsvc!WindowMsgFcn
schedsvc!PfSvcMainThread
schedsvc!PfSvProcessTraceThread
13 hits
8 hits
8 hits
7 hits
3 hits
3 hits
3 hits
3 hits
3 hits
3 hits
3 hits
2 hits
2 hits
2 hits
2 hits
2 hits
2 hits
2 hits
2 hits
2 hits
2 hits
2 hits
2 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits
1 hits

FNDOPP process consumes 200% CPU even though request count is less

Hi Guys,
We have problem with FNDOPP services in R12.1.3 with database version 11.2.0.3
Its a multinode environment with RAC database and shared Appl_top with PCP.
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Please see the following docs.
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Hi,
we have one isuue with one of our production database.
database version 10.2.0.4
OS Version AIX 5.3
DB SIZE=450Gb
when i check in database one delete Query is running in database is as follows and smon process of that perticular database consuming about 49%CPU.
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Thanks.

SMON and unaccessible SMON_SCN_TIME table
Please check the mentioned MOS doc in first place.

RMAN backup consuming high CPU

DB:10.2.0.2
OS:Solaris 5.8
High i have a production dababase of 35 GB and we have scripts scheduled to take the archivelogs backup 7 times a day and full database backup on all thurs day.We are getting some high CPU when this RMAN runs. Nearly taking 20% of CPU for 1 rman process. Some times we are also getting 4 rman process running and consuming 80% of total cpu.
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Backup Script:
report obsolete;
delete noprompt obsolete;
run {
backup database;
sql 'ALTER SYSTEM ARCHIVE LOG CURRENT';
Archive backup script:
run {
backup archivelog all not backed up 1 times;
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 60 DAYS;
CONFIGURE BACKUP OPTIMIZATION OFF; # default
CONFIGURE DEFAULT DEVICE TYPE TO 'SBT_TAPE';
CONFIGURE CONTROLFILE AUTOBACKUP ON;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE SBT_TAPE TO '%F'; # default
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
CONFIGURE DEVICE TYPE 'SBT_TAPE' PARALLELISM 2;
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CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE SBT_TAPE TO 1; # default
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE SBT_TAPE TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE MAXSETSIZE TO UNLIMITED; # default
CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
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when RMAN starts the job, at the time of point to allocate channels, to allocate processes it will take high CPU consume, later it will back to normal CPU consumption according to script
set a transition rate for your channels
ALLOCATE CHANNEL backup_disk1 DEVICE TYPE disk
FORMAT '/u01/BKP/%U'
MAXPIECESIZE 2000 M
RATE 1M;
Edited by: CKPT on Aug 23, 2010 3:09 PM

Airport Process utilizing high CPU utilization

I currently have a 13 inch MacBook Pro i7 (2012 version). Recently I upgraded to Mavericks. After using the computer for a day after the upgrade, I began to notice it becoming very hot and the fans running very high. Looking at the running processes i noticed that a process called "airport" was running and utilizing high CPU times causing the heating up and fans running. Once I stopped this process, the laptop went back to operating at normal levels.
Unfortunately this issue began to come back several times....the "airport" process starting at any time and utilizing high CPU utilization....again only by killing this process fixed this issue.
After seeing this behavior over several days, I decised to wipe the drive and install a clean copy of Mavericks in the computer. Thought here was that possibly something did not carry over correctly from the upgrade from Mountain Lion to Mavericks. Unfortunely this did not correct the issue with the "airport" process as it still is continiung to launch at any time and spike the processor until I manually kill the process.
I do not recall this issue occuring while running Mountain Lion so it seems to be specific to Mavericks at this point.
I was hoping to hear if any other have experienced this type of issues while running Mavericks.

You should be able to find the information you are looking for from the default Total CPU Utilization Percentage monitor. This monitor has a built in diagnostic task that will kick off when an alert is triggered to list the top cpu consuming processes.
To find which processes were causing CPU to spike, simply review the State Change Events history in health explorer for the machine that was affected, for the Total CPU Utilization Percentage monitor. I have modified my second screen shot
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Query to find out which process consuming more cpu?

Hi All,
some one please tell me the query to find out which process is consuming more
cpu resources?
Thanks and Regards
Srikanth

Use V$SESSTAT to determine which sessions are using most CPU, and investigate what SQL these users/sessions are executing:
SQL> select ss.sid, se.command, ss.value CPU, se.username, se.program
from v$sesstat ss, v$session se
where ss.statistic# in
(select statistic#
from v$statname
where name = 'CPU used by this session')
and se.sid=ss.sid
order by ss.value desc;

SMON process consume High CPU in production setup.

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