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Full Discussion: CPU performance
Operating Systems AIX CPU performance Post 302989592 by powerAIX on Monday 16th of January 2017 04:26:16 AM
Old 01-16-2017
The db server is of 16 cores that was a typo mistake. Its has only one db instance running which finabrodb and nothing else is running on this system. The other Db psentry was also my mistake from UAT system sorry for that.

Code:
root@ABRO-DB/#lsattr -El mem0
ent_mem_cap           I/O memory entitlement in Kbytes           False
goodsize       204800 Amount of usable physical memory in Mbytes False
mem_exp_factor        Memory expansion factor                    False
size           204800 Total amount of physical memory in Mbytes  False
var_mem_weight        Variable memory capacity weight            False
root@ABRO-DB/#

For so many archive processes this need to check with dba.
the FILESYSTEMIO_OPTIONS=SETALL is not enabled. The SGA is 40Gb
I have already raise request to increase the SGA to 80Gb as memory is of 200Gb.


Moderator's Comments:
Mod Comment Please use CODE tags correctly as required by forum rules!

Last edited by RudiC; 01-16-2017 at 05:43 AM.. Reason: Changed ICODE to CODE tags.
 

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unix_master(9r) 														   unix_master(9r)

NAME
unix_master - General: Forces execution onto the master CPU SYNOPSIS
void unix_master( void ); ARGUMENTS
None DESCRIPTION
The unix_master routine forces execution of the kernel thread onto the master CPU (also called the boot CPU). In other words, unix_master binds the kernel thread to the master CPU. To release the kernel thread from the bind to the master CPU, call the unix_release routine. You can make recursive calls to unix_master as long as you make an equal number of calls to unix_release. The unix_master routine provides another way besides the simple and complex lock routines to make a kernel module symmetric multiprocessing (SMP) safe. Although calling unix_master is not optimal for performance on an SMP CPU, it does provide third-party kernel module writers with an easy way to make their modules SMP safe without using the lock routines. NOTES
Device drivers should not directly call the unix_master and unix_release routines. One exception to this recommendation is when you want a device driver's kernel threads to run only on the master CPU. This situation occurs when your driver creates and starts its own kernel threads and you set the d_funnel member of the associated dsent structure to the value DEV_FUNNEL. In this case, each kernel thread must call unix_master once to ensure that the kernel thread runs only on the master CPU. Remember to make a corresponding call to unix_release. CAUTIONS
To avoid deadlock, do not call the unix_master routine under the following circumstances: When holding a simple lock In the driver's inter- rupt service routine RETURN VALUES
None SEE ALSO
routines: unix_release(9r) unix_master(9r)
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