10 More Discussions You Might Find Interesting
1. AIX
Hi All
I need your help to configure Aix to send logs to Qradar, I did all the methods that mentioned in IBM website and no use, Plz Help,,
The Logs should I receive from Aix and display in Qradar is (create user delete user changing in privileges....etc )
my skype account
khaled_ly84
... (4 Replies)
Discussion started by: khaled_ly84
4 Replies
2. AIX
I am trying to find out the information of my local desktop when i use putty to login to an AIX server.
This is what I do:
1. login to my PC
2. take a putty session to an AIX server
Can i get information of my local desktop from the AIX server ? Is there a command available ?
Thanks (8 Replies)
Discussion started by: Nagesh_1985
8 Replies
3. AIX
In our customer place somebody removed and PV from the server. I want the information like which user removed this PV.
Is there any way to get PV removal information.
When did the PV removed from the server ?
Whether AIX auding will help ?
Where i can get these information ?
Thank... (2 Replies)
Discussion started by: sunnybee
2 Replies
4. Shell Programming and Scripting
Hi, there!
a long PATH... makes the OS access the disk quite often, hence there is a lot of disk I/O
a long PATH... makes the OS compute a lot of ..., hence a high CPU load
(Edited/added later: Yes, this is not about the lenght of the env. var., but about the number of directories listed.)... (1 Reply)
Discussion started by: Jochen_Hayek
1 Replies
5. UNIX for Advanced & Expert Users
Hello,
I am doing fluid simulations using OpenFOAM. This program produces a lot of output every time step.
Producing output is surely not the most time consuming part, but I wonder whether writing output to the terminal or writing it into a file is faster.
With thousands of time steps a... (1 Reply)
Discussion started by: Chuck Morris
1 Replies
6. AIX
can some give some tips, most common security issues or and kind of advice about auditing aix system?
regards (2 Replies)
Discussion started by: bongo
2 Replies
7. AIX
Hi All,
i've a problem on a AIX server with audit config...
when i start the audit i receive this error:
root@****:/etc/security/audit > /usr/sbin/audit start
Audit start cleanup: The system call does not exist on this system.
** failed setting kernel audit objects
I don't understand... (0 Replies)
Discussion started by: Zio Bill
0 Replies
8. AIX
i have sucessfully enable the auditing on AIX with adding som onjects.
but when i go for
auditpr -v < /audit/trail
vlets say i reset audit at last dat 5 pm
auditpr -v < /audit/trail
will show up to last day 5 pm.
i have to reset audit every time to check latest logs.
please... (3 Replies)
Discussion started by: prashantjain07
3 Replies
9. AIX
I have a question relating with AIX auditing Question is can we set Auditing on a particular file in AIX for a particular application only?
Let say I have a file name "info.jar" and I have three application named APP1, APP2 & APP3 which are accessing that file so I want to know that which... (0 Replies)
Discussion started by: m_raheelahmed
0 Replies
10. AIX
Hi,
What's the best way to turn on the auditing in AIX 4.3? I'm in an environment where root password are shared with many users.
Can sudoers member be audited properly?
Thanks (1 Reply)
Discussion started by: itik
1 Replies
timeslice(5) File Formats Manual timeslice(5)
NAME
timeslice - scheduling interval in clock ticks per second
VALUES
Failsafe
Where defines the number of clock ticks per second for which the system is configured.
Default
Where is equal to
Allowed values
Any value in the range of is allowed.
A value of indicates no timeslice based scheduling preemption, and threads will continue to run until they voluntarily switch out or higher
priority threads preempt them.
Recommended values
Use the default value in normal cases. In special cases where quicker round robin scheduling is required, a value of may be used. How-
ever, a change in value may have a direct impact on system performance. Customers must evaluate performance impact in their workload envi-
ronment before changing the value on production systems.
DESCRIPTION
The tunable defines the scheduling time interval that a thread may execute on a processor before the kernel scheduler will context switch
out the thread for other same priority threads to run. When a thread starts executing on a processor, the thread is set up to run for the
number of ticks in the tunable. On every clock interrupt that a thread is found executing, the time quantum balance for the thread is
decremented, and when the balance reaches zero, the thread is context switched out.
The value controls one method of user preemption that the operating system implements. A larger value will reduce preemption of running
threads; however, there are other reasons for user preemption of threads, and the tunable has no control there.
A change in the value may have direct impact on system throughput and response times. A very small value may result in too many context
switches, and a very large value may result in the starvation of runnable threads.
Who Is Expected to Change This Tunable?
Anyone.
Restrictions on Changing
Changes to this tunable take effect at the next reboot.
When Should the Value of This Tunable Be Raised?
Since the tunable is globally applicable to all threads (except in the system, irrespective of their scheduling policies and priorities.
Any increase in value of this tunable will give equal time quantum boost to all threads.
If the system has too many context switches due to preemptions, caused by higher priority threads, you can raise the value to provide more
time for lower priority threads to execute when they get scheduled, because higher priority threads will preempt the lower priority threads
when they become runnable.
What Are the Side Effects of Raising the Value?
Raising the value of the tunable may cause starvation of some threads, as they have to wait longer for their turn to execute. This may
cause performance throughput issues.
When Should the Value of This Tunable Be Lowered?
The tunable value should be lowered if better turnaround in response time is required at the cost of additional context switches. When the
system does not have too many compute intensive applications, threads will block and preempt much more frequently without utilizing their
complete time quantum.
What Are the Side Effects of Lowering the Value?
The lowering of the tunable will result in many more context switches which will increase the time spent in SYSTEM space and less time
spent in USER space. Also, the applications that are compute intensive will suffer performance degradation.
What Other Tunable Values Should Be Changed at the Same Time?
None.
WARNINGS
All HP-UX kernel tunable parameters are release specific. This parameter may be removed or have its meaning changed in future releases of
HP-UX.
Installation of optional kernel software, from HP or other vendors, may cause changes to tunable parameter values. After installation,
some tunable parameters may no longer be at the default or recommended values. For information about the effects of installation on tun-
able values, consult the documentation for the kernel software being installed. For information about optional kernel software that was
factory installed on your system, see at
AUTHOR
was developed by HP.
Tunable Kernel Parameters timeslice(5)