01-13-2008
tuning kernel parameters
Can only root do this, or can other users too? if other users can, do they have to be given permission, and if so, is there a file or something that stores this?
Thanks.
9 More Discussions You Might Find Interesting
1. HP-UX
I want to change some kernel parameters in HP-UX11, to do with Oracle upgrade/install.
I know this is done using SAM. I am told SAM will not let you enter values outside the allowable range. Could anyone tell me if they have experienced anything different?
In Solaris, I would copy the... (2 Replies)
Discussion started by: malcqv
2 Replies
2. AIX
I swapped out 2 72 gb disk drives for 2 146 gb drives, both of which spin at 15k.
Are there any I/O parameters I should modify or can modify to get the most out of the new disks?
Thanks,
Mike M. (1 Reply)
Discussion started by: gravy26
1 Replies
3. HP-UX
I've been trying to find out the following parameters of our Unix box:
==>OS version
==> patch level
and the following kernel parameters
=>maxfiles_lim
=>maxvgs
=>nproc
=>msgmni
=>ncsize
=>nfile
Could someone help me how would I find the above(commands)?
Thanks,
Bhagat (1 Reply)
Discussion started by: bhagat.singh-j
1 Replies
4. Solaris
Hi all
Seem to have a concurrent processes issue on a server of mine. At peak times, the application vendor reckons we need to up the amount, as it is reaching its limit and preventing any more processes.
Looking in /etc/system, nothing has been set, so server is running with default... (2 Replies)
Discussion started by: sbk1972
2 Replies
5. AIX
Hello,
On Aix 5.2, we changed the parameters tcp_keepinit, tcp_keepintvl and tcp_keepidle with the no command.
tunrestore -R is present in inittab
in the directory /etc/tunables we can clearly see the inclusion of parameters during reboot, including the file lastboot.log
... (0 Replies)
Discussion started by: dantares
0 Replies
6. Solaris
Hi gurus
Could anybody tell me which file is read by kernel to set its default system kernal parameters values in solaris. Here I am not taking about /etc/system file which is used to load kernal modules or to change any default system kernal parameter value
Is it /dev/kmem file or something... (1 Reply)
Discussion started by: girish.batra
1 Replies
7. Solaris
Dear All,
I want to check whether all essential kernel parameters are installed in my Solaris 10 System. Is there any way to find it.
And also how to tune it.
Kindly help.
Thanks and Regards
Rj (8 Replies)
Discussion started by: jegaraman
8 Replies
8. UNIX for Dummies Questions & Answers
Virtual Machine running on VMWare workstation 9.2
os : RHEL 5.8
RAM : 2.5GB
Swap : 2.6gb
CPU : 1 virtual CPU
Surprizingly I couldn't find much from googling on What exactly does Kernel parameters do ?
I was under the impression that kernel parameters just set the limits/maximum for a... (2 Replies)
Discussion started by: John K
2 Replies
9. AIX
Hi,
we've a gigabit Ethernet adapter. And we wanted to improve the performance by tuning network parameters. so' as per IBM info center,
http://publib.boulder.ibm.com/infocenter/aix/v7r1/index.jsp?topic=%2Fcom.ibm.aix.prftungd%2Fdoc%2Fprftungd%2Fnetw_opt.htm
we tried changing the tuning... (2 Replies)
Discussion started by: System Admin 77
2 Replies
LEARN ABOUT SUSE
pmvarrun
pmvarrun(8) pam_mount pmvarrun(8)
Name
pmvarrun - updates /var/run/pam_mount/user
Syntax
pmvarrun -u user [options]
Description
A separate program is needed so that /var/run/pam_mount/user may be created with a pam_mount-specific security context (otherwise SELinux
policy will conflict with gdm, which also creates file in /var/run).
pmvarrun is flexible and can run in a number of different security setups:
root-root
When pmvarrun is invoked as root, /var/run/pam_mount's permission settings can be as strict as needed; usually (0755,root,root) is a good
pick as it gives users the debug control over their refcount. Refcount files are given their respective owners (chowned to the user who
logs in).
user-user
When invoked as the user who logs in, /var/run/pam_mount needs appropriate permissions to create a file, which means the write bit must be
set. It is also highly suggested to set the sticky bit in this case, so other users do not tamper with your refcount.
root-user
Some programs or login helpers incorrectly call the PAM stack in a way that the login phase is done as root and the logout phase as a nor-
mal user. Nevertheless, pmvarrun supports this, and the same permissions as in root-root can be used. While the user may not be able to
unlink his file from /var/run/pam_mount, it will be truncated to indicate the same state.
Options
--help, -h
Display help.
--user user, -u user
User to handle, must be a valid username.
--operation number, -o number
Increase volume count by number.
-d Turn on debugging.
Files
/var/run/pam_mount/user
Author
This manpage was originally written by Bastian Kleineidam <calvin@debian.org> for the Debian distribution of libpam-mount but may be used
by others.
See /usr/share/doc/packages/pam_mount/AUTHORS for the list of original authors of pam_mount.
pam_mount 2008-10-08 pmvarrun(8)