12-17-2010
10 More Discussions You Might Find Interesting
1. HP-UX
Good Day
Please couls somebody tell me how to display Configurable Kernel parameters from the command line. I am able to do it from SAM,but would like to dump the command line output to a text file so I can email it off to HP.
Kind Regards
Shawn (1 Reply)
Discussion started by: shawnbishop
1 Replies
2. UNIX for Advanced & Expert Users
Hi all,
I'm at SCO UNIXWARE 7.1.1, my system's memory is larger than dump device, I have found one kernel tunable parameter at SCO website ie SYSDUMP_SELECTIVE which tells me that if set to 1 system will dump only kernel mapped memory, but I'm not sure how to configure this parameter. As well... (2 Replies)
Discussion started by: tayyabq8
2 Replies
3. 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
4. HP-UX
Hello all, Can anyone tell me the command line I can use to look at the following Kernel parameters:
nfile
maxfile
maxfile_lim
I'm using the Reflection manager connection to my Unix box so I can't use SAM. (3 Replies)
Discussion started by: impunchdrunk
3 Replies
5. 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
6. HP-UX
Hi,
I'm new to HP-UX. i'm working on HP-UX 11.31 ia64 for testing our product
i could able to change the kernel parameter values and i need to add the following parameters to the parameters list
semmap = 258
nfile = 2048
msgseg = 7168
msgssz = 32
maxusers = 60
msgmap = 258
msgmax =... (4 Replies)
Discussion started by: jo09
4 Replies
7. 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
8. Linux
Hi,
if I install a module with specific parameter, will this parameters applied next time system boots?
for exampe, I want to disable InterruptThrottleRate
modprobe e1000e InterruptThrottleRate=0
Is this parameter apllied only for this run, or this module will always use this parameter when... (2 Replies)
Discussion started by: Shedon
2 Replies
9. Solaris
Dear All,
I have weblogic Portal Installed in the Server solaris 10.
How can i verify whether all the kernel parameters are available for this Software and also another question is
How to crosscheck a server ( Solaris 10 Sparc ) whether it has all the required kernel parameters.
... (2 Replies)
Discussion started by: jegaraman
2 Replies
10. 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
LEARN ABOUT HPUX
nfs2_nra
nfs2_nra(5) File Formats Manual nfs2_nra(5)
NAME
nfs2_nra - control the number of read-ahead operations queued by the NFS version 2 client when sequentially accessing a file
VALUES
Failsafe
Default
Allowed values
Recommended values
A warning will be issued at runtime if the tunable is set to a value greater than 16 since this is beyond the tested limit.
This is not a serious warning but just an information message for the administrator.
DESCRIPTION
controls the number of read-ahead operations that are queued by the NFS version 2 client when sequential access to a file is discovered.
These read-ahead operations increase concurrency and read throughput. Each read-ahead request is generally for 8192 bytes of file data.
Who Is Expected to Change This Tunable?
The distributed file system administrator should examine this value depending on network bandwidth and memory pressure on the client.
Restrictions on Changing
The tunable is dynamic; tuning will take effect immediately on the running system.
When Should the Value of This Tunable Be Raised?
If the network is very high bandwidth and the client and server have sufficient resources, increase this value to more effectively utilize
the available network bandwidth, the client resources, and the server resources.
What Are the Side Effects of Raising the Value?
Tuning incorrectly based on network bandwidth can cause performance problems.
When Should the Value of This Tunable Be Lowered?
In a very low bandwidth network, you might want to decrease this value so the NFS client does not overload the network.
What Are the Side Effects of Lowering the Value?
Tuning incorrectly based on network bandwidth can cause performance problems.
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 Sun Microsystems, Inc.
SEE ALSO
kctune(1M), sam(1M), gettune(2), settune(2), nfs3_nra(5), nfs4_nra(5), values(5).
Tunable Kernel Parameters nfs2_nra(5)