04-04-2001
9 More Discussions You Might Find Interesting
1. Programming
Hi there...
I am maitaining an archaic application which is using mmap for file transfering/routing. There are over 500 instances of the application running without any issues for almost 2 decade. Now, the problem is that the on one particular server (HP-UX 11), sometimes the mmap is failing... (4 Replies)
Discussion started by: tobsinte
4 Replies
2. UNIX for Dummies Questions & Answers
Hi All
Need to find kernel parameter values of our UNIX box.
/filesys1/tmp>uname -a
HP-UX hps1_dc B.11.11 U 9000/800 1681349356 unlimited-user license
/filesys1/CDBLprodrun/tmp>
Can anyone help me with the cmd to find kernel parameter values?
Thanks in advance. (1 Reply)
Discussion started by: mhbd
1 Replies
3. Shell Programming and Scripting
Hi all,
i have a command named "vmchange" and i must use it for thousands of data which must be changed.
For example,
vmchange -m N0001
vmchange -m N0002
vmchange -m N0003
...
...
vmchange -m N0100
How can i do that in awk or bash script?
Any help would be greatly appreciated..
... (5 Replies)
Discussion started by: oduth
5 Replies
4. 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
5. Solaris
Any native Solaris commands/scripts to check the utilization of kernel tables/limits in Solaris ? (like equivalent command in HPUX is kcusage) (2 Replies)
Discussion started by: thamurali
2 Replies
6. Shell Programming and Scripting
Can somebody help me out and provide me with a SED or AWK solution that converts TO_DATE CLAUSE -> TIMESTAMP
I need to keep the PARTION value (HISTORY_20110417) and DATE/TIME value (2011-04-18 00:00:00) the same for every line
PARTITION HISTORY_20110417 VALUES LESS THAN (TO_DATE('... (3 Replies)
Discussion started by: BeefStu
3 Replies
7. Shell Programming and Scripting
Hi all
we have a file ONE like this
12345 98765
67222 74252
76991 90091
and we have one more file TWO like
huiiii 67jjjj u988 99999 uj99j 98765
hujg 7yhh ij999 78688 ijo99 74252
Now i want create THREE file which
is like
huiiii 67jjjj u988 12345 uj99j 98765
hujg 7yhh ij999... (2 Replies)
Discussion started by: polineni
2 Replies
8. HP-UX
To fix an "issue" we're having I need to update SHMMAX from 1GB to 2Gb, it's a dynamic parameter so am just wondering how flexible it really is.
As Oracle is running on the server do I need to shut that down to change the parameter or will it just take the change on the fly?
Also how would I... (6 Replies)
Discussion started by: Turlock
6 Replies
9. Shell Programming and Scripting
I have a file which looks like this:
1 3 5 5 3 2
1 5 3 6 3 2
0 5 6 3 2 9
0 4 5 6 4 9
In the first column, instead of 1, I want to place +1 and instead of 0, I want -1 to be put. So the generated file should look like this:
+1 3 5 5 3 2
+1 5 3 6 3 2
-1 5 6 3 2 9
-1 4 5 6 4 9
Just to... (9 Replies)
Discussion started by: shoaibjameel123
9 Replies
LEARN ABOUT HPUX
allocate_fs_swapmap
allocate_fs_swapmap(5) File Formats Manual allocate_fs_swapmap(5)
NAME
allocate_fs_swapmap - determines when swapmap structures are allocated for filesystem swap
VALUES
Failsafe
Default
Allowed values
or
DESCRIPTION
The tunable is used to determine whether to allocate all needed filesystem swap structures during the initialization of the filesystem swap
device or wait until they are needed. Pre-allocation of all filesystem swap structures upon initialization saves time during later usage
of the filesystem swap, and prevents later allocation failure due to physical memory contention.
Dynamic allocation decreases the memory footprint of the filesystem swap system.
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?
Systems under heavy memory load may not be able to acquire enough memory to hold the swap mapping structures for an addition of file system
swap. These calls to add swap would fail with the error though presumably they would be retried. Frequent failure on file system swap
addition with would merit enabling this tunable.
What Are the Side Effects of Raising the Value?
All the swap map structures for each file system swap device would be preallocated during swap initialization at kernel boot, increasing
the memory footprint of the kernel. The amount of increase depends on the number and size of file system swap devices.
When Should the Value of This Tunable Be Lowered?
Systems with limited memory available to the kernel that also have limited use of file system swap devices should disable this tunable to
decrease kernel memory usage.
What Are the Side Effects of Lowering the Value?
File system swap additions may fail with when memory contention is high.
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 allocate_fs_swapmap(5)