09-03-2008
Show errors
Post the error messages you are getting.
See if your swap is over allocated? Compare it with the swap space allocation on other OSes.
Post a snapshot of the memory usage on your system using vmstat.
10 More Discussions You Might Find Interesting
1. AIX
We are planning to move to AIX 5.3 and we would like to know if someone has had any 'bad' experiences with it.
We have a 32PE p690 Regatta and currently we are running the latest AIX 5.2 with the latest patches. Has anyone any interesting points to mention when transitioning to AXI 5.3?
Is... (1 Reply)
Discussion started by: miket
1 Replies
2. AIX
Hi,
I want to print from AIX 5.3/6.1 using 'pr' preprocessing filter and 'PCL' print file type.
Steps:
1. Smitty
2. Print Spooling
3. Create a print queue(remote->Generic)
4. change the attributes for that print queue.
5. Change print file type to PCL and... (1 Reply)
Discussion started by: meeraramanathan
1 Replies
3. Shell Programming and Scripting
Hi,
I have following samp.txt file in unix.
samp.txt
01Roy2D3M000000
02Rad2D3M222222
.
.
.
.
10Mik0A2M343443
Desired Output
01Roy2A3M000000
02Rad2A3M222222
.
. (5 Replies)
Discussion started by: techmoris
5 Replies
4. Solaris
Hi all,
This is a cross-post from the Sun/Oracle forums (I would include the URL here, but the forum doesn't allow me), cos quite frankly, this forum seems to be more active...
I am maintaining an in-house Sun/Oracle x86 server (x4275) running Solaris 10 with zones for testing and development... (10 Replies)
Discussion started by: boekhold
10 Replies
5. Linux
New to the forum.
I am running CentOS release 5.3 (Final) and have run into a unique situation.
I have been able to determine that we have a swap memory leak due to an issue with an asterisk server. This specific issue takes approximately 2-3 months for enough of the swap to to be used before... (1 Reply)
Discussion started by: g0neinsane
1 Replies
6. BSD
Hello all. I need a simple way to write to a specific memory space (/dev/mem). In a bash script if possible. (I am using dd to read the changes) Thanks in advace. (0 Replies)
Discussion started by: King_Richee
0 Replies
7. Programming
Hello all. I need a simple way to write to a specific memory space (/dev/mem). In a bash script if possible. (I am using dd to read the changes) Thanks in advace. (4 Replies)
Discussion started by: King_Richee
4 Replies
8. UNIX for Dummies Questions & Answers
AIX & DB2 paging issues
Hello I needs some help on AIX & DB2 paging issues. Recently a db2 query caused paging issues which then lead to memory problems and a server restart. Is there anyway of finding out what db2 queries were causing the problem..
Thanks in advance (2 Replies)
Discussion started by: nedkao
2 Replies
9. AIX
Good Day Everyone,
Just wonder anyone has encounter AIX 6.1 Memory Performance issues ? What I have in my current scenario is we have 3 datastage servers (Segregate server and EE jobs - for those who know Datastage achitect) and 2 db servers(running HA to load balance 4 nodes partitions for... (3 Replies)
Discussion started by: ckwan
3 Replies
10. AIX
Can someone please help me understand what it is I am doing incorrectly?
I have 22 PVs (disks) assigned to a VG, the stats on the disks:
# lspv hdisk1
PHYSICAL VOLUME: hdisk1 VOLUME GROUP: vg_usr1
PV IDENTIFIER: 0000150179158027 VG IDENTIFIER ... (3 Replies)
Discussion started by: c3rb3rus
3 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)