Sponsored Content
Operating Systems AIX AIX understanding memory using Post 303039589 by zxmaus on Thursday 10th of October 2019 01:23:19 AM
Old 10-10-2019
well I would like to add that you need to make sure that you always always need to have enough real free memory to support the IOs your system needs to do. If you dont, your system will stop ALL work and starts scanning and freeing up memory pages until there is sufficient free memory available and than restarts processing. If you are very low in free memory and your system had to do this frequently on a box with lots of IO, like a DB box, this is much worse for your performance than if you would run from paging space and it can grind a busy box to a complete halt - a fact that IBM support to this day prefers to completely ignore.
These 3 Users Gave Thanks to zxmaus For This Post:
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

checking memory in AIX

I am using AIX 5.5 I have researched your site and found a few commands to try to check how much physical memory I have but the ones I found are not working. I was wondering does my system have a different command? I also checked the MAN pages could not find it there. Could somebody help? I... (2 Replies)
Discussion started by: rocker40
2 Replies

2. UNIX for Dummies Questions & Answers

understanding basic of storage in aix

Hi Can some one help to understand the follwoing thing: what is a simple mounting? for examle what the following lines says /dev/hd2 /usr/xxx if I have to install a software in a remote server, how i can use local cdrom to read the installation files from? what about... (3 Replies)
Discussion started by: ajaya
3 Replies

3. UNIX for Advanced & Expert Users

memory size under AIX

Hi, how to know size of physical memory under AIX ? Many thanks. PS : man -k memory man : 0703-310 Fichier man introuvable. uname -a AIX server1 1 5 005202DF4C00 (3 Replies)
Discussion started by: big123456
3 Replies

4. AIX

AIX Memory used by an Application

Hi, Is there any way to find the Memory allocated to an Application in AIX server (2 Replies)
Discussion started by: tinivt
2 Replies

5. UNIX for Advanced & Expert Users

HP vs AIX Memory

I have 2 boxes one running AIX 5.3 and the other running HP 11.31. Both systems have the same application running but HP seems to be using more memory than AIX by almost double. I have to use 2 different methods because both machines have different backend software to look at memory. What is the... (2 Replies)
Discussion started by: kfdalton
2 Replies

6. UNIX for Dummies Questions & Answers

Help in understanding AIX

Dear ALL, Where can I get the following information? what will happen exactly when i hit CTRL+C, CTRL+Z, CTRL+X, CTRL+D etc when the AIX terminal hangs...? The reason why I am asking this question is when ever I type a command at the terminal (say "select * from tab" or any command) the... (1 Reply)
Discussion started by: tenderfoot
1 Replies

7. Solaris

Understanding memory config with prtdiag -v

Hi. I have 2 SunFire V490 servers running Solaris 10. We may have to upgrade with more memory on one of them to make it compatible with the other. Here's the one with 12GB of RAM: Memory size: 12288 Megabytes ========================= CPUs =============================================== ... (1 Reply)
Discussion started by: th1amigo
1 Replies

8. UNIX for Advanced & Expert Users

Help understanding differences between AIX and RHEL

I have started a new job which requires AIX admin skills, which I have, and RHEL skills. Does anyone have a cheat sheet that if I know how to solve the problem in AIX how would I do that in RHEL? I was an IBM pre-sales technical trying to keep sales guys honest - not possible. Any other links to... (5 Replies)
Discussion started by: SpenceSnyder
5 Replies

9. AIX

AIX 6.1 memory tuning

Greetings, i'm wondering if there is a way to determine minimum memory requirement for AIX kernel and OS functions? We use memdetails script from perfpmr package to see actual memory allocation, for example like this: ===========================================================================... (5 Replies)
Discussion started by: dzodzo
5 Replies

10. AIX

AIX 6.1 error out of memory

i am facing issue in AIX 6.1 when i was running below command i face issued as show attached screenshot cat /audit/bin1 /audit/bin2 /audit/trail | auditpr -t 0 -v -h l,r,R,t,c,p,P |\ awk '/\s*audit object write event detected/ {print ll $6} { ll = $0}' Please use code tags next time... (1 Reply)
Discussion started by: aforabad
1 Replies
mapiconcepts(3) 						MAPIClientLibraries						   mapiconcepts(3)

NAME
mapiconcepts - MAPI Concepts MAPI objects Almost any MAPI data you access, read or edit is associated with an object. No matter whether you intend to browse mailbox hierarchy, open folders, create tables or access items (messages, appointments, contacts, tasks, notes), you will have to initialize and use MAPI objects: object understanding and manipulation is fundamental. o When developing MAPI clients with Microsoft framework, instantiated objects inherit from parent classes. As a matter of fact, developers know which methods they can apply to objects and we suppose it makes their life easier. o In OpenChange, objects are opaque. They are generic data structures which content is set and accessed through MAPI public functions. Therefore, Linux MAPI developers must know what they are doing. An example of MAPI object manipulation is shown below: mapi_object obj_store; [...] mapi_object_init(&obj_store); retval = OpenMsgStore(&obj_store); if (retval != MAPI_E_SUCCESS) { mapi_errstr('OpenMsgStore', GetLastError()); exit (1); } mapi_object_release(&obj_store); MAPI Handles Beyond memory management considerations, understanding MAPI handles role in object manipulation provides a better understanding why mapi_object_release() matters. Handles are temporary identifiers returned by Exchange when you access or create objects on the server. They are used to make reference to a particular object all along its session lifetime. They are stored in unsigned integers, are unique for each object but temporary along MAPI session. Handles are the only links between objects accessed on the client side and efficiently stored on the server side. Although OpenChange MAPI makes handles manipulation transparent for developers, mapi_object_release() frees both the allocated memory for the object on client side, but also releases the object on the server. Version 1.0 Sat Jun 14 2014 mapiconcepts(3)
All times are GMT -4. The time now is 01:00 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy