Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: AIX memory issue
Operating Systems AIX AIX memory issue Post 302635753 by bakunin on Sunday 6th of May 2012 06:23:44 AM
Old 05-06-2012
OK, we have now some of the information my colleagues and i asked from you. We still do not know:

- what the system is built of: is it a LPAR or WPAR? If the former, which configuration do you use (capped/uncapped CPU assignments, shared/dedicated networks, which types of disks are attached and how, etc., etc.)

- what the system exactly does: which applications (and versions/releases/patch levels thereof) are running, what the expected performance should be (versus what the performance actually is - which part of the systems operation can you name that is doing slower or less than expected), how is the application used (for instance: is the database used for user interaction and therefore expected to have its maximum load during day? Or is it batch oriented and the heavy load can be expected to start every day at the exact same time? Or ...)

- how the users connect to the system: Not at all (because only application servers connect directly and the users connect to the app-server?), via a shell session (say: telnet, rlogin, ssh, etc.), via a graphical interface (CDE, X-session, ... ?), etc.


As much as i am willing to help there are two general constraints: i will help you to help yourself but i will definitely not do the work you cannot do - its simply not my job and if you want to have me working for you please hire me, i make a living from that. Right now i ask ten questions, you answer the two which require the least effort and i try to make as much as possible from incomplete data. Have a look at my first post and ask yourself which of the questions i posed there (and repeated here) you have in fact answered. Which of the theories i have developed did you comment on and tried to approve/disprove? How much have you written about your system and how much did i or, generally said: how much effort are you putting into this and how much do i? Sorry to be that blunt, but: this is not showing the right attitude.

The second thing is: what exactly is the problem? We still do not know what your SLA (service level agreement) is. The thing is: you (the metaphorical "you") agree to deliver a system which performs function X at the rate of Y. If the actual performance is less than Y you have a performance problem, otherwise not. "Tuning" is always a process, where some function X operating at the rate of some Y' is raised (or lessened) to this Y. If you reach this goal you again have no problem while if you don't you have one. The expected "rate of Y" is what is called SLA.

Example: your boss tells you to have the system do 100k transactions per second (your SLA). It does 80k/s right now, so you have to do some tuning. You change the system and it does 90k/s - goal not reached and you are not done. You change the system further and it does 105k/s - mission accomplished, go back to surfing the web.

I hope this helps.

bakunin
These 2 Users Gave Thanks to bakunin For This Post:
learnbash Scrutinizer
 

10 More Discussions You Might Find Interesting

1. Windows & DOS: Issues & Discussions

Memory Issue

Hi There, I have upgraded the DELL poweredge 2600 server memory from 2GB to 4GB. However, the memory only showed at 2GB of utilization. How to make sure that the server is full utilize of 4GB of memory. Is there the Virtual memory need to be reconfigure as this server is run on windows 2000 and... (2 Replies)
Discussion started by: vestro
2 Replies

2. Linux

Memory issue while diff !!!

Hi All Any idea? why am I having this memory issue? perforce@ixca-pforce-bak:/home/p4-demo-root$ diff checkpoint_offline ../p4-demo-root2/checkpoint.1150 diff: memory exhausted Thanks a lot C Saha (0 Replies)
Discussion started by: csaha
0 Replies

3. AIX

Shared memory issue

Hi friends.. Help to solve this issue... Is there any parameter setting to control or limit the size of the shared memory a process can attach for the below specified environment? The man pages says it can attach upto segments of size 2GB. But when our process (which also connects to... (0 Replies)
Discussion started by: sdspawankumar
0 Replies

4. Solaris

Locked memory issue

One of our project has exceeded its assigned max-memory-locked by 3 times .. The said project is using around 9 gigs as described by rss parameter in prstat -J .. and the max-project-memory parameter has been defined as 3gigs .. is it normal or we are monitoring the project memory usage in wrong... (2 Replies)
Discussion started by: fugitive
2 Replies

5. AIX

Memory consumption issue in AIX box

Hi, monitor memory usage on AIX machine on any day of the week from 3:00 PM ET to 5:00 PM ET - Povide min and max memory consumption. Determine if all of the available memory is visible to the operating system. If it is not, determine the amount of memory which may be allocated to the... (3 Replies)
Discussion started by: Rookie_newbie
3 Replies

6. SuSE

Memory utilization issue

I have parallels container running on Suse. From top command, I am not able to see, what is eating up so big amount of memory. top - 07:44:24 up 172 days, 18:52, 1 user, load average: 0.01, 0.02, 0.00 Tasks: 44 total, 1 running, 43 sleeping, 0 stopped, 0 zombie Cpu(s): 0.0%us, ... (1 Reply)
Discussion started by: solaris_1977
1 Replies

7. AIX

Memory issue

I have a server with 300Gb allocated to it. Some times I observed in topas Comp% 73 and Non comp 35% and client is also 35% and my paging is showing 92%. If my physical memory utilized only 70% then why paging is so high. And what is relation between Comp, noncomp and client? If the memory... (1 Reply)
Discussion started by: powerAIX
1 Replies

8. Red Hat

Memory Issue

I could not find what is consuming the memory, generated DSET reports and NO hardware wise memory issue. 64 GB RAM on a server yet all I could see is a very limited memory available. I am not sure if I am reading this correct or not. I have used free -t -m and cat /proc/meminfo (results below)... (3 Replies)
Discussion started by: rsheikh01
3 Replies

9. Linux

Swap memory issue

Hi, In our production box i can see the Swap space using the below command free total used free shared buffers cached Mem: 65963232 41041084 24922148 0 877160 35936292 -/+ buffers/cache: 4227632 61735600 Swap: 4192880 ... (6 Replies)
Discussion started by: ratheeshjulk
6 Replies

10. Shell Programming and Scripting

Out of memory issue in perl

I am getting a out of memory issue while executing the perl program. Per version : /opt/acc_perl/lib/site_perl/5.14.2 Read in 54973 total records Read in 54973 table records from table. Out of memory! so the job get failed due to out of memory. need to get rid of the out of memory... (3 Replies)
Discussion started by: ramkumar15
3 Replies

LEARN ABOUT REDHAT

lpsched

lpsched(1M)                                               System Administration Commands                                               lpsched(1M)

NAME

       lpsched - start the LP print service

SYNOPSIS

       lpsched [-f num_filters] [-n num_notifiers] [-p fd_limit] [-r reserved_fds]

DESCRIPTION

       The  lpsched command  starts or restarts the  LP print service.

       The  lpshut command stops the  LP print service.  Printers that are restarted using lpsched reprint (in their entirety) print requests that
       were stopped by  lpshut. See  lpshut(1M).

       It is recommended that you start  and stop the LP print service using svcadm(1M).  See NOTES.

OPTIONS

       The following options are supported:

       -f num_filters          Specifies the number of concurrent slow filters that may be run on a print server. A default value of 1 is used  if
                               none  is  specified. Depending on server configuration, a value of  1 may cause printers to remain idle while there
                               are jobs queued to them.

       -n num_notifiers        Specifies the number of concurrent notification processes that can run on a print server. A default value of  1  is
                               used when none is specified.

       -p fd_limit             Specifies  the file descriptor resource limit for the  lpsched process. A default value of  4096 is used if none is
                               specified. On extremely large and active print servers, it may be necessary to increase this value.

       -r reserved_fds         Specifies the number of file descriptors that the scheduler reserves for internal communications under heavy  load.
                               A  default  value  of   2  is  used  when none is specified. It should not be necessary to modify this value unless
                               instructed to do so when troubleshooting problems under high load.

EXIT STATUS

       The following exit values are returned:

       0               Successful completion.

       non-zero        An error occurred.

FILES

       /var/spool/lp/*         LP print queue.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWpsu                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       lp(1), svcs(1), lpstat(1), lpadmin(1M), lpmove(1M), lpshut(1M), svcadm(1M), attributes(5), smf(5)

       System Administration Guide: Basic Administration

NOTES

       The lpsched service is managed by the service management facility, smf(5), under the service identifier:

       svc:/application/print/server

       Administrative actions on this service, such as enabling, disabling, or requesting restart, can be performed  using  svcadm(1M).  The  ser-
       vice's status can be queried using the svcs(1) command.

SunOS 5.10                                                          3 Sep 2004                                                         lpsched(1M)
All times are GMT -4. The time now is 03:57 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy