01-21-2009
Memory Usage on Linux server
Hi ,
As I am new to Linux server, I am facing some doubts like: On linux server virtual memory usage goes to 99%, but I have Threshold limit of 95%. So it crossed the threshold limit and alarmd.
Yesterday I moniterd the server using TOP command, and found some of Tibco process was consuming much memory. Since I stopped the 4 tibco process, then the memory usage become below threshold, but again once I restarted the stopped processes, that process again consuming same memory as previos and memory usage again going to 99%.
But suddenly today morning I saw the memory usage, it is 39% only. (All same preocess are running on server with same memory consumption, I varifid.) Nothing done to server or processes running on server.
Can anyone give me some inputs on
#How come this scenario should happen??
#The tibco processes which was consuming much memory, how will be different from other tibco processes which was normal??
#What will be the cause of memory releasing automatically, as all process are running with same memory consumption??
#If same incident occured in future, then how to release memory??
Thanking you in advance..!
Thanks,
Jay
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LEARN ABOUT HPUX
services.window
services.window(4) Kernel Interfaces Manual services.window(4)
NAME
services.window - file containing applications and their associated memory window ID
DESCRIPTION
The file is used by applications using memory windows.
Each line in the file associates an application with a memory window ID. A line in the file cannot start with a space or tab. The format
is a unique name, defining the application, followed by a space/tab, followed by a unique window_id. See the sample file in
Memory windows allows for the starting of a process in a unique or existing memory window where it can create and share objects with other
applications in the same memory window.
The creation of memory windows removes the system wide restriction on shared resources. Without memory windows, 32-bit processes were lim-
ited to 1.75 gigabytes of shared resources. Each memory window allows for the definition of a unique 1 gigabyte quadrant and since multi-
ple memory windows can be defined in a system, the system total for shared resources can exceed the 1.75 gigabyte limitation for 32 bit
processes.
The definition of a memory window is only available for 32-bit processes.
The file provides a central place for memory window applications to associate their memory window IDs. In the event there are any colli-
sions, only a change in is necessary to select another memory window for the entire application. If is not used, and user applications
hard code window IDs in their startup scripts, collisions are not easily detected or easily fixed.
A memory window application uses the command getmemwindow(1M) to extract the application's window_id from the file, and then passes that ID
to the setmemwindow(1M).
Using the same window ID places applications in the same memory window.
EXAMPLES
Below is a example of a file.
AUTHOR
was developed by HP.
FILES
File containing applications' associated window ID.
SEE ALSO
getmemwindow(1M), setmemwindow(1M).
on
services.window(4)