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Full Discussion: Memory Usage on Linux server
Operating Systems Linux Memory Usage on Linux server Post 302278909 by Corona688 on Wednesday 21st of January 2009 12:43:52 PM
Old 01-21-2009
Quote:
Originally Posted by Jaywantmm
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??
because tibco decides for whatever reason to consume vast amounts of memory. linux doesn't control how much memory tibco wants, tibco does.
Quote:
#The tibco processes which was consuming much memory, how will be different from other tibco processes which was normal??
again, that's a tibco thing, not a linux thing.
Quote:
#What will be the cause of memory releasing automatically, as all process are running with same memory consumption??
something in tibco. linux doesn't decide if tibco will hog memory, tibco does.
Quote:
#If same incident occured in future, then how to release memory??
unless the tibco people give you a better answer, restart the tibco program. (not just halt then resume.)
 

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FOOTPRINT(1)						    BSD General Commands Manual 					      FOOTPRINT(1)

NAME
footprint -- gathers memory information about one or more processes SYNOPSIS
footprint [-j path] [-f bytes|formatted|pages] [-p name|pid] [-x name|pid] [-t] [-s] [-v] [-y] [-w] [--swapped] [--wired] [-a] process-name | pid | memgraph [...] footprint -h, --help DESCRIPTION
The footprint utility gathers and displays memory consumption information for the specified processes or memory graph files. footprint will display all addressable memory used by the specified processes, but it emphasizes memory considered 'dirty' by the kernel for purposes of accounting. If multiple processes are specified, footprint will de-duplicate multiply mapped objects and will display shared objects separately from private ones. footprint must be run as root when inspecting processes that are not owned by the current user. OPTIONS
-a, --all target all processes (will take much longer) -j, --json path also save a JSON representation of the data to the specified path -f, --format bytes|formatted|pages textual output should be formatted in bytes, pages, or human-readable formatted (default) -p, --proc name target the given process by name (can be used multiple times) -p, --pid pid target the given process by pid (can be used multiple times) -x, --exclude name/pid exclude the given process by name or pid (can be used multiple times) often used with --all to exclude some processes from analysis -t, --targetChildren in addition to the supplied processes, target their children, grandchildren, etc. -s, --skip skip processes that are dirty tracked and have no outstanding XPC transactions (i.e., are "clean") -v display vmmap-like output of address space layout -y, --summary print only regions with dirty memory, and condense __TEXT, __DATA, and __LINKEDIT regions into 'Other' subtotal -w, --wide show wide output with all columns (implies --swapped --wired) --swapped show swapped/compressed column, a subset of 'dirty' --wired show wired memory column, a subset of 'dirty' -h, --help display help and exit SAMPLE USAGE
footprint Mail WindowServer OS X
January 29, 2018 OS X
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