11-06-2009
Memory usage
Hi.,
I want to know amount of memory used by a process inside the same process. For example, I am writing a program and I want to know the memory used by it from the program. So, I could do some actions (flush some unwanted data structures/ log the memory usage) in my program based on this value. I don't like to parse the top command's output.
I know this value will be stored in /proc directory. I've referred the /proc/<pid>/statm, status, stat files. But, I'm unable to find how top command is calculating that a process is utilizing x% of memory.
10 More Discussions You Might Find Interesting
1. Programming
how can i monitor usages of CPU, Memory, Hard disk etc. under SUN Solaries
through a c program or java program
i want to store that data into database so i can show it graphically
thanks in advance (2 Replies)
Discussion started by: Gajanad Bihani
2 Replies
2. Programming
Please tell me solaris functions/api for getting following information
1- Function that tells how much memory used by current process
2- Function that tells how much memory used by all running processes
3- Function that tells how much CPU is used by current process
4- Function that tells how... (1 Reply)
Discussion started by: mansoorulhaq
1 Replies
3. HP-UX
Refer from title:
How can i get memory used or anything that can show memory from sar file
example on solaris:-
we can use sar with option to show memory used at time that sar crontab run.
on HP-UX, it not has option to see memory used. But i think it may be have some parameter or some... (1 Reply)
Discussion started by: panithat
1 Replies
4. UNIX for Dummies Questions & Answers
Hi All,
Does anyone know what the best commands in the UNIX command line are for obtaining this info:
current CPU usage
memory usage
virtual memory usage
preferably with date and time parameters too?
thanks
ocelot (4 Replies)
Discussion started by: ocelot
4 Replies
5. HP-UX
how can I find cpu usage memory usage swap usage and
I want to know CPU usage above X% and contiue Y times and memory usage above X % and contiue Y times
my final destination is monitor process
logical volume usage above X % and number of Logical voluage above
can I not to... (3 Replies)
Discussion started by: alert0919
3 Replies
6. Solaris
Hi,
I want to monitor the current cpu usage, monitor usage , disk I/o and network utlization for solaris using SNMP.
I want the oids for above tasks.
can you please tell me that
Thank you (2 Replies)
Discussion started by: S_venkatesh
2 Replies
7. Solaris
Hi,
I'm running a multi-process software system on a Solaris 8 machine. When I monitor the memory usage, I see that the free memory is dropping rapidly, but I can't detect a process that uses this memory.
I'm using "top" to get the free memory and the memory usage of processes.
Thanks. (3 Replies)
Discussion started by: gewurtz
3 Replies
8. AIX
How to monitor the IBM AIX server for I/O usage, memory usage, CPU usage, network usage, storage usage? (3 Replies)
Discussion started by: laknar
3 Replies
9. UNIX for Dummies Questions & Answers
Hi all,
Can you please tell me the command, with which one can know the amount of space a specific directory has used.
df -k . ---> Displays, the amount of space allocated, and used for a directory.
du -k <dir name> - gives me the memory used of all the files inside <dir>
But i... (2 Replies)
Discussion started by: abhisheksunkari
2 Replies
10. UNIX for Dummies Questions & Answers
Let's say i have 20 users logged on Server. How can I know how much memory percent used each of them is using with system time in each user? (2 Replies)
Discussion started by: roy1912
2 Replies
LEARN ABOUT HPUX
vxmemstat
vxmemstat(1M) vxmemstat(1M)
NAME
vxmemstat - display memory statistics for Veritas Volume Manager
SYNOPSIS
vxmemstat [-e] [-i interval [-t count]]
DESCRIPTION
The vxmemstat utility prints memory statistics information. This information can be system-wide, or it can be specific to a Veritas Volume
Replicator object.
OPTIONS
-e Prints extended memory statistics.
-i interval
Prints memory statistics every interval seconds.
-t count Prints the local system time every count intervals. The time interval is specified using the -i interval option.
OUTPUT FORMAT
The statistics are prefaced by a timestamp showing the current local time on the system. Statistics are printed as a one-line output record
for each memory pool. The records are preceded by two header lines. The output line consists of blank-separated fields. All numeric fields
are in units of kilobytes.
The following fields are displayed on each line:
Pool Name of the memory pool. Memory consumers allocate memory from different pools for different purposes.
DG Name of the disk group in which the RVG is present.
Min Size Minimum amount of memory always reserved for use by consumers of the pool. As consumers require more memory, additional memory is
allocated to the pool for distribution to them.
Max Size Maximum amount of memory that can be allocated to the pool. This is equal to the value assigned to the maximum pool size system
tunable that corresponds to the pool.
In Use Amount of memory (out of that allocated) currently being used by consumers of the memory pool.
Allocated Amount of memory currently allocated to the memory pool. The amount of memory allocated to a pool ranges between the minimum and
the maximum pool size. The amount of allocated memory increases as more memory is needed and decreases as it is relinquished.
Max Used Maximum amount of memory used by consumers from this pool since system startup.
This field is not shown if the -e option is specified.
Max Pool Used
Maximum amount of memory used by consumers from this pool at any time since the last reboot. The value shows the maximum usage
even if usage by the pool has varied over this time period.
This field is shown if the -e option is specified.
Waiting Indicates if any I/O is waiting to allocate memory from this pool. This usually indicates that the corresponding tunable for the
maximum size of this pool needs to be increased.
This field is not shown if the -e option is specified.
Waiters The number of requests that are waiting to allocate memory from this pool.
This field is shown if the -e option is specified.
EXIT CODES
The vxmemstat utility exits with a non-zero status if the attempted operation fails. A non-zero exit code is not a complete indicator of
the problems encountered, but rather denotes the first condition that prevented further execution of the utility.
See vxintro(1M) for a list of standard exit codes.
EXAMPLES
To display statistics every 5 seconds and time stamp the output every alternate interval, use the command:
vxmemstat -i 5 -t 2
SEE ALSO
vxintro(1M), vxstat(1M)
VxVM 5.0.31.1 24 Mar 2008 vxmemstat(1M)