how can i do that in a script withough havin the script halt at the section where the top command is located. am writign a script that will send me the out put of unx commands if the load average of a machine goes beyond the recommended number.
top -n 20
i want to save this output to a file... (1 Reply)
I am using the Red Hat Enterprise Linux AS release 3 (Taroon), 2.4.21-4.EL. When I see the output of the command 'top'. I am getting the following
************************************************************************************
2 processes: 227 sleeping, 5 running, 0 zombie, 0 stopped... (3 Replies)
hi,
i want to know cpu utilizatiion per process per cpu..for single processor also if multicore in linux ..to use these values in shell script to kill processes exceeding cpu utilization.ps (pcpu) command does not give exact values..top does not give persistant values..psstat,vmstat..does njot... (3 Replies)
I'm using top to view processes. But, I do not know how to scroll down the list to view what is not showed in the terminal window. Anyone know how to do this? (1 Reply)
Hi all,
I found like top command could be used to find the Memory and CPU utilization. But i want to know how to find the Memory and CPU utilization for a particular user using top command.
Thanks in advance.
Thanks,
Ananthi.U (2 Replies)
I m using following command to find top 10 cpu consuming processes.
However whenever i execute the command i get
following warning.
What can be done to avoid it?
# ps -auxf | sort -nr -k 3 | head -10
Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.7/FAQ
root ... (6 Replies)
Hi all,
Is it possible to get total memory usage and free memory usage without top? By Googling I found for total memory usage, use vmstat, for CPU, use mpstat, for disk I/O use iostat, is this correct? Will using sar gives the same result as ALL of these three (3) commands?
What about if I... (2 Replies)
ps -eo pid,comm,%cpu lists all processes (in increasing PID number).
How to get only the top-10 most CPU intensive ones? I know about top: this is BASH exercise.
I tried redirecting above code to cut ps -eo pid,comm,%cpu | cut -f2but ps' output isn't TAB delimited. How can I otherwise use... (5 Replies)
When I run 'top' command,I see the following
Memory: 32G real, 12G free, 96G swap free
Though it shows as 12G free,I am not able to account for processes that consume the rest 20G.
In my understanding some process should be consuming atleast 15-16 G but I am not able to find them.
Is... (1 Reply)
Hi All,
I am new to Scripting , please give me guidance to write the script to see top processes on the Linux operating system.
I executed this script on my Virtual Server(Linux)
DATE=`date +%Y%m%d%H%M%S`
HOME=/home/xmp/testing/xmp_report
RADIUS_PID=`xms -xmp sh pr | grep... (2 Replies)
Discussion started by: madala
2 Replies
LEARN ABOUT LINUX
malloc_trim
MALLOC_TRIM(3) Linux Programmer's Manual MALLOC_TRIM(3)NAME
malloc_trim - release free memory from the top of the heap
SYNOPSIS
#include <malloc.h>
int malloc_trim(size_t pad);
DESCRIPTION
The malloc_trim() function attempts to release free memory at the top of the heap (by calling sbrk(2) with a suitable argument).
The pad argument specifies the amount of free space to leave untrimmed at the top of the heap. If this argument is 0, only the minimum
amount of memory is maintained at the top of the heap (i.e., one page or less). A nonzero argument can be used to maintain some trailing
space at the top of the heap in order to allow future allocations to be made without having to extend the heap with sbrk(2).
RETURN VALUE
The malloc_trim() function returns 1 if memory was actually released back to the system, or 0 if it was not possible to release any memory.
ERRORS
No errors are defined.
CONFORMING TO
This function is a GNU extension.
NOTES
This function is automatically called by free(3) in certain circumstances; see the discussion of M_TOP_PAD and M_TRIM_THRESHOLD in mal-
lopt(3).
This function cannot release free memory located at places other than the top of the heap.
This function releases only memory in the main arena.
SEE ALSO sbrk(2), malloc(3), mallopt(3)Linux 2014-05-28 MALLOC_TRIM(3)