General :: Centos - Which Command To Use To Know How Much RAM Consumed By Each Process
Jul 10, 2011
I have tried top and PS command but i am not able to find the RAM used by each process.top command says that 240MB RAM used but the Memory shows 0% for all the processes, same with ps. i want to know which process consumes all 240MB RAM.Is there any command which / script which can sort the running process in oder of increasing RAM usage so that i can see. Also i find it very hard to read bytes and KB. Is there any to way to chnage those units to MB
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Feb 22, 2011
What would be the best way to determine memory consumed by each application running on the server?
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Sep 20, 2010
is there a way to calculate the total memory consumed by user ?
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Nov 11, 2010
I've some file with .sh extensions that runs some softwares.Now,how do I stop running that filesI know we run the command ./start_tomcat.sh to start the apache.Is there any command to stop that file/process or is it just kill the process to stop the process
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Sep 2, 2010
How to set that if user use command to display all process, then he'll see only his own processes?
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Jun 8, 2010
Resolved before asked: cat /proc/1111/status | grep PPid
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Apr 7, 2010
I got indication of zombie process via top command
Code:
Tasks: 321 total, 1 running, 319 sleeping, 0 stopped, 1 zombie
I don't have 'Z' indication on 'Status' column
How could it possible to identify this process ?
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Jun 26, 2011
I'm trying to use the 'at' command to run a file that checks ALL process running at 5:00pm and does a system load check? Any advice on where to start?
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May 20, 2011
I have created three child process from one parent. And different child has different functions. Child 2 has got function to load file called "wc" to count file1 and and its required to get their files by command line arguments. I can get the files through command line but couldn't get the files when child 2 process start.
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Sep 15, 2010
I use the system command route from a process (using the system() call). For security reasons the process does not have root privilege and for some reason I cannot use ioctl() either. I tried to set the capabilities of the process to NET_ADMIN and SYS_ADMIN but the route command still failed due to insufficient permissions.
What are the capabilities that I need to set for route to be successful?
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Sep 21, 2010
Is there any command in linux to figure out , given a process, which processor the process is running? I am interested in figuring out the CPU busy and CPU idle time of that processor.
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Feb 22, 2011
When I fork multiple processes, is there some command or c function to see the cpu number on which the processes are running?
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Apr 21, 2011
I have a script that calls other scripts/commands which may or may not spawn other process. From my understanding, when I do a ps -ef, the highest numbered process ID is supposed to be the parent ID of all the other related child processes, is this correct? In most or all circumstances, I do a ps -ef | grep <processid> of my script and anything that spawns off that process IDs I assumed are the child processes of my script. If I want to terminate my script and all other child processes, then I kill the parent ID which is the highest numbered PID and this will subsequently kill all other child process IDs, is this correct?
Now, my question is whether there is any quick way of showing what are the child processes of a parent ID instead of what am currently doing now which is visually checking which one is the parent ID and "assuming" that the highest numbered PID is the parent ID of all the other processes. Below is a sample output of running ps -ef | grep exp | grep -v grep. I assume from the output below that the parent process/ID is PID 11322, is that correct?
Code:
oracle 11154 11153 0 21:20 ? 00:00:00 /bin/sh -c (. ~oracle/.profile; /bin/ksh /usr/local/oracle/scripts/expdp_o
oracle 11155 11154 0 21:20 ? 00:00:00 /bin/sh -c (. ~oracle/.profile; /bin/ksh /usr/local/oracle/scripts/expdp_o
oracle 11190 11155 0 21:20 ? 00:00:00 /bin/ksh /usr/local/oracle/scripts/expdp_schema.ksh dev01
oracle 11322 11190 0 21:20 ? 00:00:00 expdp
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Sep 30, 2010
Is there a way to process the output of a locate command on the spot within bash. The output is 3 lines, ex:
Code:
[root@server confluence]# locate .timestamp
/opt/confluence/confluence-persistent/index/.timestamp
[code]....
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Jun 23, 2010
I'd like to start a background job using the sudo command and route its output to a file. This presents a problem because the prompt for the password doesn't work properly. It looks something like this when I try it:
Code:
Mac:server user$ sudo php crossdomain_server.php > data/crosscomain_output.txt &
[3] 30303
Mac:server user$ Password:
[3]+ Stopped sudo php crossdomain_server.php > data/crosscomain_output.txt
Mac:server user$
Basically I'm not properly prompted for the password and as soon as I type anything in my background job fails because it didn't receive the password. Is there any way to execute a sudo command by supplying the password on the same line as the command?
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Feb 1, 2010
Because of my English skills I'll try to explain this subject as best I can, thank you for understanding. Fisrt of all, I am running some program on my slackware in background (using standard method - &). I need to make a script, which allows sending command to this process on my machine from another one. Furthermore this program have to be logged out (standard output f.e. ./myprogram > log.out.txt).It might be a separate Program A which runs my Program B but it cannot be screen, because it is not working like I'd like to and it cannot be java, because it's slow and working not the best so to speak
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Jun 18, 2010
How to tell the kill command to ignore processes if that process is not alive?
For example: 3453 is an alive process but 44534 is not.
kill -9 3453 44534
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Mar 16, 2011
Unix command that allows to know which process is running on processor core?
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Feb 15, 2011
Is there any command to find out for how many Milli seconds a process is been running?s -a -o pid,etime | grep "process pid" gives the time in min:seconds. I wanted in milliseconds .
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Oct 5, 2010
The first call to "somefunction" works as expected. The function prints "endfunction" and a process in background sleeps 30 seconds. In the second call I thought it should work in the same way, but the script sleeps 30 seconds before it prints "endfunction".Does someone know the reason of this behavior? Is there another way to do a command substitution of a function that has a background process without have to waiting for that process?
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Apr 1, 2011
I write a script to read a file which is something like a pipe (or) queue , which shows the running status.In normal case, if i open this file with cat command, i have to use ctrl+c to exit this . What command shall i use to do the same inside a shell script ? I have tried ^C in my script , but it does not exit the process.
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Jul 14, 2011
I started to use linux (CentOS 5) 1 week ago. And I took lot of imformation from this forum. Is it possible to install two program at same time?
Total download size: 67 M
Is this ok [y/N]: y
Downloading Packages:
jdk-6u24-linux-i586.rpm 19% [========-] 6.0 kB/s | 13 MB 153:51 ETA
It is so boring to wait and I have to wait there is nothing to do something else just centOs text.
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Jan 25, 2010
I recently built a new server, running 64 bit Slackware 13.0 with the following specs:
MSI 785GTM-E45
AMD Phenom II X2 550
2GB DDR2
Onboard video from AMD 785G chipset
2x 80GB IDE system drives using software RAID with 2GB swap partition
I only include these because I'm not convinced my problem is not hardware related at some level. Basically, when I first start up the system, the memory usage is anywhere from 60 to 200MB. Then it starts to gradually climb until there is only 12-15MB free. This can take anywhere from a few hours to a few days.
The only thing I really use this for is to serve Samba shares and the occasional SSH login. I've set up Samba shares to be accessed by my Windows machines as well as a Mac. Initially I just explored the network if I wanted to see the share from these machines, but that was too slow and unreliable (the server would not always show up in Windows), so now I automatically mount the share as a network drive at startup (from Windows). So I don't know if this would have anything to do with the steadily increasing memory usage. These systems are not on/connected all the time, but the memory usage seems to rise anyway.
When I run top, it reports that nearly all of the physical memory has been consumed (after a while of uptime), but none of the swap space has even been touched. This is a typical output of the first several lines, sorted by swap size:
Code:
top - 07:45:48 up 2 days, 12:33, 2 users, load average: 0.00, 0.00, 0.00
Tasks: 105 total, 1 running, 104 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0%us, 0.2%sy, 0.0%ni, 99.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
[code]....
I can't be sure, but I believe the message just repeated itself before this part. MS-7549 is one of the components of the mainboard (MSI), maybe the northbridge or something (it seems to be associated with more than one model), so I thought for sure this meant a hardware problem, maybe with the storage controller or memory. But Memtest86 passes for more than a day without any errors, and I loaded Windows on one of the disks and ran it as hard as I could with prime95 and nothing so much as flinched. So I've got to think this is some kind of issue with linux and/or how it is handling my hardware configuration.
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May 28, 2010
I had no problems installing the F13 DVD, but when I chose to install it across a 160 GB and 250 GB hard drives, it happily used both of them for the system and left me 40 GB of storage to play with.... at least I think that is what happened. I kind of had the opposite in mind. I know I could have installed it on one and used the other drive for a separate storage location, but for me, it's just easier to have one big storage/system volume and not have to worry about paths and /dev/sdb/images stuff
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Aug 3, 2010
Is there any way to find out the space consumed by a particular application??
AFAIK,applications installation are distributed across various directories in Linux(man pages,executable files,etc..)and the very close i can get is to run 'whereis' command which gives me all the paths where the application's files are stored.
Do i have to manually go to each and every such paths and check their sizes??
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Mar 28, 2009
I am trying to install CentOS 5.2 on an HP rp5700 desktop unit. These units were originally sold as a Point of Sales unit I believe, but HP also markets it as a high life cycle server for SMB market.I tried to load CentOS on this unit via CD (created from downloaded ISO of course). It presents the initial CentOS banner page and waits for the obligatory "enter" to continue. It begins the boot process up to discovering the PCI stuff and just locks up, no response. I have to power down to restart.Since this does not even get to the point of installing. I am at a loss what to do next. Has anyone had a similar issue with other PCs.The boot stops at the lineACPI: PCI Root Bridge [PCI0] (0000:00)
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Jan 8, 2010
one tell me the internal working of kill command. that is how it kills a process internally or from where it picks file to continue its process.
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Jan 21, 2011
I have a high priority service that I start with sudo nice -n -10 process. This process does not need superuser rights though, except for the priority elevation. But nice requires superuser privileges to elevate priority.
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Jun 12, 2010
send the details raid configuration how to use in linux el5 and how to indentify the raid degrade process and how to rebuilt the process.
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Sep 8, 2010
Code:
#include <stdio.h>
#include <unistd.h>
#include <signal.h>
[code]....
Description of what the code does or what i intended to do:
1. Created a child process from parent process using 'fork()'
2. Sent a signal 'SIGALRM' from child process to parent process using 'sigqueue' function.
(The Third parameter of 'siqueue' function contains the message (message msg) which the child process wants to send to the parent process.'msg' is a stucture instance containing a) pid of child and b) string) 5. Print the 'msg' sent by child process inside the signal handler function 'sig_action_function' of the parent process I am getting some junk value when this line is executed
Code:
printf("%d
",msg->cpid);
I expected to get the pid of child process, which the child process sent to parent process through the signal.
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