What jobs are running in Linux PID?
I have certain PID's that are consuming memory on my VPS server and I need to find out the jobs or applications that are part of that PID.
I have used strace -p [PID] but there are too many lines of code and they repeat themselves.
Is there a way to find out what applications/jobs are running and consuming the resources. If not, what other suggestions do you have?
I have used strace -p [PID] but there are too many lines of code and they repeat themselves.
Is there a way to find out what applications/jobs are running and consuming the resources. If not, what other suggestions do you have?
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ASKER
I know about top. I need to know the applications in the pid that top is showing consume the most resources. I know the pid I need an application/job breakdown.
Have you tried lsof? You can pull up all files associated with a PID.
http://www.thegeekstuff.com/2012/08/lsof-command-examples/
http://www.thegeekstuff.com/2012/08/lsof-command-examples/
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ASKER
Thanks for that suggestion but there are so many files listed I don't know what applications or jobs they belong to. That's why I need a list of jobs/applications per pid. Then I can determine if those jobs/applications should be running or not.
Try: pstree -p <PID>
Example:
[gerwin@localhost ~]$ pstree -p 1868
lxterminal(1868)─┬─bash(18
├─bash(15329)───top(15550)
├─gnome-pty-helpe(1869)
├─{lxterminal}(1871)
└─{lxterminal}(1878)
[gerwin@localhost ~]$
Example:
[gerwin@localhost ~]$ pstree -p 1868
lxterminal(1868)─┬─bash(18
├─bash(15329)───top(15550)
├─gnome-pty-helpe(1869)
├─{lxterminal}(1871)
└─{lxterminal}(1878)
[gerwin@localhost ~]$
ASKER
ls -l /proc/{proc id}/fd
e.g.
ls -l /proc/123/fd
When I do the above I get the following:
ls -l /proc/19678/fd
ls: cannot access /proc/19678/fd: No such file or directory
e.g.
ls -l /proc/123/fd
When I do the above I get the following:
ls -l /proc/19678/fd
ls: cannot access /proc/19678/fd: No such file or directory
That means the process is finished
Well if all you want is the job name:
ps -Af | grep PID
where "PID" is the process id.
ps -Af | grep PID
where "PID" is the process id.
ASKER
Gerwin,
I just get the hash symbol
# pstree -p 19678
#
I just get the hash symbol
# pstree -p 19678
#
Exactly which program/process is it you are trying to debug?
Then you have a non-existing PID, you should find your PID with top (sorted on memory use), then use that PID for the pstree command.
ASKER
I was trying to debug 19678 to find out the applications that are using that process.
But is it still running:
ps -Af | grep 19678
ls -l /proc/19678
If both return nothing, then the process has terminated.
ps -Af | grep 19678
ls -l /proc/19678
If both return nothing, then the process has terminated.
Well from what you posted above that process doesn't exist.
Every new process will use what every process id is available - programs don't use the same process ID every time
Every new process will use what every process id is available - programs don't use the same process ID every time
ASKER
running this command
ps -Af | grep 19678
root 28455 24704 0 16:08 pts/2 00:00:00 grep 19678
does that mean it is running. I tried to use the -r trigger to show only running processes but I must not have the syntax correct.
ps -Af | grep 19678
root 28455 24704 0 16:08 pts/2 00:00:00 grep 19678
does that mean it is running. I tried to use the -r trigger to show only running processes but I must not have the syntax correct.
it means that it is not running.
when you do a ps with a grep, unless you also add a "don't show me my grep", you'll see your request in the output.
when you do a ps with a grep, unless you also add a "don't show me my grep", you'll see your request in the output.
There is nothing using that PID, first line should be the application using the PID
ASKER
OK, then Is there a way to find out what applications/jobs are running and consuming the resources. If not, what other suggestions do you have? Since looking at the PID won't work.
You do the top command, find the program's pid and then use the ls command
When I want know what is consuming resources, I start with top.
@sharingsunshine - To speed things up a bit: show us the output of top after you've pressed >
Paste these 2 lines:
(I'm showing a firefox process using the most memory on my system)
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1912 gerwin 20 0 921960 306064 37596 R 13.2 29.8 38:34.48 firefox
Paste these 2 lines:
(I'm showing a firefox process using the most memory on my system)
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1912 gerwin 20 0 921960 306064 37596 R 13.2 29.8 38:34.48 firefox
ASKER
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
26449 apache 20 0 2106m 190m 149m S 56.3 5.1 1:51.52 /usr/sbin/httpd
26449 apache 20 0 2106m 190m 149m S 56.3 5.1 1:51.52 /usr/sbin/httpd
ASKER
but if the processes go away how can you debug them?
So are you trying to trace a php file or something?
Using the following will list all files being used by that process
ls -l /proc/26449 /fd
Using the following will list all files being used by that process
ls -l /proc/26449 /fd
ASKER
could your syntax be wrong? Because I did a grep on the pid and it exists
]# ps -Af | grep 2068
mysql 2068 1861 2 Nov07 ? 11:51:55 /usr/libexec/mysqld --basedir=/usr --datadir=/data/mysql --plugin-dir=/usr/lib64/my
root 32091 24704 0 16:39 pts/2 00:00:00 grep 2068
# ls -l /proc/2068 /fd
ls: cannot access /fd: No such file or directory
/proc/2068:
]# ps -Af | grep 2068
mysql 2068 1861 2 Nov07 ? 11:51:55 /usr/libexec/mysqld --basedir=/usr --datadir=/data/mysql --plugin-dir=/usr/lib64/my
root 32091 24704 0 16:39 pts/2 00:00:00 grep 2068
# ls -l /proc/2068 /fd
ls: cannot access /fd: No such file or directory
/proc/2068:
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ASKER
i did them back to back not sure why the timestamp didn't get copied.
Your PID is 26449 not 2068 - where do you get that from?
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Are these you're own sites on the server?
ASKER
26449 was gone and 2068 came up on top so I grabbed it as quick as I could.
yes they are my own sites
yes they are my own sites
ASKER
Thanks for all your help.
You can run the following command #ps -p
http://www.cyberciti.biz/tips/top-linux-monitoring-tools.html
http://www.cyberciti.biz/tips/top-linux-monitoring-tools.html
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That will give you the in memory processes by highest usage down