DTRUSS(1) BSD General Commands Manual DTRUSS(1)NAME
dtruss -- Trace system calls and userland stacks using DTrace
dtruss [-acdefholLs] [-t syscall] [-n name -p pid command]
The dtruss utility traces system calls and (optionally) userland stack traces for the specified programs.
The following options are available:
-p pid Trace the process with PID pid.
Trace the process with name name.
Trace the specified syscall only.
-a Print all details.
-c Print syscall counts.
-d Print relative times (in microseconds).
-e Print elapsed times (in microseconds).
-f Follow the children processes.
-l Force printing PID / TID.
-o Print time spent on CPU.
-s Print userland stack backtraces.
-L Don't print PID / TID.
Specify the DTrace buffer size.
The dtruss utility exits 0 on success, and >0 if an error occurs.
SEE ALSO dtrace(1)HISTORY
The dtruss utility comes from the DTraceToolkit and was first imported into FreeBSD 9.0.
BSD August 26, 2010 BSD
Check Out this Related Man Page
procsystime(1m) USER COMMANDS procsystime(1m)NAME
procsystime - analyse system call times. Uses DTrace.
procsystime [-acehoT] [ -p PID | -n name | command ]
procsystime prints details on system call times for processes, both the elapsed times and on-cpu times can be printed.
The elapsed times are interesting, to help identify syscalls that take some time to complete (during which the process may have slept). CPU
time helps us identify syscalls that are consuming CPU cycles to run.
Since this uses DTrace, only users with root privileges can run this command.
OPTIONS -a print all data
-c print syscall counts
-e print elapsed times, ns
-o print CPU times, ns
-T print totals
-p PID examine this PID
examine processes which have this name
Print elapsed times for PID 1871,
# procsystime -p 1871
Print elapsed times for processes called "tar",
# procsystime -n tar
Print CPU times for "tar" processes,
# procsystime -on tar
Print syscall counts for "tar" processes,
# procsystime -cn tar
Print elapsed and CPU times for "tar" processes,
# procsystime -eon tar
print all details for "bash" processes,
# procsystime -aTn bash
run and print details for "df -h",
# procsystime df -h
System call name
Total time, nanoseconds
COUNT Number of occurrences
See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
bose descriptions explaining the output.
procsystime will sample until Ctrl-C is hit.
Brendan Gregg [Sydney, Australia]
SEE ALSO dtruss(1M), dtrace(1M), truss(1)version 1.00 Sep 22, 2005 procsystime(1m)
This question might seem to be a little naive but here it goes:
I want to know the PID of a script that is running in the background.
eg: There is a script called Data_Downloader.sh
I am using the command:
ps -ef | grep Data_Downloader.sh
But I am getting the output as
wrkarea... (9 Replies)
I'm using CentOS 5.2 with KDE.
Is it possible to get a processname/cmd of a terminated process (= PID not present with PS-command) ?
Are the processnames/scriptnames logged somewhere? (I did not find them in /var/log/messages) (5 Replies)
On a AIX 18.104.22.168 server, we have PID exceeding 999999. This cause some troubles in our programms.
I would like to know the process creation rules on aix :
- what is the maximum pid number ?
- what is the wrap limit on aix, and where to find it, how to configure pid wrap limit ?
-... (3 Replies)
I have a file containing info like
I need to show only lines containing
... (11 Replies)
A quick one, I abstract the last line from a file which hasa string PID in itie.
grep PID ~/bug_tool.log | tail -1
PID : 25803 TID : 47983424956736PROC : db2sysc 1
but any ideas on the best way to grab only the string 25803
Thanks (7 Replies)
If a Solaris process is calling some syscall, and right now execution is inside syscall doing only CPU work, for example the inside simplest times syscall,
<< we are here now, we have entered in the times, but not exited yet
<- app_func... (9 Replies)
Can anyone explain the below script which is used to extract the PID?
Why they are taking from 10 character and getting the sub string?
Note:variable pid has been assigned the PID value initially as below.
pid=`sed 's@FILNAME@'$destFil'@g' $scriptname |sed 's@SRCFILE@'$sourceFil'@g' |sed... (2 Replies)
I am facing difficulty in getting the PID value & then assigning it to a variable,
kindly help me in resolving the issue.
Thanks a lot in advance.
The custom utility used inside the Test2.sh will process the file in a batch of 10 lines at once and for efficient memory management,... (3 Replies)
i want to track a process using its PID in SOLARIS.
i have a code in C++ , which memory is increasing steeply increasing every 20 days, from the code i couldn't see any memory leak.
is there any way in UNIX where with the help of PID i can trace the Process usage evry hour.
... (3 Replies)
I can find a single PID and copy it to a variable (thanks to the forum), but I have a slightly tougher situation:
When a user logs into our system, it creates 5 processes
root 21160 3096 0 07:16 ? 00:00:00 sshd: cs113
cs113 21164 21160 0 07:16 ? 00:00:00... (3 Replies)
A process completed already and I have the PID. I want to know the which command used for this PID. 'ps' command and '/proc' folder having the list current process only. Is there a way to search completed process PID?
Manimuthu (5 Replies)
I'm getting a list like the following and I'd like to kill each PID in turn.
... (3 Replies)