syscallbypid.d(1m) USER COMMANDS syscallbypid.d(1m)NAME
syscallbypid.d - syscalls by process ID. Uses DTrace.
SYNOPSIS
syscallbypid.d
DESCRIPTION
This reports the number of each type of system call made by PID. This is useful to identify which process is causing the most system
calls.
This is based on a script from DExplorer.
Since this uses DTrace, only users with root privileges can run this command.
EXAMPLES
This samples until Ctrl-C is hit.
# syscallbypid.d
FIELDS
PID process ID
CMD process name
SYSCALL
system call name
COUNT number of system calls made in this sample
DOCUMENTATION
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.
EXIT
syscallbypid.d will sample until Ctrl-C is hit.
AUTHOR
Brendan Gregg [Sydney, Australia]
SEE ALSO procsystime(1M), dtrace(1M), truss(1)version 1.00 Jun 28, 2005 syscallbypid.d(1m)
Check Out this Related Man Page
rwbytype.d(1m) USER COMMANDS rwbytype.d(1m)NAME
rwbytype.d - read/write bytes by vnode type. Uses DTrace.
SYNOPSIS
rwbytype.d
DESCRIPTION
This program identifies the vnode type of read/write activity - whether that is for regular files, sockets, character special devices, etc.
This is measuring at the application level, so file activity may well be cached by the system.
Since this uses DTrace, only users with root privileges can run this command.
EXAMPLES
This samples until Ctrl-C is hit.
# rwbytype.d
FIELDS
PID process ID
CMD process name
VNODE vnode type (describes I/O type)
DIR direction, Read or Write
BYTES total bytes
DOCUMENTATION
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.
EXIT
rwbytype.d will sample until Ctrl-C is hit.
AUTHOR
Brendan Gregg [Sydney, Australia]
SEE ALSO rwbypid.d(1M), rwbbypid.d(1M), dtrace(1M)version 0.70 Jan 11, 2006 rwbytype.d(1m)
Can someone point me at resources for system calls? Specifically, I am trying to make sense of what I am seeing in a truss command. Thanks! (3 Replies)
Hi All
Hope this is not going to upset you but i really need help.
I'm new to Unix (Brand New) have never worked on a unix system before in my life so please bear with me.
I'm in the process to install Freebsd but have no idea how to go ahead. The system that i have does not have any cd... (3 Replies)
Hello
I need to retrieve the content of a file in the shell script file(.sh file).
I store the Process ID of the a process in file.Only the PID is available in that file.
Inside the shell script i want to retireve the content(PID) and need to check for the existence of the Process.Basically... (5 Replies)
i have to gather some info about a process and redirect it to a1.txt file. For this i m using truss command
truss -po a1.txt $PID_Detail
where $PID_Detail= 1482944 3362976
--------------------------------------------------------------------------
Below the script:
#!/bin/ksh
for i... (6 Replies)
When I run a script with truss it is exiting with error.
Without truss the script runs fine!
How to understand it?
I have used the truss to resolve a 'magic' disappearing, but it brings own questions.
The main problem is in a backgroun script, which on one server just disapeares,... (5 Replies)
When I run a bash script in the customer system, it throws the warning and script exits
Exec '/root/sample.sh' @ hostname-- OK
(warn) /root/sample.sh: pipe error: Too many open files in system
/root/sample.sh: n + : syntax error: operand expected (error token is " ")
Exec... (5 Replies)
Dear All,
Writing a script in which I want to run a command in background and keep it running even script is finished.
I have tried like below,
`truss -p <pid> >> & /tmp/log &`
But doesnt work.. script goes running and nothing in log file. (7 Replies)
hi all, I need some help in regards of how to process just a sample from a large .txt file
I have a large file from many new lines (say above 200.000 new lines), I need a script that process just a sample of it, say 10.000 bur a random sample (taking rows from top top to the the bottom)
... (4 Replies)
I do have a friend who have this script already but lost it. Can you please help to give me a script that can capture the closed_wait on the stack and identify which process using it. I am thinking of using netstat and rmsock. (2 Replies)
Hello all, I have been searching for days for the definition of a KPREAD with no success. I am using the truss command on AIX 6.1 to trace a process that I have to prove is not functioning properly. I would like to define what a KPREAD is in the description of the problem. Any help would be greatly... (3 Replies)
Hi All,
We have a process which is running for last 2 years well and good in production. But suddenly yesterday there was issue we faced in the process.
The actual process is what it does like below.
1. Receive the files in NAS directory(N/w attached storage).
2. Trigger the... (11 Replies)
This question is asked in an interview today that I have to return output with each PID number and the count of each PID number logged today. Here is the script that I have written. Can you confirm if that would work or not. The interviewer didn't said if my answer is correct or not. Can someone... (5 Replies)
I'm getting the following output from a truss operation of a PID from an application that will not start properly, something with the writing to an archive. Here is the output:
open("arch/chkpt.arch", O_RDWR) Err#13 EACCES
open("arch/chkpt.arch", O_RDWR|O_CREAT|O_TRUNC, 0666)... (6 Replies)