06-15-2004
10 More Discussions You Might Find Interesting
1. Solaris
I'm posting the output from two disks on my Solaris machine. The first part is the output from using the format command and then using the verify option on each disk. The last part is the output from my df -k command. I'm trying to match the partition to the filesystem/mount point. I'm assuming... (13 Replies)
Discussion started by: gonzotonka
13 Replies
2. Solaris
moved to the Netwoking (0 Replies)
Discussion started by: gogogo
0 Replies
3. IP Networking
I have tried to analyze the log of truss shown below. I haven't found anything clear for me indicating the problem. The process is the server that accepts client connections. To establish the connection it starts the child thread then it should transfer data. In reality it gets only connection.... (1 Reply)
Discussion started by: gogogo
1 Replies
4. Solaris
Hi All,
We a critical application running on the Sun Solaris platform. But, for some reasons the process get's killed abnormally in the production environment and not sure what was causing this. I thought i would use the truss command to trace the errors.. so i used the bellow command
truss... (5 Replies)
Discussion started by: sudharma
5 Replies
5. UNIX for Dummies Questions & Answers
So, Just for practice, I wrote a simple fibonacci sequence script in bash.
(03:08:02\$ cat fib
#!/usr/bin/bash
ret ()
{
echo -ne "\n"
sleep .5
}
a=1
b=2
echo -n $a #1 A
ret
echo -n $b #2 B
ret (8 Replies)
Discussion started by: DeCoTwc
8 Replies
6. AIX
Hi guys,
Is there some way to monitor a process but previously starting truss like this?
truss ls &
ls
Thanks in advance. (1 Reply)
Discussion started by: edgarvm
1 Replies
7. Programming
Okay so I'm making a simple text based game that branches into different scenarios. By branching I mean branching off into whole different files with that part of the game in it. I got tired of working on scenario 1 so I'm working on scenario 2. As I get started and try to test it, I get an error... (1 Reply)
Discussion started by: lemonoid
1 Replies
8. BSD
Hi Experts,
I am facing one problem here which is one process always stuck in running state which causes the other similar process to sleep state . This causes my system in hanged state.
On doing cat /proc/<pid>wchan showing the "__init_begin" in the output.
Can you please help me here... (0 Replies)
Discussion started by: naveeng
0 Replies
9. UNIX for Advanced & Expert Users
Hi Experts,
I am facing one problem here which is one process always stuck in running state which causes the other similar process to sleep state . This causes my system in hanged state.
On doing cat /proc/<pid>wchan showing the "__init_begin" in the output.
Can you please help me here... (6 Replies)
Discussion started by: naveeng
6 Replies
10. Solaris
Hi all,
I am trying out Solaris 11.3
Realize the option of -p when using beadm that i can actually create another boot environment on another pool.
root@Unicorn6:~# beadm create -p mypool solaris-1
root@Unicorn6:~# beadm list -a
BE/Dataset/Snapshot Flags... (1 Reply)
Discussion started by: javanoob
1 Replies
LEARN ABOUT FREEBSD
truss
TRUSS(1) BSD General Commands Manual TRUSS(1)
NAME
truss -- trace system calls
SYNOPSIS
truss [-facedDS] [-o file] [-s strsize] -p pid
truss [-facedDS] [-o file] [-s strsize] command [args]
DESCRIPTION
The truss utility traces the system calls called by the specified process or program. Output is to the specified output file, or standard
error by default. It does this by stopping and restarting the process being monitored via ptrace(2).
The options are as follows:
-f Trace descendants of the original traced process created by fork(2), vfork(2), etc.
-a Show the argument strings that are passed in each execve(2) system call.
-c Do not display individual system calls. Instead, before exiting, print a summary containing for each system call: the total system
time used, the number of times the call was invoked, and the number of times the call returned with an error.
-e Show the environment strings that are passed in each execve(2) system call.
-d Include timestamps in the output showing the time elapsed since the trace was started.
-D Include timestamps in the output showing the time elapsed since the last recorded event.
-S Do not display information about signals received by the process. (Normally, truss displays signal as well as system call events.)
-o file
Print the output to the specified file instead of standard error.
-s strsize
Display strings using at most strsize characters. If the buffer is larger, ``...'' will be displayed at the end of the string. The
default strsize is 32.
-p pid Follow the process specified by pid instead of a new command.
command [args]
Execute command and trace the system calls of it. (The -p and command options are mutually exclusive.)
EXAMPLES
# Follow the system calls used in echoing "hello"
$ truss /bin/echo hello
# Do the same, but put the output into a file
$ truss -o /tmp/truss.out /bin/echo hello
# Follow an already-running process
$ truss -p 34
SEE ALSO
kdump(1), ktrace(1), ptrace(2)
HISTORY
The truss command was written by Sean Eric Fagan for FreeBSD. It was modeled after similar commands available for System V Release 4 and
SunOS.
BSD
May 12, 2009 BSD