Re: opcontrol sh: write error: Invalid argument

On 01/26/2015 07:28 AM, Andrew Jones wrote:
> Hi Everyone,
> 
> Recently I cross-compiled Oprofiler for MIPS.
> When  I run --start, I'm getting 'write error'.  Details are below:
> 
> # pwd
> /root
> # export OPROFILE_EVENTS_DIR=/root
> # ./opcontrol --deinit
> dump fail: daemon died during last run ?
> Detected stale lock file. Removing.
> # ./opcontrol --no-vmlinux
> # ./opcontrol --reset
> # ./opcontrol --init
> # ./opcontrol --event=CYCLES:1000:0:1:1
> # ./opcontrol --status
> Daemon not running
> Session-dir: /var/lib/oprofile
> Event 0: CYCLES:1000:0:1:1
> Separate options: none
> vmlinux file: none
> Image filter: none
> Call-graph depth: 0
> # ./opcontrol --start
> sh: write error: Invalid argument
> Using 2.6+ OProfile kernel interface.
> Using log file /var/lib/oprofile/samples/oprofiled.log
> Daemon started.
> Profiler running.
> 
> 
> Unfortunately my sh isn't giving me a line number along with that error.
> Any help would greatly appreciated.

Hi Andrew,

opcontrol is a shell script. One trick that you might do maybe try running opcontrol with the following to find out what commands are being run:

sh -x /usr/bin/opcontrol --start >& opcontrol.log

The ouptput in opcontrol.log might give a better idea where the write error occurred.

> 
> *oprofiled.log:*
> oprofiled started Tue Nov 30 00:46:05 1999
> kernel pointer size: 4
> Failed to exec opjitconv: No such file or directory
> oprofiled: open of /var/lib/oprofile/samples//current/{root}//bin/busybox/{dep}/{root}//bin/busybox/INSTRUCTIONS.100000.0.all.all.all failed: Invalid argument
> ...

Is opjitconv built and installed?  It appears that is missing you might try to build and install it.

-Will



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