dtrace discuss - Oct 2009 - failed to create entry probe for 'pmucmex': Not enough space

Hi,

I am looking for information on what could be causing this message.
dtrace: invalid probe specifier pid17977:oracle::entry { 
@[probename]=count(); } : failed to create entry probe for
''pmucmex'':
Not enough space


-- 
Thanks and Regards,

Ravi Swaminathan


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Hey Ravi:

You are trying to create a probe for every function in the oracle  
binary. Is this what you want to do? By default you can have up to  
250000 probes in the system. Looks like you are running out of probes.  
You can increase the probes by changing the fasttrap-max-probes  
variable in the /kernel/drv/fasttrap.conf file. Once you increase the  
value then run "update_drv fasttrap" or reboot.

If you are trying to find out the most expensive function in the   
Oracle process then a easier and less intrusive way is to use the  
profile probe. Here is a simple script that will give you relative  
numbers rather than absolute numbers. The profile probe wakes up at  
regular intervals and see what is running at that time and records the  
details.

dtrace -n profile-1001''/pid==17977/{@[ufunc(arg1)]=count()}''

You can modify the predicate to fit your need. The ufunc() action  
takes an address and provides name of function. arg1 is set to the PC  
if the current process is executing in the user land.

HTHs

Angelo



On Oct 27, 2009, at 8:54 PM, Ravi Swaminathan wrote:
> Hi,
>
> I am looking for information on what could be causing this message.
> dtrace: invalid probe specifier pid17977:oracle::entry { @[probename] 
> =count(); } : failed to create entry probe for ''pmucmex'':
Not enough
> space
>
>
>  --
> Thanks and Regards,
>
> Ravi Swaminathan
>
> _______________________________________________
> dtrace-discuss mailing list
> dtrace-discuss at opensolaris.org
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not enough space typically means you ran out of virtual memory
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