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Top Forums UNIX for Advanced & Expert Users System call failed with 127 .. after 500 times when called in loop Post 302588593 by mirni on Monday 9th of January 2012 11:44:10 AM
Old 01-09-2012
Quote:
while{
What is the while condition here? Is it while(true)?
If so, the problem may be the delay caused by execution of the script.
You call the script 500 times, but it cannot catch up; I would think the commands are being fork()-ed, which takes some time, and resources need to be allocated. The forked processes don't have the time to resolve, and more and more forks are requested. Then, as the system cannot do any more, execution fails. After some 30 loops, the system catches up executing the script and resources are freed to continue the mad race.
There is a limit to how many forks can your program do at one time. This may be the culprit.
This is just my vague idea of what's happening. I am looking forward to read some more accurate answers Smilie
 

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time(1T)						       Tcl Built-In Commands							  time(1T)

__________________________________________________________________________________________________________________________________________________

NAME
time - Time the execution of a script SYNOPSIS
time script ?count? _________________________________________________________________ DESCRIPTION
This command will call the Tcl interpreter count times to evaluate script (or once if count isn't specified). It will then return a string of the form 503 microseconds per iteration which indicates the average amount of time required per iteration, in microseconds. Time is measured in elapsed time, not CPU time. EXAMPLE
Estimate how long it takes for a simple Tcl for loop to count to a thousand: time { for {set i 0} {$i<1000} {incr i} { # empty body } } SEE ALSO
clock(1T) KEYWORDS
script, time ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWTcl | +--------------------+-----------------+ |Interface Stability | Uncommitted | +--------------------+-----------------+ NOTES
Source for Tcl is available on http://opensolaris.org. Tcl time(1T)
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