Open briandfoy opened 1 year ago
On Mon Mar 02 14:31:05 2009, ki11er_bob@yahoo.dk wrote:
"./test.pl". "./test.pl </dev/null 1>/dev/null 2>/dev/null &". Now the "top" command shows my little program eating up one full processor.
Not the "to /dev/null" is an issue, but the "from /dev/null".
It tries to read from STDIN, maybe during its filehandle hijacking. You can see the shell stopping it when you don't feed its stdin.
./test.pl 1>/dev/null 2>/dev/null &
The cpu usage in such a situation is normal, similar to a process searching for its lost tty.
The way I understand Net::SSH::Perl so far I don't think this gets resolved.
Kind regards, Steffen
This ticket was imported from rt.cpan.org 43780
Hi'
I am targeting a simple perl loop, in which I with ssh->cmd will execute a command on a remote host. This code should run in the back ground on the mother host.
The following simple code shows my observation.
Now, call the code test.pl and run "./test.pl". Command "top" running in another shell on the mother host does not show anything suspicious. Now I would like to have the code running in the background and thus I do "./test.pl </dev/null 1>/dev/null 2>/dev/null &". Now the "top" command shows my little program eating up one full processor. This puzzles me very much indeed and I am speculating, if this is a bug or a feature.
Thanks for any help in advance.
Best regards.
Thomas.