ALWAYS run commands with low priority on unix?












3















I am not asking how to nice and renice a command on UNIX.



What happens is that on a particular machine into which I frequently log I am only allowed to run long-running processes with low priority (nice 19). Is there a way for all my commands on this machine to run as if I had "niced 19" them?



Inevitably I forget to prefix the command with "nice 19" when I start it, then need to go muck around in ps/top to locate the pid of my resource-hogging process and then renice it. Too much trouble, and I risk annoying the sysadmin; is there a way to do this by default?



many thanks!
~l










share|improve this question













migrated from stackoverflow.com Jul 21 '10 at 0:35


This question came from our site for professional and enthusiast programmers.














  • 2





    It sounds like this is a sysadmin type question, about using an operating system rather than programming. It may be better suited for superuser.com.

    – JAL
    Jul 21 '10 at 0:31
















3















I am not asking how to nice and renice a command on UNIX.



What happens is that on a particular machine into which I frequently log I am only allowed to run long-running processes with low priority (nice 19). Is there a way for all my commands on this machine to run as if I had "niced 19" them?



Inevitably I forget to prefix the command with "nice 19" when I start it, then need to go muck around in ps/top to locate the pid of my resource-hogging process and then renice it. Too much trouble, and I risk annoying the sysadmin; is there a way to do this by default?



many thanks!
~l










share|improve this question













migrated from stackoverflow.com Jul 21 '10 at 0:35


This question came from our site for professional and enthusiast programmers.














  • 2





    It sounds like this is a sysadmin type question, about using an operating system rather than programming. It may be better suited for superuser.com.

    – JAL
    Jul 21 '10 at 0:31














3












3








3








I am not asking how to nice and renice a command on UNIX.



What happens is that on a particular machine into which I frequently log I am only allowed to run long-running processes with low priority (nice 19). Is there a way for all my commands on this machine to run as if I had "niced 19" them?



Inevitably I forget to prefix the command with "nice 19" when I start it, then need to go muck around in ps/top to locate the pid of my resource-hogging process and then renice it. Too much trouble, and I risk annoying the sysadmin; is there a way to do this by default?



many thanks!
~l










share|improve this question














I am not asking how to nice and renice a command on UNIX.



What happens is that on a particular machine into which I frequently log I am only allowed to run long-running processes with low priority (nice 19). Is there a way for all my commands on this machine to run as if I had "niced 19" them?



Inevitably I forget to prefix the command with "nice 19" when I start it, then need to go muck around in ps/top to locate the pid of my resource-hogging process and then renice it. Too much trouble, and I risk annoying the sysadmin; is there a way to do this by default?



many thanks!
~l







unix scheduling priority nice






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Jul 21 '10 at 0:29









laramichaelslaramichaels

3991512




3991512




migrated from stackoverflow.com Jul 21 '10 at 0:35


This question came from our site for professional and enthusiast programmers.









migrated from stackoverflow.com Jul 21 '10 at 0:35


This question came from our site for professional and enthusiast programmers.










  • 2





    It sounds like this is a sysadmin type question, about using an operating system rather than programming. It may be better suited for superuser.com.

    – JAL
    Jul 21 '10 at 0:31














  • 2





    It sounds like this is a sysadmin type question, about using an operating system rather than programming. It may be better suited for superuser.com.

    – JAL
    Jul 21 '10 at 0:31








2




2





It sounds like this is a sysadmin type question, about using an operating system rather than programming. It may be better suited for superuser.com.

– JAL
Jul 21 '10 at 0:31





It sounds like this is a sysadmin type question, about using an operating system rather than programming. It may be better suited for superuser.com.

– JAL
Jul 21 '10 at 0:31










4 Answers
4






active

oldest

votes


















3














Assuming Bash, if your system supports this feature, place this in your ~/.bashrc or ~/.profile:



ulimit -e 19


You can try it from a command line first as a test.






share|improve this answer































    2














    You might ask your sysadmin to look into adjusting limits.conf, a configuration file that is part of PAM and is located (on my Ubuntu system) in /etc/security.



    A line like



    @users hard priority 19


    sets the default 'niceness' for processes started by user accounts.






    share|improve this answer































      0














      This answer assumes your shell is bash.



      Rather than mucking about in ps or top, just suspend the process(es) with Ctrl-z if they weren't launched that way (via &), and then run jobs -l to get a pid, renice that pid, and then continue the job's execution via bg (for BackGround) or fg (ForeGround).






      share|improve this answer































        0














        Have you tried verynice? It's a bit old but still seems to be a program that might be excellent for your needs.



        Update 2019-02-06: link updated.






        share|improve this answer


























        • Linky no worky no more. What was verynice?

          – Jé Queue
          Feb 6 at 16:27






        • 1





          Oh wow, 2010 called, it wanted its answer back. Link updated. :)

          – Janne Pikkarainen
          Feb 6 at 17:01













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        4 Answers
        4






        active

        oldest

        votes








        4 Answers
        4






        active

        oldest

        votes









        active

        oldest

        votes






        active

        oldest

        votes









        3














        Assuming Bash, if your system supports this feature, place this in your ~/.bashrc or ~/.profile:



        ulimit -e 19


        You can try it from a command line first as a test.






        share|improve this answer




























          3














          Assuming Bash, if your system supports this feature, place this in your ~/.bashrc or ~/.profile:



          ulimit -e 19


          You can try it from a command line first as a test.






          share|improve this answer


























            3












            3








            3







            Assuming Bash, if your system supports this feature, place this in your ~/.bashrc or ~/.profile:



            ulimit -e 19


            You can try it from a command line first as a test.






            share|improve this answer













            Assuming Bash, if your system supports this feature, place this in your ~/.bashrc or ~/.profile:



            ulimit -e 19


            You can try it from a command line first as a test.







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered Jul 21 '10 at 4:23









            Dennis WilliamsonDennis Williamson

            77.5k14130167




            77.5k14130167

























                2














                You might ask your sysadmin to look into adjusting limits.conf, a configuration file that is part of PAM and is located (on my Ubuntu system) in /etc/security.



                A line like



                @users hard priority 19


                sets the default 'niceness' for processes started by user accounts.






                share|improve this answer




























                  2














                  You might ask your sysadmin to look into adjusting limits.conf, a configuration file that is part of PAM and is located (on my Ubuntu system) in /etc/security.



                  A line like



                  @users hard priority 19


                  sets the default 'niceness' for processes started by user accounts.






                  share|improve this answer


























                    2












                    2








                    2







                    You might ask your sysadmin to look into adjusting limits.conf, a configuration file that is part of PAM and is located (on my Ubuntu system) in /etc/security.



                    A line like



                    @users hard priority 19


                    sets the default 'niceness' for processes started by user accounts.






                    share|improve this answer













                    You might ask your sysadmin to look into adjusting limits.conf, a configuration file that is part of PAM and is located (on my Ubuntu system) in /etc/security.



                    A line like



                    @users hard priority 19


                    sets the default 'niceness' for processes started by user accounts.







                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered Jul 21 '10 at 0:36









                    JALJAL

                    1213




                    1213























                        0














                        This answer assumes your shell is bash.



                        Rather than mucking about in ps or top, just suspend the process(es) with Ctrl-z if they weren't launched that way (via &), and then run jobs -l to get a pid, renice that pid, and then continue the job's execution via bg (for BackGround) or fg (ForeGround).






                        share|improve this answer




























                          0














                          This answer assumes your shell is bash.



                          Rather than mucking about in ps or top, just suspend the process(es) with Ctrl-z if they weren't launched that way (via &), and then run jobs -l to get a pid, renice that pid, and then continue the job's execution via bg (for BackGround) or fg (ForeGround).






                          share|improve this answer


























                            0












                            0








                            0







                            This answer assumes your shell is bash.



                            Rather than mucking about in ps or top, just suspend the process(es) with Ctrl-z if they weren't launched that way (via &), and then run jobs -l to get a pid, renice that pid, and then continue the job's execution via bg (for BackGround) or fg (ForeGround).






                            share|improve this answer













                            This answer assumes your shell is bash.



                            Rather than mucking about in ps or top, just suspend the process(es) with Ctrl-z if they weren't launched that way (via &), and then run jobs -l to get a pid, renice that pid, and then continue the job's execution via bg (for BackGround) or fg (ForeGround).







                            share|improve this answer












                            share|improve this answer



                            share|improve this answer










                            answered Jul 21 '10 at 0:44









                            Phil MillerPhil Miller

                            1013




                            1013























                                0














                                Have you tried verynice? It's a bit old but still seems to be a program that might be excellent for your needs.



                                Update 2019-02-06: link updated.






                                share|improve this answer


























                                • Linky no worky no more. What was verynice?

                                  – Jé Queue
                                  Feb 6 at 16:27






                                • 1





                                  Oh wow, 2010 called, it wanted its answer back. Link updated. :)

                                  – Janne Pikkarainen
                                  Feb 6 at 17:01


















                                0














                                Have you tried verynice? It's a bit old but still seems to be a program that might be excellent for your needs.



                                Update 2019-02-06: link updated.






                                share|improve this answer


























                                • Linky no worky no more. What was verynice?

                                  – Jé Queue
                                  Feb 6 at 16:27






                                • 1





                                  Oh wow, 2010 called, it wanted its answer back. Link updated. :)

                                  – Janne Pikkarainen
                                  Feb 6 at 17:01
















                                0












                                0








                                0







                                Have you tried verynice? It's a bit old but still seems to be a program that might be excellent for your needs.



                                Update 2019-02-06: link updated.






                                share|improve this answer















                                Have you tried verynice? It's a bit old but still seems to be a program that might be excellent for your needs.



                                Update 2019-02-06: link updated.







                                share|improve this answer














                                share|improve this answer



                                share|improve this answer








                                edited Feb 6 at 17:02

























                                answered Jul 29 '10 at 8:58









                                Janne PikkarainenJanne Pikkarainen

                                6,2892329




                                6,2892329













                                • Linky no worky no more. What was verynice?

                                  – Jé Queue
                                  Feb 6 at 16:27






                                • 1





                                  Oh wow, 2010 called, it wanted its answer back. Link updated. :)

                                  – Janne Pikkarainen
                                  Feb 6 at 17:01





















                                • Linky no worky no more. What was verynice?

                                  – Jé Queue
                                  Feb 6 at 16:27






                                • 1





                                  Oh wow, 2010 called, it wanted its answer back. Link updated. :)

                                  – Janne Pikkarainen
                                  Feb 6 at 17:01



















                                Linky no worky no more. What was verynice?

                                – Jé Queue
                                Feb 6 at 16:27





                                Linky no worky no more. What was verynice?

                                – Jé Queue
                                Feb 6 at 16:27




                                1




                                1





                                Oh wow, 2010 called, it wanted its answer back. Link updated. :)

                                – Janne Pikkarainen
                                Feb 6 at 17:01







                                Oh wow, 2010 called, it wanted its answer back. Link updated. :)

                                – Janne Pikkarainen
                                Feb 6 at 17:01




















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