Comments on: renice command: Change the Priority of a Already Running Process http://www.cyberciti.biz/faq/howto-change-unix-linux-process-priority/ Every answer asks a more beautiful question. Sun, 21 Mar 2010 11:48:22 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Simon http://www.cyberciti.biz/faq/howto-change-unix-linux-process-priority/comment-page-1/#comment-46445 Simon Mon, 15 Mar 2010 23:57:37 +0000 http://www.cyberciti.biz/faq/howto-change-unix-linux-process-priority/#comment-46445 "to me it seems unclear what happens when entering “renice -5 ” as root – does that mean a nice value of -5 or lowering the existing nice value by 5?" Great question. I too am still confused by the usage of this command. This also seems quite strange to me... "User cannot lower the nice values of their processes after they've raised them." Why would that be? “to me it seems unclear what happens when entering “renice -5 ” as root – does that mean a nice value of -5 or lowering the existing nice value by 5?”

Great question. I too am still confused by the usage of this command. This also seems quite strange to me…

“User cannot lower the nice values of their processes after they’ve raised them.” Why would that be?

]]> By: Nudge http://www.cyberciti.biz/faq/howto-change-unix-linux-process-priority/comment-page-1/#comment-45759 Nudge Sat, 30 Jan 2010 14:11:04 +0000 http://www.cyberciti.biz/faq/howto-change-unix-linux-process-priority/#comment-45759 "2. User cannot start processes with nice values less than 20": That's not really correct. It is possible for users to go down to nice value 0, e.g. by not using the nice command when starting processes. This results in processes having *priority* 20. Prority and nice-values belong together (NI 0 => PR 20, NI 19 => PR 39, NI -20 => PR 0). According to the manual, renice can use delta values like +3 or -2 for changing nice values, but to me it seems unclear what happens when entering "renice -5 " as root - does that mean a nice value of -5 or lowering the existing nice value by 5? “2. User cannot start processes with nice values less than 20″:

That’s not really correct. It is possible for users to go down to nice value 0, e.g. by not using the nice command when starting processes. This results in processes having *priority* 20. Prority and nice-values belong together (NI 0 => PR 20, NI 19 => PR 39, NI -20 => PR 0).

According to the manual, renice can use delta values like +3 or -2 for changing nice values, but to me it seems unclear what happens when entering “renice -5 ” as root – does that mean a nice value of -5 or lowering the existing nice value by 5?

]]> By: Sarika http://www.cyberciti.biz/faq/howto-change-unix-linux-process-priority/comment-page-1/#comment-38085 Sarika Fri, 13 Jun 2008 02:37:48 +0000 http://www.cyberciti.biz/faq/howto-change-unix-linux-process-priority/#comment-38085 perfect! perfect!

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