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KernelTrap: Linux: O21 Interactivity Patch For 2.6

Dec 22, 2003, 07:00 (0 Talkback[s])

[ Thanks to Jeremy Andrews for this link. ]

"Con Kolivas posted interactivity patch O21 to the lkml, solving an issue with 'a non-critical corner case.' This follows O20.1 by three months, which at the time was announced as the final interactivity patch. Con explains that his interactivity work is now in maintenance mode and that this new issue was only revealed after 'extensive testing and examination.' He explains the issue:

"'It is possible for a highly interactive task (like X) to cause large latencies in tasks that are less 'niced' (eg negative nice number compared to X which should normally run at nice 0) if they are fully cpu bound. This occurs due to expiration of the cpu bound tasks...'"

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