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> A process has an assigned io nice level, anywhere from 0 to 20. Both of OK, I ask THE question : why not using the normal nice level, via current->static_prio ? This way, cdrecord would be RT even in IO, and nice -19 updatedb would have a minimal impact on the system. > these end values are "special" - 0 means the process is only allowed to > do io if the disk is idle, and 20 means the process io is considered So a process with ioprio == 0 can be forever starved. As it's not done this way for nice -19 tasks (unlike FreeBSD), wouldn't it be safer to give a very long deadline to ioprio == 0 requests ? Thanks for making something I have been dreaming of for a long time :) Guillaume - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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