Hi Claudia! actually my linux kernel is 2.6.27 AFAIK since kernel 2.6.23 a new scheduler is active: ----------- Citation from kernel source: sched-design-CFS.txt: the CFS scheduler has a much stronger handling of nice levels and SCHED_BATCH: both types of workloads should be isolated much more aggressively than under the vanilla scheduler. ----------- Maybe this can bee a reason for the different behavoir between kernel 2.6.18 vs 2.6.24. Anyway for my used programs this makes no different in the runtime behavior for all kernels 2.6.*. My patches works for for me in all kernel versions. Which programs causes more than 90% CPU consumption in your case? Regards Manfred -- To unsubscribe from this list: send the line "unsubscribe linux-msdos" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html