On 08/10/2010 06:13 AM, Matthew J. Roth wrote: > JD wrote: >> To do that, you need a library interface or sysctl command line >> that would "affine" the process and it's threads to >> to a set of cpu's (I am not certain if there is granularity here >> as far as selecting a subset of cores from a cpu). > JD and Michael, > > Take a look at taskset: > > taskset is used to set or retrieve the CPU affinity of a running > process given its PID or to launch a new COMMAND with a given CPU > affinity. CPU affinity is a scheduler property that "bonds" a > process to a given set of CPUs on the system. The Linux scheduler > will honor the given CPU affinity and the process will not run on > any other CPUs. > > Regards, > > Matthew Roth > InterMedia Marketing Solutions > Software Engineer and Systems Developer Thank you Matt! I am glad Linux has kept up with this area which is becoming more and more important as cpu's multiply their cores. Perhaps there will be a refinement that will allow the setting of core affinity as well. AMD released the 8-core cpu in 2009 http://www.google.com/url?sa=t&source=web&cd=1&ved=0CB4QFjAA&url=http%3A%2F%2Fwww.guru3d.com%2Fnews%2Famd-unleashes-hydra-8-core-cpu-in-2009%2F&ei=DnhhTKCRCZH0swPX4K3NCA&usg=AFQjCNEatbZxHgmbm1a300qyI-TP6Giupw 16 core cpu's are on the horizon, if not already in production. So I hope the affinity code will be refined to allow selecting a set of cores as well. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
