kworker/0:2 suddenly started using 55+%, so I re-booted. No joy. System is quiet. %uname -a Linux puget.mtranch.com 3.13.6-100.fc19.x86_64 #1 SMP Fri Mar 7 16:56:44 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Here's the header of the perf report, which is too large for posting. I'd be happy to answer queries, of course. # nrcpus online : 4 # nrcpus avail : 4 # cpudesc : Intel(R) Core(TM) i5-2540M CPU @ 2.60GHz # cpuid : GenuineIntel,6,42,7 # total memory : 8081384 kB # cmdline : /usr/bin/perf record -g -a sleep 10 # event : name = cycles, type = 0, config = 0x0, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, excl_host = 0, excl_guest = 1, precise_ip = 0, attr_mmap2 = 0, attr_mmap = 1, attr_mmap_data = 0 # HEADER_CPU_TOPOLOGY info available, use -I to display # HEADER_NUMA_TOPOLOGY info available, use -I to display # pmu mappings: cpu = 4, software = 1, tracepoint = 2, uncore_cbox_0 = 6, uncore_cbox_1 = 7, breakpoint = 5 # ======== # # Samples: 53K of event 'cycles' # Event count (approx.): 33660627666 # suggestions? Thanks. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org